How can I read a link from mysql databse???

[mnxford]

i have n0w pr0vided this c0de in the updater f0rm:

Code:

Imports MySql.Data.MySqlClient
Public Class updater
    Public conn As MySqlConnection

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        conn = New MySqlConnection(ServerString)
        Try
            conn.Open()
            Dim sqlquery As String = "SELECT vlink, dlink, ftpu, dtpp FROM updater"
            Dim data As MySqlDataReader
            Dim adapter As New MySqlDataAdapter
            Dim command As New MySqlCommand
            command.CommandText = sqlquery
            command.Connection = conn
            adapter.SelectCommand = command
            data = command.ExecuteReader
            Dim vlink As String = ""
            Dim dlink As String = ""
            Dim ftpu As String = ""
            Dim dtpp As String = ""
            While data.Read()
                If data.HasRows() Then
                    vlink = data(1).ToString
                    dlink = data(2).ToString
                    ftpu = data(3).ToString
                    dtpp = data(4).ToString
                End If
            End While
            UpdateVB1.checkforupdate(vlink, "0.0.9", dlink, ftpu, dtpp, True)
            data.Close()
            conn.Close()
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub
End Class

but it is saying an error in the msgbox....
The snapshot of the error and my sql database snapshot is given below:

Error:


Database:



Please help me why this problem occurs.....