Question

I have a DLL containing some methods (show, hide and validate). Here is an example of one of the methods hide(Panel paneldynamic, String id, List<EventActions> eventList). All methods contains the same parameters.

Now I have referenced the my DLL on my main form, how can I dynamically invoke one of the methods at runtime?

Answer 1

You’ll need to use reflection. First, load the assembly (note that this assumes you’ve imported System.Reflection):

Assembly a = Assembly.LoadFile(pathToTheDll);

Get the type containing the method by fully-qualified name:

Type t = a.GetType("Some.Class");

Now, get the method:

MethodInfo m = t.GetMethod("hide"); // For example

Then, all you have to do is invoke it:

m.Invoke(null, new object[] { /* parameters go here */ });

The first argument to Invoke is the instance. If your class is static, use null, otherwise, you’ll need to supply an instance of the type created using Assembly.CreateInstance.