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C# : How to call dynamically a generic methodFiled Under: c#

Recently, I encountered a problem in C#. I had to invoke a generic method but didn’t know which object would be in entry because I was going to seek it through reflection.

So, I have a method that could be called, for example:

 public bool MyMethod<T>(T x, Tx)

I want to call it but I do not know what is T. T may be several different things depending on the rest of the code. I cannot affect T with anythings. The compiler will not accept, for example:

 bool resultat = MyMethod<this.getType()>(x,y)

After some research on google, I changed the code snippets that I found and it gave me this:

    private object invokeGenericMethod(string typeName,string methodName,object[] parameters)
        {
 
            Type type = System.Type.GetType(typeName);
 
            MethodInfo method = this.GetType().GetMethod(methodName,
                BindingFlags.Public | BindingFlags.Instance);
 
            MethodInfo genericMethod = method.MakeGenericMethod(type);
            return genericMethod.Invoke(this, parameters);
 
        }

So, to invoke dynamically, I can now have something like:

object[] invokeArgs = { "parameter1","parameter2","etc" };
object result = InvokeGenericMethod(this.GetType().Name, "MyMethod", invokeArgs);

I use the first parameter of InvokeGenericMethod to pass the type of class. So the code will always be adapted from the class from which it is called.

Tags: c#