How do I get the value generated by a method in a variable which can be accessible on button click

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i tried to generate random numbers n i was using winform c# code . i want to send generated random number at a time to database and my mail.here the problem is every time previous generated random num is getting concatenated .but this should not happen how do i restrict it.

What I have tried:

public static string strrandom = string.Empty;

      void Generate_OTP()
      {

         }

Posted 3-Jun-17 0:32am

saimanisha

Updated 6-Jun-17 21:30pm

v2

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Richard Deeming 7-Jun-17 11:53am

Removing the content of your question after it has been answered is EXTREMELY rude.

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OriginalGriff · Answer 1 · 2017-06-03T02:56:00

Simplest solution is to return the value, instead of using a "global variable":

private static Random objran = new Random();
private static string Generate_OTP()
    {
    string strRandom = "";
    string chars = "0123456789";
    int No_of_Characters = 6;
    for (int i = 0; i < No_of_Characters; i++)
        {
        int pos = objran.Next(1, chars.Length);
        string newChar = chars[pos].ToString();
        strRandom += newChar;
        chars = chars.Replace(newChar, "");
        }
    return strRandom;
    }

You then just use it like this:

SQL.Parameters.AddWithValue("TEXT_ME_RESET_PASSWORD", Generate_OTP());