Multiple Group Header in RadGrid

[Sumith]

Hi Experts,

I have created rad grid with  multiple group header and added the check box in  first grouping header (BATCH_ID).So i want to do,
when i check the   check box in first grouping header then to be selected (highlighted) the grid items belong to second group header (ITEM_NAME)



Grouping  at Design Level

<GroupByExpressions>
<!-- First Grouping Header -->

                        <telerik:GridGroupByExpression>

                            <SelectFields>

                                <telerik:GridGroupByField FieldAlias="BATCH_ID" FieldName="BATCH_ID" HeaderValueSeparator=" : " />

                            </SelectFields>

                            <GroupByFields>

                                <telerik:GridGroupByField FieldName="BATCH_ID" SortOrder="Ascending" />

                            </GroupByFields>

                        </telerik:GridGroupByExpression>
<!-- Second Grouping Header -->
                        <telerik:GridGroupByExpression>


                            <SelectFields>

                                <telerik:GridGroupByField FieldAlias="Name" FieldName="EMP_DISPLAY_NAME" HeaderValueSeparator=" : " />

                            </SelectFields>

                            <GroupByFields>

                                <telerik:GridGroupByField FieldName="ITEM_NAME" SortOrder="Ascending" />
                            </GroupByFields>


                        </telerik:GridGroupByExpression
</GroupByExpressions>

         Create Header control at run time

Private Sub CreateHeaderControls(ByVal e As GridItemEventArgs)
        If TypeOf e.Item Is GridGroupHeaderItem Then
            Dim item As GridGroupHeaderItem = e.Item
            If IsNumeric(item.GroupIndex.ToString()) Then
                item.DataCell.Controls.Clear()
                Dim check As New CheckBox()
                check.AutoPostBack = True
                check.ID = "CheckAll"
                AddHandler check.CheckedChanged, AddressOf check_CheckedChanged
                item.DataCell.Controls.Add(check)
            End If
        End If
    End Sub

Thanks

[Angel Petrov]

Hello Sumith,

In order to implement such functionality you would have to use the GroupIndex. In the event handler you can do something like this:

Protected Sub check_CheckedChanged(sender As Object, e As System.EventArgs)
        Dim CheckBox = CType(sender, CheckBox)
        'Extract the groupIndex like shown below
        Dim groupIndex As String = DirectCast(CheckBox.NamingContainer, Telerik.Web.UI.GridGroupHeaderItem).GroupIndex
        'Iterate through the items in the grid and according to their GroupIndex select them
    End Sub

Please note that you would have implement logic that compares the GroupIndex of the item with the GroupIndex of the header and selects the items in the grid that match the criteria.

Kind regards,
Angel Petrov
the Telerik team