vb.net中怎么将chart中的图表复制到剪贴板和另存为成图片文件？求大神帮助

private void Save_Click(object sender, System.EventArgs e) { // Create a new save file dialog SaveFileDialog saveFileDialog1 = new SaveFileDialog(); // Sets the current file name filter string, which determines // the choices that appear in the "Save as file type" or // "Files of type" box in the dialog box. saveFileDialog1.Filter = "Bitmap (*.bmp)|*.bmp|JPEG (*.jpg)|*.jpg|EMF (*.emf)|*.emf|PNG (*.png)|*.png|SVG (*.svg)|*.svg|GIF (*.gif)|*.gif|TIFF (*.tif)|*.tif"; saveFileDialog1.FilterIndex = 2 ; saveFileDialog1.RestoreDirectory = true ; // Set image file format if(saveFileDialog1.ShowDialog() == DialogResult.OK) { ChartImageFormat format = ChartImageFormat.Bmp; if( saveFileDialog1.FileName.EndsWith( "bmp" ) ) { format = ChartImageFormat.Bmp; } else if( saveFileDialog1.FileName.EndsWith( "jpg" ) ) { format = ChartImageFormat.Jpeg; } else if( saveFileDialog1.FileName.EndsWith( "emf" ) ) { format = ChartImageFormat.Emf; } else if( saveFileDialog1.FileName.EndsWith( "gif" ) ) { format = ChartImageFormat.Gif; } else if( saveFileDialog1.FileName.EndsWith( "png" ) ) { format = ChartImageFormat.Png; } else if( saveFileDialog1.FileName.EndsWith( "tif" ) ) { format = ChartImageFormat.Tiff; } else if( saveFileDialog1.FileName.EndsWith( "svg" ) ) { format = ChartImageFormat.Svg; } // Save image Chart1.SaveImage( saveFileDialog1.FileName, format ); } }