DependencyProperty.IsValidType(Object) Method
Definition
Important
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Determines whether a specified value is acceptable for this dependency property's type, as checked against the property type provided in the original dependency property registration.
public:
bool IsValidType(System::Object ^ value);public bool IsValidType (object value);member this.IsValidType : obj -> boolPublic Function IsValidType (value As Object) As BooleanParameters
- value
- Object
The value to check.
Returns
true if the specified value is the registered property type or an acceptable derived type; otherwise, false.
Examples
The following example uses IsValidType as a check before calling SetValue on the dependency property.
void TrySetValue(DependencyObject target, DependencyProperty dp, object providedValue) {
if (dp.IsValidType(providedValue))
{
target.SetValue(dp, providedValue);
}
}
Private Sub TrySetValue(ByVal target As DependencyObject, ByVal dp As DependencyProperty, ByVal providedValue As Object)
If dp.IsValidType(providedValue) Then
target.SetValue(dp, providedValue)
End If
End Sub
Remarks
A value of null is a valid type for reference type dependency properties, or for a Nullable<T> dependency property, and would return true for these cases. In cases where the dependency property is neither a reference nor a Nullable<T> type, IsValidType will return false for a null value rather than raise an exception.
