Saving a file from the server on to user's PC.

I have a subprocedure where upon clicking on the link button on a webpage,the subprocedure will save data from a datagrid,write it to a text file and save it on to the user's PC.Does anyone know how do i go about doing this?
11/4/2004 1:02:13 AM 3721 articles. 0 followers. Follow

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Change the content type of the page sending the text to this:

Then use Response.Write(ALLTEXT)
11/5/2004 1:38:11 AM
Hi. I want to do similar things, seting the same content type, but want to change the name of the saved file.

For example, I have a page named "Download.aspx" which generates binary output and the user to be prompted to save the file with name "MyFile.dat". Is it possible?
Thank you in advance.
Best regards.
11/5/2004 2:46:01 PM
I think the header tag "Content-Disposition" will allow you to provide a default filename.

Check google.
11/7/2004 1:43:29 AM
Ok,my code uses this

strPhysicalPath = Server.MapPath(PathVirtual)
'exit if file does not exist
If Not System.IO.File.Exists(strPhysicalPath) _
Then Exit Sub
objFileInfo = New System.IO.FileInfo(strPhysicalPath)
'Add Headers to enable dialog display
Response.AddHeader("Content-Disposition", "attachment; filename=" & _
Response.AddHeader("Content-Length", objFileInfo.Length.ToString())
Response.ContentType = "application/octet-stream"
PathVirtual is a string which equals "../Records.txt".Sometimes,the download or save dialog box appears,but sometimes the following error appears.
System.UnauthorizedAccessException: Access to the path "D:\IncApps\Records.txt" is denied. at System.IO.__Error.WinIOError(Int32 errorCode, String str) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize) at System.IO.StreamWriter.CreateFile(String path, Boolean append) at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize) at System.IO.StreamWriter..ctor(String path, Boolean append) at System.IO.File.CreateText(String path) at uiNTUCLink.Report.WriteTextFile()
Can anyone tell me what is the error?
12/28/2004 12:59:40 PM
the problem is the "../" which is telling the MapPath function to map a path 1 directory above your webapplicaition's root.  This is a no-no.  you're not allowed to touch files outside your webapplication's directory.  try making PathVirtual = "Records.txt"
12/28/2004 2:25:06 PM
Check this : view post 833372

Bilal Hadiar, MCP, MCTS, MCPD, MCT
Microsoft MVP - Telerik MVP
2/20/2005 10:52:29 AM

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