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Visual Studio 2022 - working with 'CS1061' scenarios When Extending a Static Class with Partial Methods

👀 Views: 41 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-13
visual-studio csharp static-class C#

Quick question that's been bugging me - I'm currently working on a project in Visual Studio 2022 and I've run into a compilation scenario when trying to use partial methods to extend a static class. I've defined a static class named `MyStaticClass` with a partial method declaration, but when I attempt to implement that method in another file, I receive the behavior: `CS1061: 'MyStaticClass' does not contain a definition for 'MyPartialMethod' and no accessible extension method 'MyPartialMethod' accepting a first argument of type 'MyStaticClass' could be found`. Here's how I've structured my code: In `MyStaticClass.cs`, I have: ```csharp public static class MyStaticClass { partial void MyPartialMethod(); public static void Execute() { // Some implementation here MyPartialMethod(); } } ``` And in `MyStaticClassExtensions.cs`, I tried to implement the partial method like this: ```csharp public static class MyStaticClassExtensions { partial void MyPartialMethod() { // Implementation of the partial method } } ``` I have also verified that both files are part of the same assembly and that there are no access modifiers interfering with visibility. In my understanding, partial methods are supposed to work across partial class definitions, so this should compile successfully. I've tried cleaning and rebuilding the solution, checking for any namespace issues, and ensuring that both files are included in the same project. However, the behavior continues. Can someone point me in the right direction or suggest what I might be doing wrong? Any ideas what could be causing this? My development environment is Windows 10. Any examples would be super helpful.