public void CreateImage(string name, string filePath)
{
int wid = 400;
int high = 200;
Font font = new Font("Arial", 28, FontStyle.Bold);
//绘笔颜色
SolidBrush brush = new SolidBrush(Color.Green);
StringFormat format = new StringFormat(StringFormatFlags.NoClip);
Bitmap image = new Bitmap(wid, high);
Graphics g = Graphics.FromImage(image);
SizeF sizef = g.MeasureString(name, font, PointF.Empty, format);
int width = (int)(sizef.Width + 1);
int height = (int)(sizef.Height + 1);
image.Dispose();
image = new Bitmap(width, height);
//g.Clear(ColorTranslator.FromHtml("#f0f0f0"));
g = Graphics.FromImage(image);
g.Clear(Color.White);//Transparent
RectangleF rect = new RectangleF(0, 0, width, height);
// RectangleF rect = new RectangleF(5, 2, wid, high);
//绘制图片
g.DrawString(name, font, brush, rect);
//保存图片
image.Save(filePath, ImageFormat.Png);
//释放对象
g.Dispose();
image.Dispose();
}
效果图
通过第三方线生成二码：
int len = show.Length / 5;
for (int j = 1; j <= len; j++)
{
show = show.Insert(j*5+j-1, "\n");
}
CreateImage(show, path + "dt_Site_Text/" + text + ".png");
System.Uri httpUrl = new System.Uri("http://qr.topscan.com/api.php?text=" + text + "&logo=http://111.17.223.51:28080/AffixFile/dt_Site_Text/" + text + ".png");
req = (HttpWebRequest)(WebRequest.Create(httpUrl));
req.Timeout = 180000; //设置超时值10秒
req.Method = "GET";
res = (HttpWebResponse)(req.GetResponse());
img = new Bitmap(res.GetResponseStream());//获取图片
img.Save(path + "dt_Site_Scan/" + text + ".png");//随机名*/
效果如下：
通过QRCode生成二码：
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.IO;
using System.Windows.Forms;
using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
namespace QRCodeSample
{
public partial class QrCodeSampleApp : Form
{
public QrCodeSampleApp()
{
InitializeComponent();
}
private void frmSample_Load(object sender, EventArgs e)
{
cboEncoding.SelectedIndex = 2;
cboVersion.SelectedIndex = 6;
cboCorrectionLevel.SelectedIndex = 1;
}
private void btnEncode_Click_1(object sender, EventArgs e)
{
if (txtEncodeData.Text.Trim() == String.Empty)
{
MessageBox.Show("内容不能为空！");
txtEncodeData.Focus();
return;
}
Image image = CreateImage();
if (image != null)
{
picEncode.Image = image;
}
string name = txtEncodeData.Text;
int len = name.Length / 5;
for (int i = 1; i <= len / 5; i++)
{
name = name.Insert((i * 5)+i-1, "\n");
}
CreateImage(name, @"E:\emulator\QRCode\QRCode\QRCodeSampleApp\Name.jpg");
}
private Image CreateImage()
{
var encoder = new QRCodeEncoder();
String encoding = cboEncoding.Text;
if (encoding == "Byte")
{
encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
}
else if (encoding == "AlphaNumeric")
{
encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;
}
else if (encoding == "Numeric")
{
encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.NUMERIC;
}
try
{
int scale = Convert.ToInt16(txtSize.Text);
encoder.QRCodeScale = scale;
}
catch (Exception ex)
{
MessageBox.Show("大小参数错误!");
return null;
}
try
{
int version = Convert.ToInt16(cboVersion.Text);
encoder.QRCodeVersion = version;
}
catch (Exception ex)
{
MessageBox.Show("版本参数错误 !");
return null;
}
string errorCorrect = cboCorrectionLevel.Text;
if (errorCorrect == "L")
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
else if (errorCorrect == "M")
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
else if (errorCorrect == "Q")
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.Q;
else if (errorCorrect == "H")
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H;
String data = txtEncodeData.Text;
Image image = encoder.Encode(data);
return image;
}
private void btnSave_Click(object sender, EventArgs e)
{
saveFileDialog.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PNG Image|*.png";
saveFileDialog.Title = "Save";
