BindingExpression.DataItem Property


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Gets the binding source object that this BindingExpression uses.

Namespace:   System.Windows.Data
Assembly:  PresentationFramework (in PresentationFramework.dll)

public object DataItem { get; }

Property Value

Type: System.Object

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 then calls the DataItem property to access the binding source object.

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

private 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);

.NET Framework
Available since 3.0
Available since 3.0
Windows Phone Silverlight
Available since 7.0
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