C#实现批量给图片添加水印的示例代码

目录

• 实践过程
• 效果
• 代码

实践过程

效果

代码

  public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


        #region 获取系统字体

        private void GetSystemFont(ToolStripComboBox cb)
        {
            InstalledFontCollection myFont = new InstalledFontCollection();
            foreach (FontFamily ff in myFont.Families)
            {
                cb.Items.Add(ff.Name);
            }

            cb.SelectedItem = "宋体";
        }

        #endregion

        private void Form1_Load(object sender, EventArgs e)
        {
            cbbPosition.SelectedIndex = 0;
        }

        string[] ImgArray = null;
        string ImgDirectoryPath = null;

        private void btnLoadImg_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                lbImgList.Items.Clear();
                ImgArray = openFileDialog1.FileNames;
                string ImgP = ImgArray[0].ToString();
                ImgP = ImgP.Remove(ImgP.LastIndexOf("\\"));
                ImgDirectoryPath = ImgP;
                for (int i = 0; i < ImgArray.Length; i++)
                {
                    string ImgPath = ImgArray[i].ToString();
                    string ImgName = ImgPath.Substring(ImgPath.LastIndexOf("\\") + 1,
                        ImgPath.Length - ImgPath.LastIndexOf("\\") - 1);
                    lbImgList.Items.Add(ImgName);
                }

                tsslStatus.Text = "图片总数：" + lbImgList.Items.Count;
            }
        }

        private void lbImgList_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (lbImgList.SelectedItems.Count > 0)
            {
                tsslText.Text = "图片位置：" + ImgDirectoryPath + "\\" + lbImgList.SelectedItems[0].ToString();
            }
        }

        private void btnPreview_Click(object sender, EventArgs e)
        {
            if (lbImgList.Items.Count > 0)
            {
                if (rbTxt.Checked)
                {
                    if (txtWaterMarkFont.Text != "" && txtSavaPath.Text.Trim() != "")
                    {
                        AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[0].ToString(), 0);
                        Form2 frm2 = new Form2();
                        frm2.ig = BigBt;
                        frm2.ShowDialog();
                    }
                }
                else
                {
                    if (txtWaterMarkImg.Text != "" && txtSavaPath.Text != "")
                    {
                        ChangeAlpha();
                        AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[0].ToString(), 2);
                        Form2 frm2 = new Form2();
                        frm2.ig = BigBt;
                        frm2.ShowDialog();
                    }
                }
            }
        }

        private void trackBar1_Enter(object sender, EventArgs e)
        {
            lbImgList.Focus();
        }

        private void btnSelect_Click(object sender, EventArgs e)
        {
            if (openFileDialog2.ShowDialog() == DialogResult.OK)
            {
                txtWaterMarkImg.Text = openFileDialog2.FileName;
                if (rbPIC.Checked == true)
                {
                    ChangeAlpha();
                    pbImgPreview.Image = Image.FromFile(txtWaterMarkImg.Text.Trim());
                }
            }
        }

        private void rbTxt_CheckedChanged(object sender, EventArgs e)
        {
            trackBar1.Enabled = false;
            if (rbPIC.Checked)
                pbImgPreview.Image = null;
        }

        private void rbPIC_CheckedChanged(object sender, EventArgs e)
        {
            trackBar1.Enabled = true;
            if (rbTxt.Checked)
            {
                pbImgPreview.Image = null;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (lbImgList.Items.Count > 0)
            {
                fontDialog1.ShowColor = true;
                fontDialog1.ShowHelp = false;
                fontDialog1.ShowApply = false;
                if (fontDialog1.ShowDialog() == DialogResult.OK)
                {
                    FontF = fontDialog1.Font.FontFamily;
                    fontColor = fontDialog1.Color;
                    fontSize = fontDialog1.Font.Size;
                    fontStyle = fontDialog1.Font.Style;
                    AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[0].ToString(), 0);
                    pbImgPreview.Image = bt;
                }
            }
        }

