How to select a item on rightclick using devexpress ListboxControl

To select a item on rightclick using devexpress ListboxControl you need to use the MouseDown Event.
See the samples below.

Sample C#

private void listBoxControl1_MouseDown(object sender, MouseEventArgs e)
{
	listBoxControl1.SelectedIndex = listBoxControl1.IndexFromPoint(new Point(e.X, e.Y));
}

Sample VB.NET

Private Sub listBoxControl1_MouseDown(sender As Object, e As MouseEventArgs)
	listBoxControl1.SelectedIndex = listBoxControl1.IndexFromPoint(New Point(e.X, e.Y))
End Sub

How to use Doubleclick in Devexpress Gridview in C# and VB.NET

Using doubleclick events in the Devexpress Gridview Control is a simple task.
There are 2 different ways of doing this. The variant you choose, depends on the Gridview’s gridView.OptionsBehavior.Editable property. If this property is set to false you have to use the DoubleClick event. If this property is set to true you have to use the ShownEditor and HiddenEditor event. I will also give an example on how to combine both methods, if you are using both (true and false) on the gridView.OptionsBehavior.Editable.

Samples

OptionsBehavior.Editable set to False

C# Sample

VB.NET Sample

OptionsBehavior.Editable set to True

When inplace editing is enabled, a click on a grid cell activates the inplace editor (rowedit).
All mouse events will be sent to the editor and cannot be handled by the GridView directly. The DoubleClick event handler is no longer being executed.

C# Sample

VB.NET Sample

OptionsBehavior.Editable set to True or False at Runtime

C# Sample

VB.NET Sample

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Related links:

How to use Node Doubleclick in Devexpress Treelist in C# and VB.NET

How to use Node Doubleclick in Devexpress Treelist in C# and VB.NET you can use the following snippet.

Sample C#

private void treeList1_DoubleClick(object sender, EventArgs e) 
{
	var treeList = sender as TreeList;
	var hitInfo = treeList.CalcHitInfo(treeList.PointToClient(MousePosition));
	if(hitInfo.Node != null) 
	{
		//do something
	}
}

Sample VB.NET

Private Sub treeList1_DoubleClick(sender As Object, e As EventArgs)
	Dim treeList = TryCast(sender, TreeList)
	Dim hitInfo = treeList.CalcHitInfo(treeList.PointToClient(MousePosition))
			'do something
	If hitInfo.Node IsNot Nothing Then
	End If
End Sub