Accessing the parent item on _RowDrop()

[Paul]

I have a RadGrid with a nested table, as outlined below:

<telerik:RadGrid ID="grid1" Skin="Default" runat="server" Visible="False" AutoGenerateColumns="False"

ShowHeader="False" Width="400px" OnItemDataBound="grid1_ItemDataBound" AllowMultiRowSelection="True"

OnRowDrop="grid1_RowDrop" OnDeleteCommand="grid1_DeleteCommand" OnPreRender="grid1_PreRender">

<MasterTableView DataKeyNames="AnswerID">

<DetailTables>

<telerik:GridTableView Name="grid2">

<Columns>

<telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="AnswerLabel"

ReadOnly="True" Reorderable="False" Resizable="False" ShowSortIcon="False" UniqueName="colAnswerLabel">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="QuestionID" UniqueName="colQuestionID" Visible="False">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="AnswerID" UniqueName="colAnswerID" Visible="False">

</telerik:GridBoundColumn>

</Columns>

<RowIndicatorColumn>

<HeaderStyle Width="20px" />

</RowIndicatorColumn>

<ExpandCollapseColumn>

<HeaderStyle Width="20px" />

</ExpandCollapseColumn>

</telerik:GridTableView>

</DetailTables>

<Columns>

<telerik:GridBoundColumn AllowFiltering="False" AllowSorting="False" DataField="AnswerLabel"

ReadOnly="True" Reorderable="False" Resizable="False" ShowSortIcon="False" UniqueName="colAnswerLabel">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="QuestionID" UniqueName="colQuestionID" Visible="False">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="AnswerID" UniqueName="colAnswerID" Visible="False">

</telerik:GridBoundColumn>

</Columns>

<RowIndicatorColumn>

<HeaderStyle Width="20px" />

</RowIndicatorColumn>

<ExpandCollapseColumn>

<HeaderStyle Width="20px" />

</ExpandCollapseColumn>

</MasterTableView>

<ClientSettings AllowRowsDragDrop="True">

<Selecting AllowRowSelect="True" />

</ClientSettings>

</telerik:RadGrid>

Is there a way to access the colAnswerID column of the parent row from within grid1_RowDrop(object sender, GridDragDropEventArgs e)? 

For example, if I'm dragging "222" between "111" and "333" I'd want the colAnswerID for "ABC".

 +ABC
 |- 111
 |- 333
 |- 444
 +DEF
 |- 555
 GHI
 222

Thanks.

- Paul Ott

[Paul]

I still can't figure this out.

[Sebastian]

Hello Paul,

Consider referencing the e.DestinationTableView object from within the OnRowDrop server-side handler of the grid which points to the destination table in which the dragged item has been dropped (see the description of this demo for more details).

Then you can reference the ParentItem for this destination table (which will be the parent data item) and extract its AnswerID value either using the getDataKeyValue("AnswerID") method or referencing the value from colAnswerID column using its unique name.

Kind regards,
Sebastian
the Telerik team

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[Paul]

Sebastian,

I've tried this, but unfortunately the e.DestinationTableView.ParentItem is null in the RowDrop. After some messing around with it, I found the solution to be:

e.DestDataItem.OwnerTableView.ParentItem.GetDataKeyValue("AnswerId")

Thanks for the help!

- Paul