        Bitmap bt = null;
        float fontSize = 8;
        Color fontColor = Color.Black;
        FontFamily FontF = null;
        FontStyle fontStyle = FontStyle.Regular;
        int Fwidth;
        int Fheight;
        Bitmap BigBt;
        Font f;
        Brush b;

        private void AddFontWatermark(string txt, string Iname, int i) //预览
        {
            b = new SolidBrush(fontColor);
            bt = new Bitmap(368, 75);
            BigBt = new Bitmap(Image.FromFile(ImgDirectoryPath + "\\" + Iname));
            Graphics g = Graphics.FromImage(bt);
            Graphics g1 = Graphics.FromImage(BigBt);
            g.Clear(Color.Gainsboro);
            pbImgPreview.Image = bt;
            if (FontF == null)
            {
                f = new Font(txt, fontSize);
                SizeF XMaxSize = g.MeasureString(txt, f);
                Fwidth = (int) XMaxSize.Width;
                Fheight = (int) XMaxSize.Height;
                g.DrawString(txt, f, b, (int) (368 - Fwidth) / 2, (int) (75 - Fheight) / 2);
                if (cbbPosition.SelectedIndex == 0) //正中
                {
                    g1.DrawString(txt, f, b, (int) (BigBt.Width - Fwidth) / 2, (int) (BigBt.Height - Fheight) / 2);
                }

                if (cbbPosition.SelectedIndex == 1) //左上
                {
                    g1.DrawString(txt, f, b, 30, 30);
                }

                if (cbbPosition.SelectedIndex == 2) //左下
                {
                    g1.DrawString(txt, f, b, 30, (int) (BigBt.Height - Fheight) - 30);
                }

                if (cbbPosition.SelectedIndex == 3) //右上
                {
                    g1.DrawString(txt, f, b, (int) (BigBt.Width - Fwidth), 30);
                }

                if (cbbPosition.SelectedIndex == 4) //右下
                {
                    g1.DrawString(txt, f, b, (int) (BigBt.Width - Fwidth), (int) (BigBt.Height - Fheight) - 30);
                }
            }
            else
            {
                f = new Font(FontF, fontSize, fontStyle);
                SizeF XMaxSize = g.MeasureString(txt, f);
                Fwidth = (int) XMaxSize.Width;
                Fheight = (int) XMaxSize.Height;
                g.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, (int) (368 - Fwidth) / 2,
                    (int) (75 - Fheight) / 2);
                if (cbbPosition.SelectedIndex == 0) //正中
                {
                    g1.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, (int) (BigBt.Width - Fwidth) / 2,
                        (int) (BigBt.Height - Fheight) / 2);
                }

                if (cbbPosition.SelectedIndex == 1) //左上
                {
                    g1.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, 30, 30);
                }

                if (cbbPosition.SelectedIndex == 2) //左下
                {
                    g1.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, 30,
                        (int) (BigBt.Height - Fheight) - 30);
                }

                if (cbbPosition.SelectedIndex == 3) //右上
                {
                    g1.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, (int) (BigBt.Width - Fwidth), Fheight);
                }

                if (cbbPosition.SelectedIndex == 4) //右下
                {
                    g1.DrawString(txt, new Font(FontF, fontSize, fontStyle), b, (int) (BigBt.Width - Fwidth),
                        (int) (BigBt.Height - Fheight) - 30);
                }
            }

            if (i == 1)
            {
                string ipath;
                if (NewFolderPath.Length == 3)
                    ipath = NewFolderPath.Remove(NewFolderPath.LastIndexOf(":") + 1);
                else
                    ipath = NewFolderPath;
                string imgstype =
                    Iname.Substring(Iname.LastIndexOf(".") + 1, Iname.Length - 1 - Iname.LastIndexOf("."));
                if (imgstype.ToLower() == "jpeg" || imgstype.ToLower() == "jpg")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Jpeg);
                }

                if (imgstype.ToLower() == "png")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Png);
                }

