VB.NET export results of sql query to textfile

Posted on 2008-06-12
Last Modified: 2008-06-12
Hey all,
I've a question about VB.NET and SQL Querys.
My problem of the code below is, how do I write the results of the Query into a textfile?!
The SQL connection fine....but I don't know how can i write it to a textfile (.txt)

Private Sub SqlCon()
        Dim fso = CreateObject("Scripting.FileSystemObject")
        Dim MyFile = fso.CreateTextFile("\\FILESERVER\Logs\" & Date.Today & "-" & TimeOfDay.Hour & "-" & TimeOfDay.Minute & ".txt", True)
        Dim connString As String = "CONNECTION STRING HERE"
        Dim conn As New SqlConnection(connString)
        Dim cmdString As String = "SELECT * FROM BLABLA"
        Dim cmd As New SqlCommand(cmdString, conn)
        Dim reader As SqlDataReader = cmd.ExecuteReader()

        MyFile.Writeline(reader.Item("COLUMN HERE")) 'wie mach ich das?
    End Sub

Question by:sql_insider
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Expert Comment

ID: 21770418
You must loop through the reader and call Read(). See code (not quite sure of the VB syntax)
While reader.Read()
   MyFile.Writeline(reader.Item("COLUMN HERE")) 
End While

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Author Comment

ID: 21770562
Hey molku....
my code:

        Dim reader As SqlDataReader = cmd.ExecuteReader()
        While reader.Read()
        End While

But it doesn't work...I will get an error:
"Unhandeld exception has occurred in....
Type mismathc. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH))"


Accepted Solution

molku earned 50 total points
ID: 21770597
reader.Item returns an Object. What happens if you do this?

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Author Comment

ID: 21770637
Hey molku.....
thank you very works fine.......great.........

Thanks again


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