HasError Property
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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
Available since 3.0
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