c# 控件截图的简单实例

首先选择保存图片的路径：

savefiledialog1.title = "保存";
            savefiledialog1.filter = "*.png|*.png";
            savefiledialog1.restoredirectory = true;
            if (savefiledialog1.showdialog() == dialogresult.ok)
            {
                timer1.enabled = true;
            }

其次保存控件图片（为了等待savedialoge控件完全关闭，使用timer延缓）：

timer1.enabled = false;
            bitmap bit = new bitmap(this.width, this.height);//实例化一个和窗体一样大的bitmap
            graphics g = graphics.fromimage(bit);
            g.compositingquality = compositingquality.highquality;//质量设为最高
            //g.copyfromscreen(this.left, this.top, 0, 0, new size(this.width, this.height));//保存整个窗体为图片
            g.copyfromscreen(charttype.pointtoscreen(point.empty), point.empty, charttype.size);//只保存某个控件
            bit.save(savefiledialog1.filename);//默认保存格式为png，保存成jpg格式质量不是很好
            if (file.exists(savefiledialog1.filename.tostring()))
            {
                messagebox.show("截图成功！");
                return;
            }