Inserting Record using Data Adepter.Update() Command

Question

I created a Table in SQL Server 2005 and now i am creating an application to directly manipulate this table so i wrote this code and the commented part works successfully but part before it is not running it gives following Exception

"Update requires a valid UpdateCommand when passed DataRow collection with modified rows."

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Private Sub Button4_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button4.Click
        Dim dr As SqlDataAdapter = New SqlDataAdapter("SELECT * FROM dbo.Categories", SqlCon)
        dr.InsertCommand = New SqlCommand("INSERT INTO dbo.Categories VALUES('@CategoryName',@CategoryID)", SqlCon)
        dr.InsertCommand.Parameters.Add("@CategoryName", SqlDbType.VarChar, 15, "CategoryName")
        dr.InsertCommand.Parameters.Add("@CategoryID", SqlDbType.Int, 6, "CategoryID")
        Dim DT As New DataTable
        dr.Fill(DT)
        Dim rw As DataRow = DT.Rows(0)
        rw(0) = TextBox2.Text
        rw(1) = TextBox1.Text
        dr.Update(DT)


        'Dim cmd As SqlCommand = New SqlCommand("INSERT INTO dbo.Categories(CategoryName,CategoryID) " + "VALUES('" + TextBox2.Text + "'," + TextBox1.Text + ")", SqlCon)
        'cmd.Parameters.Add("@CategoryName", SqlDbType.VarChar, 15, "CategoryName")
        'cmd.Parameters.Add("@CategoryID", SqlDbType.Int, 6, "CategoryID")
        'cmd.ExecuteNonQuery()
End Sub

Answer 1

yes it can i have gotten it to work.the only problem i came across is that the folder where you reference your dll must contain the xml file that contains the information about the DLL. Try making the XML file the same name as the assembly