GroupDragOver Event

Occurs when a UltraExplorerBarGroup is dragged over a valid drop location.

Syntax

Visual Basic

'Declaration
 
Public Event GroupDragOver As GroupDragOverEventHandler

C#

public event GroupDragOverEventHandler GroupDragOver

Event Data

The event handler receives an argument of type GroupDragOverEventArgs containing data related to this event. The following GroupDragOverEventArgs properties provide information specific to this event.

Property	Description
AllowDrop	Returns/sets whether the UltraExplorerBarGroup can be dropped before/after the TargetGroup.
DragCursor	Returns/sets the cursor to be displayed while over the TargetGroup. If set to null a default cursor will be supplied.
Group	Returns the UltraExplorerBarGroup associated with the GroupDragOverEventArgs.
TargetGroup	Returns the UltraExplorerBarGroup that the UltraExplorerBarGroup will be dropped before or after.
TargetGroupRelativePosition	Returns an enumeration that indicates whether the UltraExplorerBarGroup will be dropped before or after the TargetGroup.
X	Returns the x-coordinate of the mouse position in screen coordinates.
Y	Returns the y-coordinate of the mouse position in screen coordinates.

Example

The following code shows how to process the GroupDragOver event.

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Visual Basic

Imports System.Diagnostics
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinExplorerBar

	Private Sub ultraExplorerBar1_GroupDragOver(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinExplorerBar.GroupDragOverEventArgs) Handles ultraExplorerBar1.GroupDragOver

		Dim beforeAfter As String

		If (e.TargetGroupRelativePosition = GroupDropPosition.After) Then
			beforeAfter = "after"
		Else
			beforeAfter = "before"
		End If

		Debug.WriteLine(String.Format("The group '{0}' is being dragged " + beforeAfter + " group '{1}'", e.Group.Text, e.TargetGroup))
		Debug.WriteLine(String.Format("The group is currently over point: ", New Point(e.X, e.Y).ToString()))


		' Don't allow the Group to be dropped if the target group has a key of "System"
		If e.TargetGroup.Key = "System" Then
			e.AllowDrop = False
			e.DragCursor = Cursors.No
		End If

	End Sub

C#

using System.Diagnostics;
using Infragistics.Win;
using Infragistics.Win.UltraWinExplorerBar;

		private void ultraExplorerBar1_GroupDragOver(object sender, Infragistics.Win.UltraWinExplorerBar.GroupDragOverEventArgs e)
		{
			string beforeAfter = (e.TargetGroupRelativePosition == GroupDropPosition.After) ? "after" : "before";

			Debug.WriteLine(string.Format("The group '{0}' is being dragged " + beforeAfter + " group '{1}'", e.Group.Text, e.TargetGroup));
			Debug.WriteLine(string.Format("The group is currently over point: ", new Point(e.X, e.Y).ToString()));


			// Don't allow the Group to be dropped if the target group has a key of "System"
			if (e.TargetGroup.Key == "System")
			{
				e.AllowDrop		= false;
				e.DragCursor	= Cursors.No;
			}
		}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2