                if (imgstype.ToLower() == "bmp")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Bmp);
                }

                if (imgstype.ToLower() == "gif")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Gif);
                }

                g1.Dispose();
                BigBt.Dispose();
            }

            if (i == 2)
            {
                if (cbbPosition.SelectedIndex == 0) //正中
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width) / 2,
                        (int) (BigBt.Height - effect.Height) / 2);
                }

                if (cbbPosition.SelectedIndex == 1) //左上
                {
                    g1.DrawImage(effect, 30, 30);
                }

                if (cbbPosition.SelectedIndex == 2) //左下
                {
                    g1.DrawImage(effect, 30, (int) (BigBt.Height - effect.Height) - 30);
                }

                if (cbbPosition.SelectedIndex == 3) //右上
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width) - 30, 30);
                }

                if (cbbPosition.SelectedIndex == 4) //右下
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width) - 30,
                        (int) (BigBt.Height - effect.Height) - 30);
                }
            }

            if (i == 3)
            {
                if (cbbPosition.SelectedIndex == 0) //正中
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width) / 2,
                        (int) (BigBt.Height - effect.Height) / 2);
                }

                if (cbbPosition.SelectedIndex == 1) //左上
                {
                    g1.DrawImage(effect, 30, 30);
                }

                if (cbbPosition.SelectedIndex == 2) //左下
                {
                    g1.DrawImage(effect, 30, (int) (BigBt.Height - effect.Height) - 30);
                }

                if (cbbPosition.SelectedIndex == 3) //右上
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width), 30);
                }

                if (cbbPosition.SelectedIndex == 4) //右下
                {
                    g1.DrawImage(effect, (int) (BigBt.Width - effect.Width), (int) (BigBt.Height - effect.Height) - 30);
                }

                string ipath;
                if (NewFolderPath.Length == 3)
                    ipath = NewFolderPath.Remove(NewFolderPath.LastIndexOf(":") + 1);
                else
                    ipath = NewFolderPath;
                string imgstype =
                    Iname.Substring(Iname.LastIndexOf(".") + 1, Iname.Length - 1 - Iname.LastIndexOf("."));
                if (imgstype.ToLower() == "jpeg" || imgstype.ToLower() == "jpg")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Jpeg);
                }

                if (imgstype.ToLower() == "png")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Png);
                }

                if (imgstype.ToLower() == "bmp")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Bmp);
                }

                if (imgstype.ToLower() == "gif")
                {
                    BigBt.Save(ipath + "\\_" + Iname, ImageFormat.Gif);
                }
            }
        }

        private void txtWaterMarkFont_TextChanged(object sender, EventArgs e)
        {
            if (lbImgList.Items.Count <= 0)
            {
                MessageBox.Show("请加载图片", "警告", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            else
            {
                AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[0].ToString(), 0);
                pbImgPreview.Image = bt;
            }
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        /// 

        /// 调节透明度
        /// 
        /// 
        /// 
        Bitmap effect;

        Bitmap source;
        Image new_img;

        private void ChangeAlpha()
        {
            pbImgPreview.Refresh();
            source = new Bitmap(Image.FromFile(txtWaterMarkImg.Text.Trim()));
            if (source.Width <= 368)
                effect = new Bitmap(368, 75);
            else
            {
                Image.GetThumbnailImageAbort callb = null;
                //对水印图片生成缩略图,缩小到原图得1/4
                new_img = source.GetThumbnailImage(source.Width / 4, source.Width / 4, callb, new System.IntPtr());
                effect = new Bitmap(this.new_img.Width, this.new_img.Height);
            }

