Nested Datagrid Question

[NatGreen]

I am having a problem finding the child datagrid from the Parent update command. I would like to loop through the values to do some validation.

 Public Sub DataGrid1_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid1.UpdateCommand
        Try
            Dim dgTemp As DataGrid = (CType(source, DataGrid))
            DataGrid1.EditItemIndex = -1

            Dim dgtempSub As DataGrid = (CType(e.Item.FindControl("DataGrid2"), DataGrid))

            Dim blType As New Bl.Type(constr)

            Dim TempList As New DropDownList
            Dim TempValue As Integer
            TempList = e.Item.FindControl("ddlID")
            TempValue = CInt(TempList.SelectedValue)

            Dim dgItem As DataGridItem

            For Each dgItem In dgtempSub.Items
                If CInt(e.Item.Cells(3).Text) <> TempValue Then
                    blType.Insert(TempValue, ddlType.SelectedValue)
                End If
            Next

            BindData()

        Catch exc As Exception

        End Try
    End Sub

I get an error on:

Line: For Each dgItem In dgtempSub.Items
Error: "Object reference not set to an instance of an object"


Any help would be appreciated.

Thanks!
NatGreen

 

[ca8msm]

It may be because you've just declared a datagrid object, you've not actually instantiated it. e.g. you have wrote

Dim dgtempSub As DataGrid = (CType(e.Item.FindControl("DataGrid2"), DataGrid))

Try the following and see if that makes a difference:

Dim dgtempSub As New DataGrid = (CType(e.Item.FindControl("DataGrid2"), DataGrid))

----------------------------------------------------------------------

Need help finding an answer?

Try the search facilty (

http://www.tek-tips.com/search.cfm)

or read FAQ222-2244 on how to get better results.

 

[NatGreen]

Unfortunately that didn't work. Sees as if it can't find DataGrid2 reason.

Thanks.
NatGreen