int.TryParse = null if not numeric?

Question

is there some way of return null if it can\'t parse a string to int?

with:

public .... , string? categoryID) 
{
int.TryParse(categoryID, out categoryID);         


        

Answer 1

Do you want to do something like this?

public int? Parse(string categoryID) 
{
  int value;
  if (int.TryParse(categoryID, out value))
  {
    return value;
  }
  else
  {
    return null;
  }
}