C# how to convert a double to string with exponential notation

Question

I\'m trying to convert double to string in format of exponential notation. for example:

double l_dNum = 3.333;
        string l_strNum = l_dNum.ToString();
             


        

Answer 1

From MSDN examples

string l_strNum = l_dNum.ToString("E");

If you want up to 2 decimals only

string l_strNum = l_dNum.ToString("E2");