Auto Generate alphanumeric Unique Id with C#

Question

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

Answer 1

If you need to take it from the database and do this you can use something like the following.

int dbid = /* get id from db */
string id = dbid.ToString("X5");

This should give you the format you are looking for as a direct convert from the DB ID.