Answer / hima sijo

convert.tostring handles Null value also where
Variable.tostring wont handle null value.It throw exception

Answer / abdul

Convert.ToString handles null where as simple
variable.ToString() doesn;t;

But Convert class is an optimization cost, when we use
inside any loop, need to minimize it

Sample ToString();

Will Work
int salary = 10000;
string oldSalary = salary.tostring();

Will Throw exeption
int salary = null;
string oldSalary = salary.tostring(); ---> throws exception

Sample Convert.ToString()
Will Work
int salary = 10000;
string oldSalary = Convert.ToString(salary);

Will Work
int salary = null;
string oldSalary = Convert.ToString(salary); null will return

Answer / sanjib ghosh

Dim salary As Int16
Dim oldSalary As String = salary.ToString()
Dim newSalary As String = Convert.ToString(salary)
MsgBox(oldSalary & "")
MsgBox(newSalary & "")
''No exception throw

both work same function

Answer / pavel

object ss =null;

string s1 = ss.ToString(); ---------- exeption
string s2 = Convert.ToString(ss); --- ""

--------------------
int ss =null; --- int can't be converted to null

--------------------
int ss = 1;

string s1 = ss.ToString(); ---------- "1"
string s2 = Convert.ToString(ss); --- "1"

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