How to download a file from gridview from ASP.Net?

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While googling, I saw a code which download a file from gridview. But It is not working.

What I want to do is :
When I click the download on the gridview. It will download the file into specific folder.

Try Dim filePath As String = "~\" + GridView1.Rows(GridView1.SelectedIndex).Cells(1).Text

            Dim fileName As String = Path.GetFileName(filePath)

            Dim stream As System.IO.Stream = Nothing

            stream = New FileStream(filePath, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read)
            Dim bytesToRead As Long = stream.Length
            Response.ContentType = "application/octet-stream"

            Response.AddHeader("content-Disposition", "attachment; filename=" & fileName)

            While bytesToRead > 0
                If Response.IsClientConnected Then
                    Dim buffer As Byte() = New [Byte](9999) {}
                    Dim length As Integer = stream.Read(buffer, 0, 10000)
                    Response.OutputStream.Write(buffer, 0, length)
                    Response.Flush()
                    bytesToRead = bytesToRead - length
                Else

                    bytesToRead = -1
                End If
            End While
   Catch ex As Exception
        End Try

Posted 7-Oct-14 17:40pm

NekoNao

Updated 7-Oct-14 19:12pm

v3

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Garth J Lancaster · Answer 1 · 2014-10-07T18:10:00

Solution 1

as long as you're using the latest MySQL Connector/Net version (*) (AND)
are not running on XP, It should be pretty much the same - except instead of creating a connection to MS SQL, you create a connection to the MYSQL database

None of the code you posted is relevant

(*) see here http://www.mysql.com/downloads/connector/net/[^]

Posted 7-Oct-14 18:10pm

Garth J Lancaster

Comments

NekoNao 8-Oct-14 1:04am

I mean in the code. How will I change it? I know how to use mysql connector.

Garth J Lancaster 8-Oct-14 1:17am

change the connection string - this shows you how to specify for MYSQL if you dont already know that http://www.connectionstrings.com/mysql/

Praneet Nadkar · Answer 2 · 2014-10-07T18:26:00

Hi,

I agree with Garth. Download the connector and then create a connection in web.config as

XML

<connectionStrings>
    <add name="ConnectionString" connectionString="Server=localhost;userid=userid;password=pwd;Database=Databasename" providerName="MySql.Data.MySqlClient"/>
</connectionStrings>

And then you can use this as

C#

MySqlConnection conn = new MySqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);

Bind the grid and then use your code.

Regards,
Praneet