C#-从入门到精通-第12章 Windows应用程序高级控件

【ImageList控件】(存储图像控件)

用于存储图像资源。
1.在ImageList控件中添加图像
使用ImageList控件的Images属性的Add方法。

private void Form1_Load(object sender, EventArgs e)
        {
            string Path = Application.StartupPath.Substring(0,Application.StartupPath.Substring(0,Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            Path += @"\01.jpg";
            string Path2 = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            Path2 += @"\02.jpg";
            Image Mimg=Image.FromFile(Path,true);
            imageList1.Images.Add(Mimg);
            Image Mimg2 = Image.FromFile(Path2, true);
            imageList1.Images.Add(Mimg2);
            imageList1.ImageSize = new Size(200,165);
            pictureBox1.Width = 200;
            pictureBox1.Height = 165;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            pictureBox1.Image = imageList1.Images[0];
        }
        private void button2_Click(object sender, EventArgs e)
        {
            pictureBox1.Image = imageList1.Images[1];
        }

2.在ImageList控件中移除图像
Images属性的RemoveAt方法移除指定图像，Clear方法清空所有图像。

private void Form1_Load(object sender, EventArgs e)
        {
            pictureBox1.Width = 200;
            pictureBox1.Height = 165;
            string Path = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            Path += @"\01.jpg";
            Image img = Image.FromFile(Path, true);
            imageList1.Images.Add(img);
            imageList1.ImageSize = new Size(200,165);
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (imageList1.Images.Count == 0)
            {
                MessageBox.Show("没有图像");
            }
            else
            {
                pictureBox1.Image = imageList1.Images[0];
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            imageList1.Images.RemoveAt(0);
            pictureBox1.Image = null;
        }

【ListView控件】(列表视图控件)

ListView控件显示带图标的项的列表。通过View属性设置项在控件中显示的方式。
1.在ListView控件中添加和移除项
1）添加项
使用ListView控件的Items属性的Add方法。

private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "")
            {
                MessageBox.Show("项目不能为空");
            }
            else
            {
                listView1.Items.Add(textBox1.Text.Trim());
            }
        }

2）移除项
Items属性的RemoveAt方法移除指定项，Clear方法清空所有项。

private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "")
            {
                MessageBox.Show("项目不能为空");
            }
            else
            {
                listView1.Items.Add(textBox1.Text.Trim());
                textBox1.Text = "";
            }
        }
        private void button3_Click(object sender, EventArgs e)
        {
            if (listView1.Items.Count == 0)
            {
                MessageBox.Show("项目中已经没有项目");
            }
            else
            {
                listView1.Items.Clear();
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count == 0)
            {
                MessageBox.Show("请选择要删除的项");
            }
            else
            {
                listView1.Items.RemoveAt(listView1.SelectedItems[0].Index);
                listView1.SelectedItems.Clear();
            }
        }

2.选择ListView控件中的项
通过控件的Selected属性。

private void Form1_Load(object sender, EventArgs e)
        {
            listView1.Items.Add("用一生下载你");
            listView1.Items.Add("芸烨湘枫");
            listView1.Items.Add("一生所爱");
            listView1.Items[2].Selected = true;//选中第3项
        }

3.为ListView控件中的项添加图标
使用ImageList控件设置ListView控件中项的图标。
1）设置ListView控件属性（SmallImageList、LargeImageList、StateImageList）
2）设置ImageIndex或者StateImageIndex属性。

private void Form1_Load(object sender, EventArgs e)
        {
            listView1.LargeImageList = imageList1;//设置属性
            imageList1.ImageSize = new Size(37,36);
            imageList1.Images.Add(Image.FromFile("01.png"));
            imageList1.Images.Add(Image.FromFile("02.png"));
            listView1.SmallImageList = imageList1;//设置属性
            listView1.Items.Add("用一生下载你");
            listView1.Items.Add("芸烨湘枫");
            listView1.Items[0].ImageIndex = 0;
            listView1.Items[1].ImageIndex = 1;
        }

