Difference between .Tostring() and convert.Tostring()

Calling ToString() on an object presumes that the object is not null (since an object needs to exist to call an instance method on it). Convert.ToString(obj) doesn't need to presume the object is not null (as it is a static method on the Convert class), but instead will return String.Empty if it is null.

Jignesh Trivedi14y ago

hi,

ToString() raise exception when the object is null
Convert.ToString() return string.Empty in case of null object

string o = NullObject.ToString(); // Give runtime exception.
string o1 = Convert.ToString(NullObject); // not give any runtime exception.

hope this will help you.

Girish Barje14y ago

Convert.ToString() handles null, while ToString() doesn't.

hj jh14y ago

The major & most important differnce between the two is that convert.tostring() function will handle null by returning string.Empty where as .tostring() will not handle it and so will return null exception
So as a good programming practice , use convert.tostring().

Please accept as answer if your problem resolved!