GridGroupingControl - Multi-Rows select and Right click problem.

[Badri Rajani Kanth]

Hi All,

1. I have a GGC. When select multiple rows using keyboard/mouse and right click, I am only left with the last selected rows. All other rows are de-selected. I want to have all the selected rows as I want to do combined operation.

2. Also, without holding the shift key, if I just hold the left mouse button and move the mouse on the grid, it selects multiple rows. How to avoid this?

Rgds
Rajani Kanth

[Administrator]

1) Setting these properties:

gridGroupingControl1.TableOptions.AllowSelection = GridSelectionFlags.None;
gridGroupingControl1.TableOptions.ListBoxSelectionMode = SelectionMode.MultiExtended; //or MultiSimple
gridGroupingControl1.TableModel.Options.SelectCellsMouseButtonsMask = MouseButtons.Left;

should prevent the right click from affecting the selections.

2) Not selecting records as you drag the leftmousedown is not one of the standard SelectionModes found in a ListBox. So, you will have to handle an event to try to implement this behavior. Here is a try at this with the canceling the SelectedRecordChanging event when you do not want the record selected. It may need to be further tweaked to get the exact behavior you want, but this is the event you will likely used to get it.

private SelectedRecord firstSelectedRecord = null;
private void gridGroupingControl1_SelectedRecordsChanging(object sender, SelectedRecordsChangedEventArgs e)
{
	if( e.Action == SelectedRecordsChangedType.Added 
		&&  0 == (Control.ModifierKeys & Keys.Shift))
	{
		if(firstSelectedRecord != null && firstSelectedRecord != e.SelectedRecord)
		{
			e.Cancel = true;
			return;
		}
	}
	firstSelectedRecord = e.SelectedRecord;
}