Compiler Error CS0417
'identifier': cannot provide arguments when creating an instance of a variable type
This error occurs if a call to the new operator on a type parameter has arguments. The only constructor that can be called by using the new operator on an unknown parameter type is a constructor that has no arguments. If you need to call another constructor, consider using a class type constraint or interface constraint.
Example
The following example generates CS0417:
// CS0417
class ExampleClass<T> where T : new()
{
// The following line causes CS0417.
T instance1 = new T(1);
// The following line doesn't cause the error.
T instance2 = new T();
}