Problem with Adding a new row to an existing datagrid

Hello,

The existing data table binded to a grid works When I enter the number of line items I need and click on a button that say make grid.  The problem is when click on Add Rows the extra row does not appear.  I think I am having a problem with the databind, because if I use, gvParts.DataBind(), the existing datagrid goes away.


Thank you in advance,

Existing Code used to create the data table to add records (WORKS)
**********************************************************
    Protected Sub btnMkGrid_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnMkGrid.Click
        Dim dt As New Data.DataTable
        'Dim tblReceiving As Table
        dt.Columns.Add(New Data.DataColumn("LineNO"))
        For i As Integer = 1 To tbItems.Text
            Dim dr As Data.DataRow
            dr = dt.NewRow
            dr("LineNO") = i
            dt.Rows.Add(dr)
        Next
        'Bind the DataTable to the DataGrid
        gvParts.DataSource = dt
        gvParts.DataBind()
 
    End Sub

****************************************************
Does Not Work
Protected Sub AddRow_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles AddRow.Click

        'Add the number of rows specified by "RowCount" to gvParts
        If (IsNumeric(RowCount.Text)) Then
            Dim i As Integer
            For i = 1 To CInt(RowCount.Text)

                'Adding a blank record to the dataset.
                Dim dt As New Data.DataTable
                dt.Columns.Add(New Data.DataColumn("LineNO"))
                Dim dr As Data.DataRow
                dr = dt.NewRow
                dr("LineNO") = i
                dt.Rows.Add(dr)

            Next
        End If
        'Rebind the grid to show the newly added row(s).
        'gvParts.DataBind()
        'DataBind()

    End Sub
Start Free Trial