C#,Vb.Net - Difference between Convert.tostring(Object) and Object.tostring() method Example

Introduction:

In this Post I will explain you differences between obj.tostring() and Convert.tostring(obj) in asp.net.

Explanation :

The basic difference between them is “Convert.ToString(Object)” handles NULL values even if variable value become null but “Object.ToString()” will not handle NULL values it will throw a NULL reference exception error. So as a good coding practice using “convert” is always safe.

Example:

//Returns an empty string for str and does not throw
 an exception.
string str;
object i = null;
str = Convert.ToString(i);


Returns a null reference exception for str.
string str;
object i = null;
str = i.ToString();