Question

How does the code looks that would create an object of class:

string myClass = 'MyClass'; 

Of the above type, and then call

string myMethod = 'MyMethod'; 

On that object?

Answer 1

• Use Type.GetType(string) to get the type object.
• Use Activator.CreateInstance(Type) to create an instance.
• Use Type.GetMethod(string) to retrieve a method.
• Use MethodBase.Invoke(object, object[]) to invoke the method on the object

Example, but with no error checking:

using System; using System.Reflection;  namespace Foo {     class Test     {         static void Main()         {             Type type = Type.GetType('Foo.MyClass');             object instance = Activator.CreateInstance(type);             MethodInfo method = type.GetMethod('MyMethod');             method.Invoke(instance, null);         }     }      class MyClass     {         public void MyMethod()         {             Console.WriteLine('In MyClass.MyMethod');         }     } } 

Each step needs careful checking – you may not find the type, it may not have a parameterless constructor, you may not find the method, you may invoke it with the wrong argument types.

One thing to note: Type.GetType(string) needs the assembly-qualified name of the type unless it’s in the currently executing assembly or mscorlib.