saveFileDialog.FileName = DateTime.Now.ToString("yyyyMMddHHmmss")+".jpg";
saveFileDialog.ShowDialog();
if (saveFileDialog.FileName != "")
{
var fileStream = (FileStream)saveFileDialog.OpenFile();
switch (saveFileDialog.FilterIndex)
{
case 1:
picEncode.Image.Save(fileStream, ImageFormat.Jpeg);
break;
case 2:
picEncode.Image.Save(fileStream, ImageFormat.Bmp);
break;
case 3:
picEncode.Image.Save(fileStream, ImageFormat.Gif);
break;
case 4:
picEncode.Image.Save(fileStream, ImageFormat.Png);
break;
}
fileStream.Close();
}
}
public void CreateImage(string name, string filePath)
{
int wid = 400;
int high = 200;
Font font = new Font("Arial", 28, FontStyle.Bold);
//绘笔颜色
SolidBrush brush = new SolidBrush(Color.Green);
StringFormat format = new StringFormat(StringFormatFlags.NoClip);
Bitmap image = new Bitmap(wid, high);
Graphics g = Graphics.FromImage(image);
SizeF sizef = g.MeasureString(name, font, PointF.Empty, format);
int width = (int)(sizef.Width + 1);
int height = (int)(sizef.Height + 1);
image.Dispose();
image = new Bitmap(width, height);
//g.Clear(ColorTranslator.FromHtml("#f0f0f0"));
g = Graphics.FromImage(image);
g.Clear(Color.White);
RectangleF rect = new RectangleF(0, 0, width, height);
// RectangleF rect = new RectangleF(5, 2, wid, high);
//绘制图片
g.DrawString(name, font, brush, rect);
//保存图片
image.Save(filePath, ImageFormat.Png);
//释放对象
g.Dispose();
image.Dispose();
}
private void btnPrint_Click(object sender, EventArgs e)
{
printDialog.Document = printDocument1;
DialogResult r = printDialog.ShowDialog();
if (r == DialogResult.OK)
{
printDocument1.Print();
}
}
private void PrintDocument_PrintPage(object sender, PrintPageEventArgs e)
{
e.Graphics.DrawImage(picEncode.Image, 0, 0);
}
private void btnOpen_Click(object sender, EventArgs e)
{
openFile.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PNG Image|*.png|All files (*.*)|*.*";
openFile.FilterIndex = 1;
openFile.RestoreDirectory = true;
openFile.FileName = string.Empty;
if (openFile.ShowDialog() == DialogResult.OK)
{
String fileName = openFile.FileName;
picDecode.Image = new Bitmap(fileName);
}
}
private void btnDecode_Click(object sender, EventArgs e)
{
try
{
var decoder = new QRCodeDecoder();
//QRCodeDecoder.Canvas = new ConsoleCanvas();
String decodedString = decoder.decode(new QRCodeBitmapImage(new Bitmap(picDecode.Image)));
txtDecodedData.Text = decodedString;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnChooseIco_Click(object sender, EventArgs e)
{
openFile.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PNG Image|*.png|All files (*.*)|*.*";
openFile.FilterIndex = 1;
openFile.RestoreDirectory = true;
openFile.FileName = string.Empty;
if (openFile.ShowDialog() == DialogResult.OK)
{
String fileName = openFile.FileName;
PicIco.Image = new Bitmap(fileName);
}
}
private void btnCreateWithIco_Click(object sender, EventArgs e)
{
Image img = CreateImage();
if (PicIco.Image != null)
{
picEncode.Image = CombinImage(img, PicIco.Image);
}
else
{
MessageBox.Show("请选择ICO图片 !");
}
}
#region 生成带图片的二维码
///
/// 合并图片
///
///
///
///
/// 调用此函数后使此两种图片合并，类似相册，有个
/// 背景图，中间贴自己的目标图片
///
/// 粘贴的源图片
/// 粘贴的目标图片
public static Image CombinImage(Image imgBack, string destImg)
{
Image img = Image.FromFile(destImg);
return CombinImage(imgBack, img);
}
///
/// Resize图片
///
/// 原始Bitmap
/// 新的宽度
/// 新的高度
/// 保留着，暂时未用
/// 处理以后的图片
public static Image ResizeImage(Image bmp, int newW, int newH, int mode)
{
try
{
Image b = new Bitmap(newW, newH);
Graphics g = Graphics.FromImage(b);
// 插值算法的质量
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height),
GraphicsUnit.Pixel);
g.Dispose();
return b;
}
catch
{
return null;
}
}
#endregion
}
}
效果如下：
- QRCode.rar (5.2 MB)
- 下载次数: 36
- 查看图片附件