Fileupload control help

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Hi all,

I am doing a sample registration page. I happened to use file upload control in 3 tier architecture. I googled it and checked got some understanding about it but still my queation is how to use in 3 tier. i mean the flow. and also in database. For example, What is the datatype for it, any help....appreciated.

Posted 9-Apr-13 21:21pm

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Dave963 · Accepted Answer · 2013-04-09T23:47:00

I agree with Kumar from madras, but I would just like to explain the flow a bit more...

Ok so usually you would not insert the file into the database itself, but rather have a folder in your website (in Kumar's example Uploads). Then you would have a field in your database table that references to the file (e.g. nvarchar(500))...

Example (C#) if you have a Database with a table UserFiles it would have a field FilePath...

C#

//The path of your folder inside your website
string virtualPath = "~/Uploads/";
//To upload a file you need a physical path to the folder
string physicalPath = Server.MapPath(virtualPath);
//This ensures that the file name is unique
string fileName = GUID.NewGuid().ToString();
//Grab the extension of the file
string extension = System.IO.Path.GetExtension(fileUpload.FileName);

//Ok now to actually upload the file to the server...
fileUpload.SaveAs(System.IO.Path.Combine(physicalPath,fileName + extension));

//Now to save the path to the database you have to call your method which inserts data into the table I'm just going to use a example class called UserFiles and a static method InsertFile that takes the filepath and inserts it into the table
UserFiles.InsertFile(virtualPath+fileName+extension);

I just typed this of the top of my head, but Intellisense will help you out if I made any mistakes.

Kumar from madras · Accepted Answer · 2013-04-09T21:50:00

HI JACK

PLS FIND THE BELOW SAMPLE CODE YOU CAN GET SOME IDEA

VB

Dim Dt As New DataTable
            Dim MyCommand As OleDbDataAdapter
            Dim filename As String = Me.FileUpload1.PostedFile.FileName
            Dim isvalid As Boolean = False
            Dim validfilename As String = ".PDF";
            Dim ext As String = System.IO.Path.GetExtension(filename)
            If ext <> "." & validfilename Then
                isvalid = False
                Return Dt
                Exit Function
            Else
            End If
            Dim savepath As String = Server.MapPath("~/Uploads/")
            Me.FileUpload1.PostedFile.SaveAs(savepath & System.IO.Path.GetFileName(filename))
            Dim fileupload As String = savepath
            Dim uploadfile As String = Server.MapPath("~/Uploads/") + System.IO.Path.GetFileName(filename)

Fileupload control help

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