截图就不用Api了吧？
我一般用这个

[C#] 纯文本查看 复制代码

public Bitmap ScreenShot()
{
	 //截屏
    var totalWidth = Screen.PrimaryScreen.Bounds.Width;
        //.AllScreens.Select(p => p.Bounds.Width).Aggregate((a, b) => a + b);//注释的这两句可以一次性截所有屏幕
    var totalHeight = Screen.PrimaryScreen.Bounds.Height;
        //.AllScreens.Select(p => p.Bounds.Height).Aggregate((a, b) => a + b);
    var img = new Bitmap(totalWidth, totalHeight);
    var grap = Graphics.FromImage(img);
    try
    {
    	//这句就是截图的核心
        grap.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(totalWidth, totalHeight));
        grap.Dispose();
        var snap = img.GetThumbnailImage(1024, 768, () => false, IntPtr.Zero);
        using (var ms = new MemoryStream())
        {
            snap.Save(ms, ImageFormat.Jpeg);
            sysInfo.ScreenSnapshot = Convert.ToBase64String(ms.ToArray());
        }
        img.Dispose();
    }
    catch (Exception ex)
    {

        grap.FillRectangle(new SolidBrush(Color.White), 0, 0, totalWidth, totalHeight);
        var font = new Font("宋体", 16, (FontStyle.Regular));
        var brush = Brushes.Blue;
        grap.DrawString(ex.ToString(), font, brush, 2, 2);
        using (var ms = new MemoryStream())
        {
            img.Save(ms, ImageFormat.Jpeg);
            sysInfo.ScreenSnapshot = Convert.ToBase64String(ms.ToArray());
        }
       
    }
    finally
    {
        img.Dispose();
        grap.Dispose();
    }

}

937658938 发表于 2014-6-18 20:53
表示不会使用有点看不懂。。。。

调用返回就可以了

表示不会使用有点看不懂。。。。

膜拜中……

我只是路过看看的。

如有修改，麻烦回传一份，谢谢