[Solved] Prevent Grid ungroup

[Cloud]

Hi all,

  I create a default grouping in a grid and don't want the user to remove that grouping, but they can still add another grouping after the default grouping. Is there any method that can prevent the user to remove the default grouping?

  Thx.

[Shinu]

Hello Cloud,

Attach clientside OnCommand event to grid and check for the CommandName and CommandArgument to cancel the event according to your requirement.

The example below shows preventing ungrouping of first grouping which is already set.

JavaScript:

    function OnCommand(sender, args) {
        if (args.get_commandName() == "UnGroupByExpression" && args.get_commandArgument() == "0:0") {
            args.set_cancel(true); // Cancel the event
        }
    }

-Shinu.

[Cloud]

Hi Shinu,

  Your method works but there is a problem after the user swap the grouping order.
  I got a solution on the server side event, but don't know if it can be prevented in client side. Thx.

   protected void Grid_GroupsChanging(object source, GridGroupsChangingEventArgs e)
    {
        if (e.Action == GridGroupsChangingAction.Ungroup)
        {
            if (e.Expression.GroupByFields[0].FieldName == "ColumnName")
                e.Canceled = true;
        }
    }