            Graphics _effect = Graphics.FromImage(effect);
            float[][] matrixItems =
            {
                new float[] {1, 0, 0, 0, 0},
                new float[] {0, 1, 0, 0, 0},
                new float[] {0, 0, 1, 0, 0},
                new float[] {0, 0, 0, 0, 0},
                new float[] {0, 0, 0, trackBar1.Value / 255f, 1}
            };
            ColorMatrix imgMatrix = new ColorMatrix(matrixItems);
            ImageAttributes imgEffect = new ImageAttributes();
            imgEffect.SetColorMatrix(imgMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
            if (source.Width <= 368)
            {
                _effect.DrawImage(source, new Rectangle(0, 0, 368, 75), 0, 0, 368, 75, GraphicsUnit.Pixel, imgEffect);
            }
            else
            {
                _effect.DrawImage(new_img, new Rectangle(0, 0, new_img.Width, new_img.Height), 0, 0, new_img.Width,
                    new_img.Height, GraphicsUnit.Pixel, imgEffect);
            }

            pbImgPreview.Image = effect;
        }

        private void trackBar1_ValueChanged(object sender, EventArgs e)
        {
            if (rbPIC.Checked && txtWaterMarkImg.Text.Trim() != "")
                ChangeAlpha();
        }

        private void btnPerform_Click(object sender, EventArgs e)
        {
            if (rbTxt.Checked && txtSavaPath.Text != "" && txtWaterMarkFont.Text != "")
            {
                for (int i = 0; i < lbImgList.Items.Count; i++)
                {
                    AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[i].ToString(), 1);
                }

                MessageBox.Show("添加水印成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }

            if (rbPIC.Checked && txtSavaPath.Text != "" && pbImgPreview.Image != null)
            {
                for (int i = 0; i < lbImgList.Items.Count; i++)
                {
                    AddFontWatermark(txtWaterMarkFont.Text.Trim(), lbImgList.Items[i].ToString(), 3);
                }

                MessageBox.Show("添加水印成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }

        string NewFolderPath;

        private void button2_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                txtSavaPath.Text = folderBrowserDialog1.SelectedPath;
                NewFolderPath = txtSavaPath.Text.Trim();
            }
        }
    }

partial class Form1
    {
        /// 

        /// 必需的设计器变量。
        /// 
        private System.ComponentModel.IContainer components = null;

        /// 

        /// 清理所有正在使用的资源。
        /// 
        /// 如果应释放托管资源，为 true；否则为 false。
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// 