4.在ListView控件中启用平铺视图
将View属性设置为Tile。可以通过TileSize属性调整大小。

private void Form1_Load(object sender, EventArgs e)
        {
            listView1.View = View.Tile;
            listView1.LargeImageList = imageList1;
            imageList1.Images.Add(Image.FromFile("1.bmp"));
            imageList1.Images.Add(Image.FromFile("2.bmp"));
            listView1.Items.Add("用一生下载你");
            listView1.Items.Add("一生所爱");
            listView1.Items.Add("用一生下载你");
            listView1.Items.Add("一生所爱");
            listView1.Items.Add("用一生下载你");
            listView1.Items[0].ImageIndex = 0;
            listView1.Items[1].ImageIndex = 1;
            listView1.Items[2].ImageIndex = 0;
            listView1.Items[3].ImageIndex = 1;
            listView1.Items[4].ImageIndex = 0;
            listView1.TileSize = new Size(100, 50); 
        }

5.为ListView控件中的项分组
1）添加组
使用Group集合的Add方法将指定的ListViewGroup添加到集合。
2）移除组
使用Group集合的RemoveAt方法移除指定组，Clear方法清空所有组。

listView1.Groups.RemoveAt（1）；//移除索引为1的组
listView1.Groups.Clear（）；

3）向组分配项或在组之间移动项

private void Form1_Load(object sender, EventArgs e)
        {
            listView1.View = View.SmallIcon;//设置样式
            //建立两个组
            listView1.Groups.Add(new ListViewGroup("名称",HorizontalAlignment.Left));
            listView1.Groups.Add(new ListViewGroup("年龄", HorizontalAlignment.Left));
            listView1.Items.Add("用一生下载你");
            listView1.Items.Add("芸烨湘枫");
            listView1.Items.Add("一生所爱");
            listView1.Items.Add("28");
            listView1.Items.Add("27");
            listView1.Items.Add("26");
            //将1，2，3项添加到1组
            listView1.Items[0].Group = listView1.Groups[0];
            listView1.Items[1].Group = listView1.Groups[0];
            listView1.Items[2].Group = listView1.Groups[0];
            //将4，5，6项添加到2组
            listView1.Items[3].Group = listView1.Groups[1];
            listView1.Items[4].Group = listView1.Groups[1];
            listView1.Items[5].Group = listView1.Groups[1];
        }

【TreeView控件】（树控件）

1.添加和删除树节点
1）添加节点
使用TreeView控件的Nodes属性的Add方法

private void Form1_Load(object sender, EventArgs e)
        {
            //建立3个父节点
            TreeNode tn1 = treeView1.Nodes.Add("名称");
            TreeNode tn2 = treeView1.Nodes.Add("性别");
            TreeNode tn3 = treeView1.Nodes.Add("年龄");
            //建立3个子节点
            TreeNode Ntn1 = new TreeNode("用一生下载你");
            TreeNode Ntn2 = new TreeNode("芸烨湘枫");
            TreeNode Ntn3 = new TreeNode("一生所爱");
            //将3个子节点添加到第1个父节点
            tn1.Nodes.Add(Ntn1);
            tn1.Nodes.Add(Ntn2);
            tn1.Nodes.Add(Ntn3);
            TreeNode Stn1 = new TreeNode("男");
            TreeNode Stn2 = new TreeNode("女");
            TreeNode Stn3 = new TreeNode("男");
            tn2.Nodes.Add(Stn1);
            tn2.Nodes.Add(Stn2);
            tn2.Nodes.Add(Stn3);
            TreeNode Atn1 = new TreeNode("28");
            TreeNode Atn2 = new TreeNode("27");
            TreeNode Atn3 = new TreeNode("26");
            tn3.Nodes.Add(Atn1);
            tn3.Nodes.Add(Atn2);
            tn3.Nodes.Add(Atn3);
        }

