MultiBindingExpression.HasError Property

Returns a value that indicates whether any of the inner Binding objects or the MultiBinding itself has a failing validation rule.

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

public override bool HasError { get; }

Property Value

Type: System.Boolean
true if at least one of the inner Binding objects or the MultiBinding itself has a failing validation rule; otherwise, false.

You can set validation rules on both the MultiBinding object and the individual Binding objects in the MultiBinding object. The binding engine evaluates the ValidationRules on the MultiBinding object when a value moves from the binding target property to the IMultiValueConverter object (multi-value converter). After that, when a value moves from the converter to the binding source property of an individual binding, the binding engine evaluates the ValidationRules on that Binding object.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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

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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