There are two ways to indicate that the grid need time to perform a specific operation. The first one is to show a waiting bar in front of RadVirtualGrid. This way the entire control will be unaccessible while the time consuming operation is executed. The second one is to show a waiting icon in the row header. This way you can indicate that a the data for a specific row is still not loaded.
While this indicator is shown the entire grid is disabled. It is useful when the initial data loading requires more time.
The following snippet shows how you can show/hide the waiting bar:
radVirtualGrid1.MasterViewInfo.IsWaiting = true; radVirtualGrid1.MasterViewInfo.IsWaiting = false;
radVirtualGrid1.MasterViewInfo.IsWaiting = True radVirtualGrid1.MasterViewInfo.IsWaiting = False
The waiting icon can be shown in each row header. With it you can indicate that the row data is still not loaded.
The following snippet shows how you can show/hide the waiting icon: