Ask Learn
Preview
Ask Learn is an AI assistant that can answer questions, clarify concepts, and define terms using trusted Microsoft documentation.
Please sign in to use Ask Learn.
Sign inComponentChangedEventArgs.OldValue Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the old value of the changed member.
public:
property System::Object ^ OldValue { System::Object ^ get(); };C#
public object? OldValue { get; }C#
public object OldValue { get; }member this.OldValue : objPublic ReadOnly Property OldValue As ObjectThe old value of the changed member. This property can be null.
This property has meaning only if the member is not null.
Applies to
| Product | Versions |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |