不想说废话,直接源码拿去用。。。
///
/// 二维码管理
///
public class QRCoderHelper
{
///
/// 生成二维码图片
///
/// 内容文本
/// 二维码编码方式
/// 纠错码等级
/// 二维码版本号 0-40
/// 每个小方格的预设宽度(像素),正整数
/// 图片尺寸(像素),0表示不设置
/// 图片白边(像素),当size大于0时有效
///
///
public Image CreateQRCode(string Content, QRCodeEncoder.ENCODE_MODE QRCodeEncodeMode, QRCodeEncoder.ERROR_CORRECTION QRCodeErrorCorrect, int QRCodeVersion, int QRCodeScale, int size, int border, Color codeEyeColor)
{
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncodeMode;
qrCodeEncoder.QRCodeErrorCorrect = QRCodeErrorCorrect;
qrCodeEncoder.QRCodeScale = QRCodeScale;
qrCodeEncoder.QRCodeVersion = QRCodeVersion;
Image image = qrCodeEncoder.Encode(Content);
#region 根据设定的目标图片尺寸调整二维码QRCodeScale设置,并添加边框
if (size > 0)
{
//当设定目标图片尺寸大于生成的尺寸时,逐步增大方格尺寸
#region 当设定目标图片尺寸大于生成的尺寸时,逐步增大方格尺寸
while (image.Width < size)
{
qrCodeEncoder.QRCodeScale++;
Image imageNew = qrCodeEncoder.Encode(Content);
if (imageNew.Width < size)
{
image = new Bitmap(imageNew);
imageNew.Dispose();
imageNew = null;
}
else
{
qrCodeEncoder.QRCodeScale--; //新尺寸未采用,恢复最终使用的尺寸
imageNew.Dispose();
imageNew = null;
break;
}
}
#endregion
//当设定目标图片尺寸小于生成的尺寸时,逐步减小方格尺寸
#region 当设定目标图片尺寸小于生成的尺寸时,逐步减小方格尺寸
while (image.Width > size && qrCodeEncoder.QRCodeScale > 1)
{
qrCodeEncoder.QRCodeScale--;
Image imageNew = qrCodeEncoder.Encode(Content);
image = new Bitmap(imageNew);
imageNew.Dispose();
imageNew = null;
if (image.Width < size)
{
break;
}
}
#endregion
//根据参数设置二维码图片白边的最小宽度(按需缩小)
#region 根据参数设置二维码图片白边的最小宽度
if (image.Width <= size && border > 0)
{
while (image.Width <= size && size - image.Width < border * 2 && qrCodeEncoder.QRCodeScale > 1)
{
qrCodeEncoder.QRCodeScale--;
Image imageNew = qrCodeEncoder.Encode(Content);
image = new Bitmap(imageNew);
imageNew.Dispose();
imageNew = null;
}
}
#endregion
//已经确认二维码图像,为图像染色修饰
if (true)
{
//定位点方块边长
int beSize = qrCodeEncoder.QRCodeScale * 3;
int bep1_l = qrCodeEncoder.QRCodeScale * 2;
int bep1_t = qrCodeEncoder.QRCodeScale * 2;
int bep2_l = image.Width - qrCodeEncoder.QRCodeScale * 5 - 1;
int bep2_t = qrCodeEncoder.QRCodeScale * 2;
int bep3_l = qrCodeEncoder.QRCodeScale * 2;
int bep3_t = image.Height - qrCodeEncoder.QRCodeScale * 5 - 1;
int bep4_l = image.Width - qrCodeEncoder.QRCodeScale * 7 - 1;
int bep4_t = image.Height - qrCodeEncoder.QRCodeScale * 7 - 1;
Graphics graphic0 = Graphics.FromImage(image);
// Create solid brush.
SolidBrush blueBrush = new SolidBrush(codeEyeColor);
graphic0.FillRectangle(blueBrush, bep1_l, bep1_t, beSize, beSize);
graphic0.FillRectangle(blueBrush, bep2_l, bep2_t, beSize, beSize);
graphic0.FillRectangle(blueBrush, bep3_l, bep3_t, beSize, beSize);
graphic0.FillRectangle(blueBrush, bep4_l, bep4_t, qrCodeEncoder.QRCodeScale, qrCodeEncoder.QRCodeScale);
}
//当目标图片尺寸大于二维码尺寸时,将二维码绘制在目标尺寸白色画布的中心位置
#region 如果目标尺寸大于生成的图片尺寸,将二维码绘制在目标尺寸白色画布的中心位置
if (image.Width < size)
{
//新建空白绘图
Bitmap panel = new Bitmap(size, size);
Graphics graphic0 = Graphics.FromImage(panel);
int p_left = 0;
int p_top = 0;
if (image.Width <= size) //如果原图比目标形状宽
{
p_left = (size - image.Width) / 2;
}
if (image.Height <= size)
{
p_top = (size - image.Height) / 2;
}
//将生成的二维码图像粘贴至绘图的中心位置
graphic0.DrawImage(image, p_left, p_top, image.Width, image.Height);
image = new Bitmap(panel);
panel.Dispose();
panel = null;
graphic0.Dispose();
graphic0 = null;
}
#endregion
}
#endregion
return image;
}
}