File Upload routine & File download routine

Two questions. For both, with codebehind.

#1. Given the following (1) a web form with an upload file control, (2) a string variable SocialSecurityVar that holds a 9-digit social security number that is fetched from the session state, and (3) a string variable ExtVar with no initial value
how would i code a routine as follows:
1. user clicks browse
2. user selcts a file to upload to server, clicks ok
3. routine reads string variable SocialSecurityVar (say from form or session state) and in a pre-existing direcotry named \DOCS searches for the subdirectory named \DOCS\XXXXXXXXX where XXXXXXXXXX is the string in the SocSecVar variable. If there is no Subdirectory XXXXXXXXX in DOCS, routine creates subdirectory DOCS\XXXXXXXXX where XXXXXXXXX is the string in SocialSecurityVar
4. Server reads the extension from the filename and stores it in string variable ExtVar
5. Server writes the uploaded file to the DOCS\XXXXXXXXXX\ directory to a file named XXXXXXXXX.nnn where XXXXXXXXX is the string in SocSecVar and nnn is the string in ExtVar

Example 1: session stored social security number 123456789. User clicks browse. Selects resume.doc to upload. Routine creates folder DOCS\123456789\ and uploads resume.doc to folder and names the file 123456789.doc

Example 2: session stored social security number 987654321. User clicks browse. Selects resume.doc to upload. Routine finds folder DOCS\987654321\ exists and uploads resume.doc to folder and names the file 987654321.doc, overwriting any existing file of that name.

Question 2. I have a button named btnDownload. Given String variable SocialSecurityVar how would i code a routine that when button is clicked

1. searches in the \DOCS\ direcotry on the server for a subdirectory with name = string in SocialSeciurityVar
2. If direcory exsists, server finds the newest file in that directory and opens a download that file dialog on the users browser.


Example 1: sessin stored social security number is 123456789. User clicks Download. Routine searches for and finds a directory DOCS\123456789\. Routine determines 123456789.pdf is the newest file. Opens Download 123456789.pdf? dialog.


2/11/2008 10:59:04 PM 93655 articles. 6 followers. Follow

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Hi Steve,

I will try to help you here.

Here is the solution for your upload problem:


Imports System.IO

Partial Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

        'Loading SSN in session
        Session("SSN") = "123456789"

        If FileUpload1.HasFile Then
            'If directory exist upload the file
            If (Directory.Exists("D:\" & Convert.ToString(Session("SSN")))) Then
                FileUpload1.SaveAs("D:\" & Convert.ToString(Session("SSN")) & "\" & FileUpload1.FileName)

                'Otherwise, create the directory and upload the file
                Directory.CreateDirectory("D:\" & Convert.ToString(Session("SSN")))
                FileUpload1.SaveAs("D:\" & Convert.ToString(Session("SSN")) & "\" & FileUpload1.FileName)
            End If

            'Uncomment this portion to rename the file according to SSN. You might need to change the path.
            'Dim TheFile As FileInfo = New FileInfo(MapPath(".") & "\" & FileUpload1.FileName)
            'If TheFile.Exists Then
            '    File.Move(MapPath(".") & "\" & FileUpload1.FileName, MapPath(".") & "\" & Convert.ToString(Session("SSN")))
            'End If

        End If

    End Sub

I'm still working on the download portion. I will write back tomorrow. Hang in there. 



Don't forget to click "Mark as Answer" on the post that helped you.
2/12/2008 1:13:08 AM

 amensi, thanks man. I am going to study what you wrote and figure out exactly what you are doing here. I've been trying to do this for a week. finally some clarity. priceless! 



2/12/2008 1:53:28 AM

No problem. If you have any questions, don't hesitate to ask.

Don't forget to click "Mark as Answer" on the post that helped you.
2/12/2008 3:59:56 AM

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