Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

C# - GetMethod returns null

Tags:

c#

I have A class:

public abstract class A
{

}

And then I have B class that derives from it:

public sealed class B : A
{
    public void SomeMethod()
    {
        var method = this.GetType().GetMethod("AddText");
    }

    private void AddText(string text)
    {
        ...
    }
}

Why is GetMethod returning null?

like image 927
Gilbert Williams Avatar asked Jul 13 '15 16:07

Gilbert Williams


People also ask

What is the full name of C?

In the real sense it has no meaning or full form. It was developed by Dennis Ritchie and Ken Thompson at AT&T bell Lab. First, they used to call it as B language then later they made some improvement into it and renamed it as C and its superscript as C++ which was invented by Dr.

What do you mean by C?

" " C is a computer programming language. That means that you can use C to create lists of instructions for a computer to follow. C is one of thousands of programming languages currently in use.

What is C language used for?

C programming language is a machine-independent programming language that is mainly used to create many types of applications and operating systems such as Windows, and other complicated programs such as the Oracle database, Git, Python interpreter, and games and is considered a programming foundation in the process of ...


2 Answers

var methodInfo = this.GetType().GetMethod("AddText", BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { typeof(string) }, null);

Your method has a parameter, you need to use the overload that accepts a type array for the parameter types and the binding flags.

In .net Method signatures are based on their name, their return type, and their parameters.

So if your method has parameters you have to tell Reflection what parameter types it has via a Type[].

like image 197
Ryan Mann Avatar answered Sep 23 '22 12:09

Ryan Mann


By default, Reflection will only search for public methods.

You need to pass BindingFlags.Instance | BindingFlags.NonPublic.

like image 35
SLaks Avatar answered Sep 19 '22 12:09

SLaks