Auto Generate alphanumeric Unique Id with C#

Question

Hi All,

total string length is 5 chars

I have a scenario, ID starts with

A0001 and ends with A9999 then B0001 to B9999 until F0001 to f9999

after that

FA001 to FA999 then FB001 to FB999 until ....FFFF9

Please suggest any idea on how to create this format

Thanks in advance

Answer 1

public static IEnumerable<string> Numbers()
{
    return Enumerable.Range(0xA0000, 0xFFFF9 - 0xA0000 + 1)
        .Select(x => x.ToString("X"));
}

You could also have an id generator class:

public class IdGenerator
{
    private const int Min = 0xA0000;
    private const int Max = 0xFFFF9;
    private int _value = Min - 1;

    public string NextId()
    {
        if (_value < Max)
        {
            _value++;
        }
        else
        {
            _value = Min;
        }
        return _value.ToString("X");
    }
}

Answer 2

hello, Dear Darvin Dimitrov

Its very Useful code to me...but how can i use it. means where i have to put this code and where it will show there unique id please give a proper format.

i just need to auto generate id like abc101,abc102,abc103,....abc10n and it should be store in DB table. and also it should be show in any textbox at runtime .

Please give a proper solution....

Special Thanks in advance :)

Regards.

Pradeep Kodley