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BindingExpression.DataItem Property

Gets the binding source object that this BindingExpression uses.

Namespace: System.Windows.Data
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public Object DataItem { get; }
/** @property */
public Object get_DataItem ()

public function get DataItem () : Object

You cannot use this property in XAML.

Property Value

Returns the binding source object that this BindingExpression uses.

The following example shows the implementation of a Click event handler that uses the GetBindingExpression method to obtain the BindingExpression and that then calls the DataItem property to access the binding source object.

The TextBlock SavingsText is the binding target object and Text is the binding target property.

public void OnRentRaise(Object sender, RoutedEventArgs args)
{
  // Update bills
  System.Random random = new System.Random();
  double i = random.Next(10);
  BindingExpression bindingExpression =
    BindingOperations.GetBindingExpression(SavingsText, TextBlock.TextProperty);
  SDKSample.NetIncome sourceData = (SDKSample.NetIncome) bindingExpression.DataItem;
  sourceData.Rent = (int)((1 + i / 100) * (double)sourceData.Rent);
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0
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