How to add nested SummaryRowItem to self-referencing hierarchy model in the GridView/self-referencing WinForms demo sample?

[[e-mail]]

Version 2010.3
In the GridView/self-referencing WinForms VB.NET demo sample,how to:
1.To get sum(Size) of "RadControls for Winforms", "RadControls for Silverlight", "RadControls for WPF" and "RadControls for ASP.NET AJAX", then write the Sum(Size) to Size cell of "Telerik RadControls".
2.To get sum(Size) of "bin" and "READEME.txt", then write the Sum(Size) to Size cell of "Visual Studio 2010".
3.To get sum(Size) of "Visual Studio 2010" and "Telerik RadControls" ,then write the Sum(Size) to Size cell of "Program Files".
4.And so on...
5.When any Size cell of a child changed,an event trigger and update it's parent /grantparent Size cell.

Best Regards.

[Richard Slade]

Hello,

I'm afraid I don't understand your issue or requirement. Please could you provide a sample, further details and any supporting screenshots that may help me to assist you.

Thanks
Richard

[[e-mail]]

Here's a screenshot of it.After changing "RadControls for Winforms" Size from  "101MB"  to "200MB","Telerik RadControls" Size and "Program Files" Size change by adding "99MB".
Best Regards.

[Alexander]

Hello,

The FolderTree example of RadGridView is created to demonstrate the self-reference hierarchy functionality of the control. Its data is created in the example and the Size values are quite random. When you create a self-reference hierarchy with real data, its values will be consistent.

I hope it helps.

Best regards,
Alexander
the Telerik team

[[e-mail]]

" The FolderTree example of RadGridView is created to demonstrate the self-reference hierarchy functionality of the control. Its data is created in the example and the Size values are quite random. When you create a self-reference hierarchy with real data, its values will be consistent."
I know that.What I really want is a scenario enhancing this example:
1.Auto-caculate Size summary(named as 'Sum1') of  "RadControls for Winforms", "RadControls for Silverlight", "RadControls for WPF" and "RadControls for ASP.NET AJAX"(children rows),then auto-update Size value of "RadControls for Winforms"(parent row) with 'Sum1' value .
2.....
3.Auto-caculate Size summary(named as 'Sum2') of  "Visual Studio 2010" and "Telerik RadControls"(children rows),then auto-update Size value of "Program Files"(parent row) with 'Sum2' value.
4.....

Best Regards.

[Alexander]

Hello,

Currently, summary rows can be added only on root level of a self-reference hierarchy. To achieve your scenario, you can calculate the sum of the child rows sizes and add this summary to the text of the parent row 'Size' cell. In the 'FolderTree' example you can add the following code to the CellFormatting event handler:

GridDataCellElement dataCell = e.CellElement as GridDataCellElement;

if (dataCell.ColumnInfo.Name == "Size" && dataCell.RowInfo.ChildRows.Count > 0)
{
    int totalSize = 0;
    foreach (GridViewRowInfo childRow in dataCell.RowInfo.ChildRows)
    {
        totalSize += (int)childRow.Cells["Size"].Value;
    }
    dataCell.Text = dataCell.Value + " MB; TotalSize: " + totalSize + " MB";
}

I hope it helps.

Best regards,
Alexander
the Telerik team