C# Convert T to long

Question

I have a generic class (C#),

class MyClass<T> where T : struct, IComparable<T>
{
    public T filelocation;
}

T can be either UInt32 or UInt64 (nothing else).

I need to convert filelocation to a long to seek in a file...

I have tried the following

long loc = (T)myclass.filelocation;

long loc = (T)(object)myclass.filelocation;

But nothing seems to work...

Any ideas?

Answer 1

Call Convert.ToInt64.

Writing (object)fileLocation creates a boxed UInt32.
Boxed value types can only be unboxed to their original value types, so you cannot cast it in one step to long.
You could write (long)(ulong)fileLocation, but that will fail for a uint for the same reason.

Answer 2

Try Convert.ToInt64.

long loc = Convert.ToInt64(myclass.filelocation);