Difference Between .ToString() and Convert.ToString()

 Today I am going to show u a basic Difference between .ToString() and Convert.ToString() If you declare a string variable and don't assign any value in C#. Then by default it take a blank or null value itself . in this case if u use .ToString() method then our program should throw null reference exception. and in Convert.ToString() our program doesn't throw any exception. bcoz by default it takes a blank value instead of null