Question

I am adding a new record to XML file, first I’m querying all existing items and storing the count in an int

int number = query.count()

and then increment the number by 1.

number = number + 1;

Now I want to format this value in a string having N00000000 format
and the number will occupy the last positions.

Pseudo code:

//declare the format string
sting format = "N00000000"

//calculate the length of number string
int length =number.ToString().Length();

// delete as many characters from right to left as the length of number string
???

// finally concatenate both strings with + operator
???

Answer 1

int i = 123;
string n = "N" + i.ToString().PadLeft(8, '0');