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BindingExpression.DataItem Property

.NET Framework 4.5

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Gets the binding source object that this BindingExpression uses.

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

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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

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8 Release Preview, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 SP2, Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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