ASP.NET中通过对话框方式下载文件

Bitmap bmp = this.GetGlobalResourceObject( “Resource”, “_BitMap”) as Bitmap;
Bitmap temp = new Bitmap(bmp);

MemoryStream ms = new MemoryStream();

Response.ContentType=”image/png”;
temp.Save(ms, System.Drawing.Imaging, ImageFormat.Png);
Ms.WriteTo(Response.OutputStream);

bmp.Dispose();
temp.Dispose();

Response.End();

Response.ContentType=”image/png”;
Response.Buffer = false;
Response.Clear();

MemoryStream stream1 = new MemoryStream();

// DrawPie method return an Image
This.DrawPie(table1).Save(stream1,ImageFormat.Png);
Response.BinaryWrite(stream1.ToArray());

Base.OnPreInit(e);