C＃如何将双精度型转换为带指数符号的字符串

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();
        Console.WriteLine(l_strNum);
        //Wanted results: 3.33e+00

Thanks!

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");