KGy SOFT Core Libraries Help
Property
If the specified event args is a PropertyChangedExtendedEventArgs instance, then gets the property value before the change.
Definition
Namespace: KGySoft.ComponentModel
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 8.0.0
if the specified event args is a PropertyChangedExtendedEventArgs instance; otherwise, .
Assembly: KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 8.0.0
C#
public static bool TryGetOldPropertyValue(
this PropertyChangedEventArgs args,
out Object?? oldValue
)VB
<ExtensionAttribute>
Public Shared Function TryGetOldPropertyValue (
args As PropertyChangedEventArgs,
<OutAttribute> ByRef oldValue As Object
) As BooleanC++
public:
[ExtensionAttribute]
static bool TryGetOldPropertyValue(
PropertyChangedEventArgs^ args,
[OutAttribute] Object^% oldValue
)F#
[<ExtensionAttribute>]
static member TryGetOldPropertyValue :
args : PropertyChangedEventArgs *
oldValue : Object byref -> bool Parameters
- args PropertyChangedEventArgs
- The PropertyChangedEventArgs instance containing the event data.
- oldValue Object
- If the specified event args is a PropertyChangedExtendedEventArgs instance, then the property value before the change; otherwise, .
Return Value
Booleanif the specified event args is a PropertyChangedExtendedEventArgs instance; otherwise, .