Method GetValue
GetValue(object, string)
Find the binding that uses the given item and property, and return the value appropriate to the current validation step.
public object GetValue(object item, string propertyName)Parameters
Returns
Exceptions
- InvalidOperationException
the binding group does not contain a binding corresponding to the given item and property.
- ValueUnavailableException
the value is not available. This could be because an earlier validation rule deemed the value invalid, or because the value could not be produced for some reason, such as conversion failure.