2）移除节点
使用TreeView控件的Nodes属性的Remove方法。

private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode tn1 = treeView1.Nodes.Add("名称");
            TreeNode Ntn1 = new TreeNode("用一生下载你");
            TreeNode Ntn2 = new TreeNode("芸烨湘枫");
            TreeNode Ntn3 = new TreeNode("一生所爱");
            tn1.Nodes.Add(Ntn1);
            tn1.Nodes.Add(Ntn2);
            tn1.Nodes.Add(Ntn3);
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (treeView1.SelectedNode.Text == "名称")
            {
                MessageBox.Show("请选择要删除的子节点");
            }
            else
            {
                treeView1.Nodes.Remove(treeView1.SelectedNode);
            }
        }

2.获取树控件中选中的节点
在控件的AfterSelect事件中，使用EventArgs对象返回对已单击对象的引用。

private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode tn1 = treeView1.Nodes.Add("名称");
            TreeNode Ntn1 = new TreeNode("用一生下载你");
            TreeNode Ntn2 = new TreeNode("芸烨湘枫");
            TreeNode Ntn3 = new TreeNode("一生所爱");
            tn1.Nodes.Add(Ntn1);
            tn1.Nodes.Add(Ntn2);
            tn1.Nodes.Add(Ntn3);
        }
        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            label1.Text = "当前选中的节点：" + e.Node.Text;
        }

3.为树控件中的节点设置图标

private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode tn1 = treeView1.Nodes.Add("组织结构");
            TreeNode Ntn1 = new TreeNode("C#部门");
            TreeNode Ntn2 = new TreeNode("ASP.NET部门");
            TreeNode Ntn3 = new TreeNode("VB部门");
            tn1.Nodes.Add(Ntn1);
            tn1.Nodes.Add(Ntn2);
            tn1.Nodes.Add(Ntn3);
            imageList1.Images.Add(Image.FromFile("1.png"));
            imageList1.Images.Add(Image.FromFile("2.png"));
            //设置treeView1的ImageList属性为imageList1
            treeView1.ImageList = imageList1;
            imageList1.ImageSize = new Size(16,16);
            //设置节点的图标
            treeView1.ImageIndex = 0;
            //设置选中节点的图标
            treeView1.SelectedImageIndex = 1;
        }

【DateTimePicker控件】（日期控件）
1.使用DateTimePicker控件显示时间
通过将控件的Format属性设置为Time，实现控件只显示时间。

private void Form1_Load(object sender, EventArgs e)
        {
            dateTimePicker1.Format = DateTimePickerFormat.Time;
            textBox1.Text = dateTimePicker1.Text;
        }

2.使用DateTimePicker控件以自定义格式显示日期
通过控件的CustomFormat属性

private void Form1_Load(object sender, EventArgs e)
        {
            dateTimePicker1.Format = DateTimePickerFormat.Custom;
            dateTimePicker1.CustomFormat = "MMMM dd, yyyy - dddd";
            label1.Text = dateTimePicker1.Text;
        }

3.返回DateTimePicker控件中选择的日期
Value属性

private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.Text = dateTimePicker1.Text;
            textBox2.Text = dateTimePicker1.Value.Year.ToString();
            textBox3.Text = dateTimePicker1.Value.Month.ToString();
            textBox4.Text = dateTimePicker1.Value.Day.ToString();
        }

【MonthCalendar控件】（月历控件）
1.更改MonthCalendar控件的外观
1）更改月历的配色方案

private void Form1_Load(object sender, EventArgs e)
        {
            //设置标题背景为蓝色
            monthCalendar1.TitleBackColor = System.Drawing.Color.Blue;
            //设置控件其他日期的颜色为红色
            monthCalendar1.TrailingForeColor = System.Drawing.Color.Red;
            //标题上的文字为黄色
            monthCalendar1.TitleForeColor = System.Drawing.Color.Yellow;
        }

