Different Between Convert.ToString() And .ToString() Method.

What is the difference between
Convert.toString() and .toString() method ?

Just to give an understanding of what the above question means see the below code.

int i =0; 
MessageBox.Show(i.ToString()); 
MessageBox.Show(Convert.ToString(i)); 


We can convert the integer “i” using “i.ToString()” or “Convert.ToString” so what is the 
difference. The basic difference between them is “Convert” function handles NULLS while 
“i.ToString()” does not it will throw a NULL reference exception error. So as a good coding 
practice using “convert” is always safe. . .