        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// 
        private void InitializeComponent()
        {
            this.colorDialog1 = new System.Windows.Forms.ColorDialog();
            this.statusStrip1 = new System.Windows.Forms.StatusStrip();
            this.tsslStatus = new System.Windows.Forms.ToolStripStatusLabel();
            this.tsslText = new System.Windows.Forms.ToolStripStatusLabel();
            this.splitContainer1 = new System.Windows.Forms.SplitContainer();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.lbImgList = new System.Windows.Forms.ListBox();
            this.button2 = new System.Windows.Forms.Button();
            this.txtSavaPath = new System.Windows.Forms.TextBox();
            this.label5 = new System.Windows.Forms.Label();
            this.btnPreview = new System.Windows.Forms.Button();
            this.btnExit = new System.Windows.Forms.Button();
            this.btnPerform = new System.Windows.Forms.Button();
            this.btnLoadImg = new System.Windows.Forms.Button();
            this.groupBox2 = new System.Windows.Forms.GroupBox();
            this.label6 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.cbbPosition = new System.Windows.Forms.ComboBox();
            this.label2 = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.trackBar1 = new System.Windows.Forms.TrackBar();
            this.rbPIC = new System.Windows.Forms.RadioButton();
            this.rbTxt = new System.Windows.Forms.RadioButton();
            this.txtWaterMarkFont = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.txtWaterMarkImg = new System.Windows.Forms.TextBox();
            this.label3 = new System.Windows.Forms.Label();
            this.btnSelect = new System.Windows.Forms.Button();
            this.pbImgPreview = new System.Windows.Forms.PictureBox();
            this.fontDialog1 = new System.Windows.Forms.FontDialog();
            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
            this.openFileDialog2 = new System.Windows.Forms.OpenFileDialog();
            this.folderBrowserDialog1 = new System.Windows.Forms.FolderBrowserDialog();
            this.statusStrip1.SuspendLayout();
            this.splitContainer1.Panel1.SuspendLayout();
            this.splitContainer1.Panel2.SuspendLayout();
            this.splitContainer1.SuspendLayout();
            this.groupBox1.SuspendLayout();
            this.groupBox2.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.pbImgPreview)).BeginInit();
            this.SuspendLayout();
            // 
            // statusStrip1
            // 
            this.statusStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.tsslStatus,
            this.tsslText});
            this.statusStrip1.Location = new System.Drawing.Point(0, 368);
            this.statusStrip1.Name = "statusStrip1";
            this.statusStrip1.Size = new System.Drawing.Size(601, 22);
            this.statusStrip1.TabIndex = 0;
            this.statusStrip1.Text = "statusStrip1";
            // 
            // tsslStatus
            // 
            this.tsslStatus.Name = "tsslStatus";
            this.tsslStatus.Size = new System.Drawing.Size(53, 17);
            this.tsslStatus.Text = "准备就绪";
            // 
            // tsslText
            // 
            this.tsslText.Name = "tsslText";
            this.tsslText.Size = new System.Drawing.Size(0, 17);
            // 
            // splitContainer1
            // 
            this.splitContainer1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.splitContainer1.IsSplitterFixed = true;
            this.splitContainer1.Location = new System.Drawing.Point(0, 0);
            this.splitContainer1.Name = "splitContainer1";
            // 
            // splitContainer1.Panel1
            // 
            this.splitContainer1.Panel1.Controls.Add(this.groupBox1);
            // 
            // splitContainer1.Panel2
            // 
            this.splitContainer1.Panel2.Controls.Add(this.button2);
            this.splitContainer1.Panel2.Controls.Add(this.txtSavaPath);
            this.splitContainer1.Panel2.Controls.Add(this.label5);
            this.splitContainer1.Panel2.Controls.Add(this.btnPreview);
            this.splitContainer1.Panel2.Controls.Add(this.btnExit);
            this.splitContainer1.Panel2.Controls.Add(this.btnPerform);
            this.splitContainer1.Panel2.Controls.Add(this.btnLoadImg);
            this.splitContainer1.Panel2.Controls.Add(this.groupBox2);
            this.splitContainer1.Size = new System.Drawing.Size(601, 368);
            this.splitContainer1.SplitterDistance = 206;
            this.splitContainer1.SplitterWidth = 2;
            this.splitContainer1.TabIndex = 1;
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.lbImgList);
            this.groupBox1.Location = new System.Drawing.Point(7, 2);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(189, 359);
