c# - What's the correct way to not update an out variable -

i've implemented tryparse function class minmax this:

    public static bool tryparse(string s, out minmax result)     {         var parts = s.split(' ');         if (parts.length != 2)         {             return false;         }         float min;         float max;         if (!float.tryparse(parts[0].trim(), out min) || !float.tryparse(parts[1].trim(), out max))         {             return false;         }         result = new minmax(min, max);         return true;     } 

however doesn't compile since apparently out parameter needs written. what's correct way fix this? able use function if parsing fails, parameter passed remains unchanged. guess 1 way add like:

result = result; 

but line issues warning.

assuming minmax reference type, assign null it. other tryparse method work.

check out code:

    string s = "12dfsq3";     int = 444;     int.tryparse(s, out i);     console.writeline(i); 

i set 0 instead of remaining @ 444.