GetDescendant(Type,Object[]) Method

Returns the element of the requested type that satisfies all of the passed in contexts

Syntax

Visual Basic

'Declaration
 
Public Overloads Overridable Function GetDescendant( _
   ByVal type As Type, _
   ByVal contexts() As Object _
) As UIElement

C#

public virtual UIElement GetDescendant( 
   Type type,
   object[] contexts
)

Parameters

type

System.TypeThe type (or base class type) of the UIElement to look for.

contexts

The contexts that must all match with the contexts of the element.

Return Value

Descendent element of this element that matches the specified type and contexts.

Example

This sample uses GetDescendant to get a child UIElement of the main control. Then hit-tests it.

Visual Basic

Imports System.Windows.Forms
Imports Infragistics.Win
Imports System.Diagnostics

Private Sub ultraProgressBar1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Handles MyBase.MouseDown
   
    ' Hit test for ProgressFillTextUIElement
    Dim fillTextUIElement As UIElement
 	fillTextUIElement = Me.ultraProgressBar1.UIElement.GetDescendant( _
		GetType(UltraWinProgressBar.ProgressFillTextUIElement))
    

    If Not fillTextUIElement Is Nothing Then
	  If fillTextUIElement.Contains(new Point(e.X,e.Y))
            Debug.WriteLine("Hit ProgressFillTextUIElement")
      End If
 		End If

End Sub

C#

using System.Windows.Forms;
	usingInfragistics.Win;
	usingSystem.Diagnostics;

private void ultraProgressBar1_MouseDown(object sender, MouseEventArgs e)
{

	// Hit test for ProgressFillTextUIElement

	UIElement fillTextUIElement = this.ultraProgressBar1.UIElement.GetDescendant(typeof(UltraWinProgressBar.ProgressFillTextUIElement));

	if(null != fillTextUIElement)
		if(fillTextUIElement.Contains(new Point(e.X,e.Y))
			Debug.WriteLine("Hit ProgressFillTextUIElement");

}

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