            this.groupBox1.TabIndex = 0;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "加水印图片列表";
            // 
            // lbImgList
            // 
            this.lbImgList.FormattingEnabled = true;
            this.lbImgList.ItemHeight = 12;
            this.lbImgList.Location = new System.Drawing.Point(6, 13);
            this.lbImgList.Name = "lbImgList";
            this.lbImgList.Size = new System.Drawing.Size(177, 340);
            this.lbImgList.TabIndex = 0;
            this.lbImgList.SelectedIndexChanged += new System.EventHandler(this.lbImgList_SelectedIndexChanged);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(321, 291);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(65, 23);
            this.button2.TabIndex = 8;
            this.button2.Text = "浏览...";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // txtSavaPath
            // 
            this.txtSavaPath.BackColor = System.Drawing.Color.White;
            this.txtSavaPath.Enabled = false;
            this.txtSavaPath.Location = new System.Drawing.Point(78, 292);
            this.txtSavaPath.Name = "txtSavaPath";
            this.txtSavaPath.ReadOnly = true;
            this.txtSavaPath.Size = new System.Drawing.Size(239, 21);
            this.txtSavaPath.TabIndex = 7;
            // 
            // label5
            // 
            this.label5.AutoSize = true;
            this.label5.Location = new System.Drawing.Point(13, 296);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(65, 12);
            this.label5.TabIndex = 6;
            this.label5.Text = "保存位置：";
            // 
            // btnPreview
            // 
            this.btnPreview.Location = new System.Drawing.Point(114, 327);
            this.btnPreview.Name = "btnPreview";
            this.btnPreview.Size = new System.Drawing.Size(75, 23);
            this.btnPreview.TabIndex = 5;
            this.btnPreview.Text = "水印预览";
            this.btnPreview.UseVisualStyleBackColor = true;
            this.btnPreview.Click += new System.EventHandler(this.btnPreview_Click);
            // 
            // btnExit
            // 
            this.btnExit.Location = new System.Drawing.Point(301, 327);
            this.btnExit.Name = "btnExit";
            this.btnExit.Size = new System.Drawing.Size(75, 23);
            this.btnExit.TabIndex = 4;
            this.btnExit.Text = "关闭退出";
            this.btnExit.UseVisualStyleBackColor = true;
            this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
            // 
            // btnPerform
            // 
            this.btnPerform.Location = new System.Drawing.Point(207, 327);
            this.btnPerform.Name = "btnPerform";
            this.btnPerform.Size = new System.Drawing.Size(75, 23);
            this.btnPerform.TabIndex = 3;
            this.btnPerform.Text = "开始执行";
            this.btnPerform.UseVisualStyleBackColor = true;
            this.btnPerform.Click += new System.EventHandler(this.btnPerform_Click);
            // 
            // btnLoadImg
            // 
            this.btnLoadImg.Location = new System.Drawing.Point(14, 327);
            this.btnLoadImg.Name = "btnLoadImg";
            this.btnLoadImg.Size = new System.Drawing.Size(75, 23);
            this.btnLoadImg.TabIndex = 2;
            this.btnLoadImg.Text = "加载图片";
            this.btnLoadImg.UseVisualStyleBackColor = true;
            this.btnLoadImg.Click += new System.EventHandler(this.btnLoadImg_Click);
            // 
            // groupBox2
            // 
            this.groupBox2.Controls.Add(this.label6);
            this.groupBox2.Controls.Add(this.label4);
            this.groupBox2.Controls.Add(this.cbbPosition);
            this.groupBox2.Controls.Add(this.label2);
            this.groupBox2.Controls.Add(this.button1);
            this.groupBox2.Controls.Add(this.trackBar1);
            this.groupBox2.Controls.Add(this.rbPIC);
            this.groupBox2.Controls.Add(this.rbTxt);
            this.groupBox2.Controls.Add(this.txtWaterMarkFont);
            this.groupBox2.Controls.Add(this.label1);
            this.groupBox2.Controls.Add(this.txtWaterMarkImg);
            this.groupBox2.Controls.Add(this.label3);
            this.groupBox2.Controls.Add(this.btnSelect);
            this.groupBox2.Controls.Add(this.pbImgPreview);
            this.groupBox2.Location = new System.Drawing.Point(3, 3);
            this.groupBox2.Name = "groupBox2";
            this.groupBox2.Size = new System.Drawing.Size(383, 274);
            this.groupBox2.TabIndex = 0;
            this.groupBox2.TabStop = false;
            this.groupBox2.Text = "水印设置";
            // 
            // label6
            // 
            this.label6.AutoSize = true;
