Asp. NET to download files through dialog box

1 to download or open the file by probing the dialog box

2 allow a specific application to open a file through a custom header

Method of Use: Response.TransmitFile ()

Routines:

以下是引用片段：
Response.ContentType=“image/jpeg”;
Response.AppendHeader(“Content-Disposition”,”attachment;filename=SailBig.jpg”);
Response.TransmitFile(Server.MapPath(“~/images/sailbig.jpg”));

流传送所使用的方法：Response.BinaryWrite()和Response.OutputStream()

Routines:

以下是引用片段：
Bitmapbmp=wwWebUtils.CornerImage(backcolor,color,c,Radius,Height,Width);
Response.ContentType=“image/jpeg”;
Response.AppendHeader(“Content-Disposition”,”attenment;filename=LeftCorner.jpg”);
bmp.Save(Response.OutputStream,ImageFormat.Jpeg);

Reference URL for the content Type (MIME type):

Http://www.w3.org/TR/html4/types.html (Overview)

http://www.iana.org/assignments/media-types/(Detailed list)

FAQ Solution:

1. Error occurred loading image from resource file or database blob field

Error content: A generic error occurred in GDI +

Code:

以下是引用片段：
Bitmapbmp=this.GetGlobalResourceObject(“Resource”,”_BitMap”)asBitmap;
Response.ContentType=”image/jpeg”;
bmp.Save(Response.OutputStream,ImageFormat.Jpeg);
Response.End();

Workaround, and then create an instance to receive the image content that is read from the resource file or from the Database Blob field.

Solution Code:

以下是引用片段：
　　Bitmap bmp = this.GetGlobalResourceObject(“Resource”, ”_BitMap”) as Bitmap;
Bitmap temp = new Bitmap(bmp);
　　Response.ContentType = “image/jpeg”;
Temp.Save(Response.OutputStream, ImageFormat.Jpeg);
　　bmp.Dispose();
temp.Dispose();
　　Response.End();