Question

how do i convert a string of “001” to an int 001? using Convert.ToInt32() method or Int32.Parse() method gives the result as only 1

Answer 1

1 is an integer, 001 is a string. If you are trying to display a 3-digit series as an id or similar and are incrementing you will need to convert your string “001” to an integer, increment it, then convert it back to a “0” padded string for display.

public string NextId(string currentId)
{
    int i = 0;
    if (int.TryParse(currentId, out i))
    {
        i++;
        return(i.ToString().PadLeft(3,'0'));
    }
    throw new System.ArgumentException("Non-numeric string passed as argument");
}