using System.Drawing;
|
|
namespace IStation.Win
|
{
|
public static class ImageExtend
|
{
|
/// <summary>
|
/// 将指定图片转化为指定尺寸,Image对象自带获取缩略图的方法GetThumbnailImage
|
/// </summary>
|
/// <param name="img"></param>
|
/// <param name="width"></param>
|
/// <param name="height"></param>
|
/// <returns></returns>
|
public static Image GetCustomizedImage(this Image img, int width, int height)
|
{
|
var bp = new Bitmap(width, height);
|
//程序使用设备的DPI创建图片，所以代码注释
|
//using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))
|
//{
|
// float dpiX = g.DpiX;
|
// float dpiY = g.DpiY;
|
// bp.SetResolution((int)dpiX, (int)dpiY);
|
//}
|
using (Graphics g = Graphics.FromImage(bp))
|
{
|
Rectangle resultRectangle = new Rectangle(0, 0, width, height);
|
Rectangle sourceRectangle = new Rectangle(0, 0, img.Width, img.Height);
|
g.DrawImage(img, resultRectangle, sourceRectangle, GraphicsUnit.Pixel);
|
}
|
return bp;
|
}
|
|
|
|
|
}
|
}
|
