c#抓屏技术

先是给大家一个类:
class ScreenShot
{
public static void CaptureImage(Point SourcePoint, Point DestinationPoint, Rectangle SelectionRectangle, string FilePath)
{
using (Bitmap bitmap = new Bitmap(SelectionRectangle.Width, SelectionRectangle.Height))
{
using (Graphics g = Graphics.FromImage(bitmap))
{
g.CopyFromScreen(SourcePoint, DestinationPoint, SelectionRectangle.Size);
}
bitmap.Save(FilePath, ImageFormat.Bmp);
}
}
}
所需添加引用如下:
using System;
using System.Drawing;
using System.Drawing.Imaging;
调用方法:
private void button1_Click(object sender, EventArgs e)
{
saveFileDialog1.DefaultExt = "bmp";
saveFileDialog1.Filter = "bmp files (*.bmp)|*.bmp";
saveFileDialog1.Title = "导出地图为...";
saveFileDialog1.ShowDialog();
if (saveFileDialog1.FileName.Length > 0)
{
ScreenPath = saveFileDialog1.FileName;
}
else
{
return;
}
this.Refresh();
//3个参数：获得控件所在屏幕坐标，目标坐标点为(0,0)，获得控件大小。
ScreenShot.CaptureImage(axMapControl1.PointToScreen(Point.Empty), Point.Empty, new Rectangle(axMapControl1.Location, axMapControl1.Size), ScreenPath);
}

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