Generate Unique Number in C#

Question

I create an application in which I want to give the unique password to the user. How can I generate unique number in C# language all the time? plz help me..

Akkiraju Ivaturi · Answer

private string CryptedRandomString() { lock (this) { int rand = 0; byte[] randomNumber = new byte[5]; RNGCryptoServiceProvider Gen = new RNGCryptoServiceProvider(); Gen.GetBytes(randomNumber); rand = Math.Abs(BitConverter.ToInt32(randomNumber, 0)); return ConvertIntToStr(rand); } } private string ConvertIntToStr(int input) { lock (this) { string output = ""; while (input > 0) { int current = input % 10; input /= 10; if (current == 0) current = 10; output = (char)((char)'A' + (current - 1)) + output; } return output; } } Now you can call this method like this: string GeneratedPassword = ""; GeneratedPassword = CryptedRandomString() + CryptedRandomString(); Console.WriteLine(GeneratedPassword.Substring(0,8));

Santhosh Kumar Jayaraman · Answer

Use GUID and NewGuid() method. Try the below code from msdn using System; class Sample { public static void Main() { Guid g; g = Guid.NewGuid(); Console.WriteLine(g); Console.WriteLine(Guid.NewGuid()); } }

Generate Unique Number in C#

Answers (2)