            this.label6.Location = new System.Drawing.Point(10, 171);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(257, 12);
            this.label6.TabIndex = 16;
            this.label6.Text = "注意：水印图片建议使用分辨率为368*75的图片";
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(244, 145);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(65, 12);
            this.label4.TabIndex = 4;
            this.label4.Text = "水印位置：";
            // 
            // cbbPosition
            // 
            this.cbbPosition.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cbbPosition.FormattingEnabled = true;
            this.cbbPosition.Items.AddRange(new object[] {
            "正中",
            "左上",
            "左下",
            "右上",
            "右下"});
            this.cbbPosition.Location = new System.Drawing.Point(315, 141);
            this.cbbPosition.Name = "cbbPosition";
            this.cbbPosition.Size = new System.Drawing.Size(65, 20);
            this.cbbPosition.TabIndex = 15;
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(8, 147);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(65, 12);
            this.label2.TabIndex = 14;
            this.label2.Text = "透明设置：";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(315, 48);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(65, 23);
            this.button1.TabIndex = 13;
            this.button1.Text = "字体设置";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // trackBar1
            // 
            this.trackBar1.AutoSize = false;
            this.trackBar1.Enabled = false;
            this.trackBar1.LargeChange = 1;
            this.trackBar1.Location = new System.Drawing.Point(69, 140);
            this.trackBar1.Maximum = 255;
            this.trackBar1.Name = "trackBar1";
            this.trackBar1.Size = new System.Drawing.Size(179, 22);
            this.trackBar1.TabIndex = 12;
            this.trackBar1.Value = 255;
            this.trackBar1.ValueChanged += new System.EventHandler(this.trackBar1_ValueChanged);
            this.trackBar1.Enter += new System.EventHandler(this.trackBar1_Enter);
            // 
            // rbPIC
            // 
            this.rbPIC.AutoSize = true;
            this.rbPIC.Location = new System.Drawing.Point(10, 82);
            this.rbPIC.Name = "rbPIC";
            this.rbPIC.Size = new System.Drawing.Size(95, 16);
            this.rbPIC.TabIndex = 11;
            this.rbPIC.Text = "添加图片水印";
            this.rbPIC.UseVisualStyleBackColor = true;
            this.rbPIC.CheckedChanged += new System.EventHandler(this.rbPIC_CheckedChanged);
            // 
            // rbTxt
            // 
            this.rbTxt.AutoSize = true;
            this.rbTxt.Checked = true;
            this.rbTxt.Location = new System.Drawing.Point(8, 22);
            this.rbTxt.Name = "rbTxt";
            this.rbTxt.Size = new System.Drawing.Size(95, 16);
            this.rbTxt.TabIndex = 10;
            this.rbTxt.TabStop = true;
            this.rbTxt.Text = "添加文字水印";
            this.rbTxt.UseVisualStyleBackColor = true;
            this.rbTxt.CheckedChanged += new System.EventHandler(this.rbTxt_CheckedChanged);
            // 
            // txtWaterMarkFont
            // 
            this.txtWaterMarkFont.Location = new System.Drawing.Point(75, 49);
            this.txtWaterMarkFont.Name = "txtWaterMarkFont";
            this.txtWaterMarkFont.Size = new System.Drawing.Size(239, 21);
            this.txtWaterMarkFont.TabIndex = 2;
            this.txtWaterMarkFont.TextChanged += new System.EventHandler(this.txtWaterMarkFont_TextChanged);
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(8, 53);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(65, 12);
            this.label1.TabIndex = 1;
            this.label1.Text = "水印文字：";
            // 
            // txtWaterMarkImg
            // 
            this.txtWaterMarkImg.BackColor = System.Drawing.Color.White;
            this.txtWaterMarkImg.Enabled = false;
            this.txtWaterMarkImg.Location = new System.Drawing.Point(75, 109);
            this.txtWaterMarkImg.Name = "txtWaterMarkImg";
            this.txtWaterMarkImg.ReadOnly = true;
            this.txtWaterMarkImg.Size = new System.Drawing.Size(239, 21);
            this.txtWaterMarkImg.TabIndex = 1;
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(8, 114);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(65, 12);
            this.label3.TabIndex = 0;
            this.label3.Text = "水印图片：";
            // 
            // btnSelect
            // 
            this.btnSelect.Location = new System.Drawing.Point(315, 108);
            this.btnSelect.Name = "btnSelect";
            this.btnSelect.Size = new System.Drawing.Size(65, 23);
            this.btnSelect.TabIndex = 2;
            this.btnSelect.Text = "浏览...";
            this.btnSelect.UseVisualStyleBackColor = true;
