AllowDragToGroup Client event

[Vikas]

Hi,

I am using AllowDragToGroup = true. If RadGrid contains thousands of record. so grouping take lot much time. I want to give a alert message and cancel Drap and drop operation if User tries to drag any column in such condition.

[Radoslav]

Hi Vikas,

You could try handling the OnCommand client event, show message and cancel the operation if the command name is GroupByColumn. For example:

<telerik:RadGrid runat="server" ShowGroupPanel="true" AutoGenerateColumns="false" AllowSorting="true" AllowPaging="true" ID="RadGrid1">
        <MasterTableView>
            <Columns>
                ...
            </Columns>
        </MasterTableView>
        <ClientSettings AllowDragToGroup="true">
            <ClientEvents OnCommand="OnCommand" />
        </ClientSettings>
    </telerik:RadGrid>

<telerik:RadCodeBlock runat="server">
        <script type="text/javascript">
            function OnCommand(sender, eventArgs)
            {
                if(eventArgs.get_commandName() == "GroupByColumn")
                {
                    alert("Message");
                    eventArgs.set_cancel(true);
                }
            }
        </script>
    </telerik:RadCodeBlock>

I hope this helps.

Greetings,
Radoslav
the Telerik team