👀 Views: 54 💬 Answers: 1 📅 Created: 2025-07-22

c# reflection nullreferenceexception C#

I keep running into I'm working with a `NullReferenceException` when accessing properties of an object that is being dynamically generated at runtime using reflection in C#... The object is instantiated through an external assembly that I load using `Assembly.LoadFrom()`. Specifically, I'm trying to invoke a method and then access one of its properties, but it throws an exception at runtime, indicating that the property is null. Here's the relevant code snippet: ```csharp var assembly = Assembly.LoadFrom("path/to/external/assembly.dll"); var type = assembly.GetType("ExternalNamespace.ExternalClass"); var instance = Activator.CreateInstance(type); var method = type.GetMethod("Initialize"); method.Invoke(instance, null); var property = type.GetProperty("SomeProperty"); var value = property.GetValue(instance); ``` The `Initialize` method is supposed to set `SomeProperty`, but it seems like it might not be getting called correctly or is failing silently. I've verified that the method is present and has no parameters. Additionally, I've checked the object's state right after calling the method, but it's still returning `null` for `SomeProperty`. I've also tried casting the instance to `ExternalClass` to debug further, but that hasn't provided any insights. Could it be that the external assembly is not properly initializing the property due to some internal state or configuration? How can I better debug this situation to ensure the property is set correctly? Any insights into reflection and potential pitfalls with dynamically loaded assemblies would be greatly appreciated. This is my first time working with C# stable.