Error: not all code paths return a value, anyone give me solution for this

[raajsj]

public string generateEmployeeid()*//here i am getting this error  'objdataclassname.generateEmployeeid()'.' not all code paths return a value'*
{       
objDataBaseClass = new DataBaseClass();
if (Designation == "Student")
{
int id;
int count = 01;
string typ = "SID-";
objDataBaseClass = new DataBaseClass();
Table = objDataBaseClass.GetDataTable("spGetEmployeeID");// passing storerprocedure name
if (Table.Rows.Count > 0)
{
DataRow Row = Table.Rows[0];
id = int.Parse(Row[0].ToString());
returnString = typ + (count + id).ToString();
}
return returnString;
} }  // i need to generate Userid for different users

[jstfsklh211]

there is no return value when designation does not equal student

[BMXDad]

You need a return value between the two curley brackets on line 18, like mentioned above.

[cyberdaemon]

try to declare the returnString at the top of your code.. after the method.. and specify the datatype..