c# - Declare a variable using a Type variable

Question

I have this code:

Type leftType = workItem[LeftFieldName].GetType();

I then want to declare a variable of that type:

leftType someVar;

Is that possible?

Answer 1

You can do something like these and cast them to a known interface.

var someVar = Convert.ChangeType(someOriginalValue, workItem[LeftFieldName].GetType());
var someVar = Activator.CreateInstance(workItem[LeftFieldName].GetType());

If you replace var with dynamic (and you are using .Net 4), you can call the methods you expect on the someVar object. If they don't exist, you'll just get a MissingMethodException.