How to deal with 'argumentnullexception in c#?'
Example:
string str = null;
Console.WriteLine(str.ToString());
Trying to call a method on a null argument.
Solution:This exception arises when a null argument is passed to a method that doesn't accept it as valid. Always check for `null` before passing to methods that can't handle it.
if(str != null) {
Console.WriteLine(str.ToString());
}