            this.btnSelect.Click += new System.EventHandler(this.btnSelect_Click);
            // 
            // pbImgPreview
            // 
            this.pbImgPreview.BackColor = System.Drawing.Color.WhiteSmoke;
            this.pbImgPreview.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.pbImgPreview.Location = new System.Drawing.Point(9, 191);
            this.pbImgPreview.Name = "pbImgPreview";
            this.pbImgPreview.Size = new System.Drawing.Size(368, 75);
            this.pbImgPreview.SizeMode = System.Windows.Forms.PictureBoxSizeMode.CenterImage;
            this.pbImgPreview.TabIndex = 3;
            this.pbImgPreview.TabStop = false;
            // 
            // openFileDialog1
            // 
            this.openFileDialog1.Filter = "图片文件|*.jpeg;*.jpg;*.png;*.bmp;*.gif";
            this.openFileDialog1.Multiselect = true;
            // 
            // openFileDialog2
            // 
            this.openFileDialog2.Filter = "图片文件|*.jpeg;*.jpg;*.png;*.bmp";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(601, 390);
            this.Controls.Add(this.splitContainer1);
            this.Controls.Add(this.statusStrip1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "图片批量加水印";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.statusStrip1.ResumeLayout(false);
            this.statusStrip1.PerformLayout();
            this.splitContainer1.Panel1.ResumeLayout(false);
            this.splitContainer1.Panel2.ResumeLayout(false);
            this.splitContainer1.Panel2.PerformLayout();
            this.splitContainer1.ResumeLayout(false);
            this.groupBox1.ResumeLayout(false);
            this.groupBox2.ResumeLayout(false);
            this.groupBox2.PerformLayout();
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.pbImgPreview)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.ColorDialog colorDialog1;
        private System.Windows.Forms.StatusStrip statusStrip1;
        private System.Windows.Forms.SplitContainer splitContainer1;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.ListBox lbImgList;
        private System.Windows.Forms.GroupBox groupBox2;
        private System.Windows.Forms.TextBox txtWaterMarkFont;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.FontDialog fontDialog1;
        private System.Windows.Forms.Button btnSelect;
        private System.Windows.Forms.TextBox txtWaterMarkImg;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.PictureBox pbImgPreview;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.Button btnLoadImg;
        private System.Windows.Forms.Button btnPreview;
        private System.Windows.Forms.Button btnExit;
        private System.Windows.Forms.Button btnPerform;
        private System.Windows.Forms.RadioButton rbPIC;
        private System.Windows.Forms.RadioButton rbTxt;
        private System.Windows.Forms.OpenFileDialog openFileDialog1;
        private System.Windows.Forms.ToolStripStatusLabel tsslStatus;
        private System.Windows.Forms.ToolStripStatusLabel tsslText;
        private System.Windows.Forms.TrackBar trackBar1;
        private System.Windows.Forms.OpenFileDialog openFileDialog2;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.ComboBox cbbPosition;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.TextBox txtSavaPath;
        private System.Windows.Forms.Label label5;
        private System.Windows.Forms.FolderBrowserDialog folderBrowserDialog1;
        private System.Windows.Forms.Label label6;
    }

    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        public Image ig = null;
        private void Form2_Load(object sender, EventArgs e)
        {
            pictureBox1.Image = ig;
        }
    }

  partial class Form2
    {
        /// 

        /// Required designer variable.
        /// 
        private System.ComponentModel.IContainer components = null;

        /// 

        /// Clean up any resources being used.
        /// 
        /// true if managed resources should be disposed; otherwise, false.
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// 

        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 
        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.pictureBox1.Location = new System.Drawing.Point(0, 0);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(630, 448);
            this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            // 
            // Form2
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(630, 448);
            this.Controls.Add(this.pictureBox1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = "Form2";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "水印预览";
            this.Load += new System.EventHandler(this.Form2_Load);
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.PictureBox pictureBox1;
    }

以上就是C#实现批量给图片添加水印的示例代码的详细内容，更多关于C#图片添加水印的资料请关注脚本之家其它相关文章！