How to use a Type variable in a generic method call (C#)

Question

I have a Type variable t passed into a method, and I want to use it as a generic parameter when calling IQueryable.Join like the following

Answer 1

I'm not sure of the details of your "type variable," but if the variable is already a generic parameter to the method, you can use it as a generic parameter to Join also:

public void MyMethod()
{
    // do some stuff to get queryResult, then
    queryResult.Join(items, outerSelector, innerSelector, (a, b) => something);
}