Condividi tramite


DomainPropertyValueHandler<TElement, TValue>.OnValueChanging Method

Alerts listeners when a property value is about to change.

Namespace:  Microsoft.VisualStudio.Modeling
Assembly:  Microsoft.VisualStudio.Modeling.Sdk.10.0 (in Microsoft.VisualStudio.Modeling.Sdk.10.0.dll)

Syntax

'Dichiarazione
Protected Overridable Sub OnValueChanging ( _
    element As TElement, _
    oldValue As TValue, _
    newValue As TValue _
)
protected virtual void OnValueChanging(
    TElement element,
    TValue oldValue,
    TValue newValue
)
protected:
virtual void OnValueChanging(
    TElement element, 
    TValue oldValue, 
    TValue newValue
)
abstract OnValueChanging : 
        element:'TElement * 
        oldValue:'TValue * 
        newValue:'TValue -> unit 
override OnValueChanging : 
        element:'TElement * 
        oldValue:'TValue * 
        newValue:'TValue -> unit 
protected function OnValueChanging(
    element : TElement, 
    oldValue : TValue, 
    newValue : TValue
)

Parameters

  • oldValue
    Type: TValue
    The current value of the property.
  • newValue
    Type: TValue
    The new value of the property.

.NET Framework Security

See Also

Reference

DomainPropertyValueHandler<TElement, TValue> Class

Microsoft.VisualStudio.Modeling Namespace