2）显示周数
将ShowWeekNumbers属性设置为true就可以了。

private void Form1_Load(object sender, EventArgs e)
        {
            monthCalendar1.ShowWeekNumbers = true;
        }

2.在MonthCalendar控件中显示多个月份

private void Form1_Load(object sender, EventArgs e)
        {
            //设置CalendarDimensions属性，在水平和垂直方向都显示2个月份
            monthCalendar1.CalendarDimensions = new Size(2, 2);
        }

3.在MonthCalendar控件中以粗体显示特定日期

private void Form1_Load(object sender, EventArgs e)
        {
            DateTime myVacation1 = new DateTime(2008, 3, 2);
            monthCalendar1.AddBoldedDate(myVacation1);
            monthCalendar1.UpdateBoldedDates();
        }

4.在MonthCalendar控件中选择日期范围

private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.Text = monthCalendar1.TodayDate.ToString();
        }
        private void monthCalendar1_DateChanged(object sender, DateRangeEventArgs e)
        {
            textBox2.Text = monthCalendar1.SelectionStart.ToString();
            textBox3.Text = monthCalendar1.SelectionEnd.ToString();
        }

【其他高级控件】
1.使用ErrorProvider控件验证文本框输入

private int a,b,c;
        private void textBox1_Validating(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (textBox1.Text == "")
            {
                errorProvider1.SetError(textBox1, "不能为空");
            }
            else
            {
                errorProvider1.SetError(textBox1,"");
                a = 1;
            }
        }
        private void textBox2_Validating(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (textBox2.Text == "")
            {
                errorProvider2.SetError(textBox2, "不能为空");
            }
            else
            {
                try
                {
                    int x = Int32.Parse(textBox2.Text);
                    errorProvider2.SetError(textBox2,"");
                    b = 1;
                }
                catch
                {
                    errorProvider2.SetError(textBox2, "请输入一个数");
                }
            }
        }
        private void textBox3_Validating(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (textBox3.Text == "")
            {
                errorProvider3.SetError(textBox3, "不能为空");
            }
            else
            {
                errorProvider3.SetError(textBox3, "");
                c = 1;
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            textBox2.Text = "";
            textBox3.Text = "";
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (a + b + c == 3)
            {
                MessageBox.Show("数据录入成功","提示",MessageBoxButtons.OK,MessageBoxIcon.Warning);
            }
        }

2.使用HelpProvider控件调用帮助文件

通过控件的Helpamespace属性和SetShowHelp方法。

private void Form1_Load(object sender, EventArgs e)
        {
            //设置文件位置
            string strPath = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0,
Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            strPath += @"\helpPage.htm";
            helpProvider1.HelpNamespace = strPath;
            MessageBox.Show(strPath);
            helpProvider1.SetShowHelp(this,true);
        }

3.使用Timer控件设置时间间隔

private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Interval = 1000;//设置Interval属性1000毫秒
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            textBox1.Text = DateTime.Now.ToString();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (button1.Text == "开始")
            {
                timer1.Enabled = true;//启动timer控件
                button1.Text ="停止";
            }
            else
            {
                timer1.Enabled = false;//停止timer控件
                button1.Text = "开始";
            }
        }

4.使用ProgressBar控件显示程序运行进度条
控件比较重要的属性：Value：表示已完成的进度；Minimum：进度条的最小值；Maximum：进度条的最大值。

private void button1_Click(object sender, EventArgs e)
        {
            button1.Enabled = false;
            progressBar1.Minimum = 0;
            progressBar1.Maximum = 5000;
            progressBar1.Step = 1;//设置增值为1
            for (int i = 0; i <5000; i++)
            {
                progressBar1.PerformStep();//使用PerformStep方法按step的值递增
                textBox1.Text = "进度值：" + progressBar1.Value.ToString();
            }
        }