Formatting a number in C#(not VB) to show commas

Question

I have a bunch of data that I get as a string, and it needs to be formatted as a number (int).

So something like this: 128989899 needs to be displayed as 128,989,899

What would the correct way to achieve this?

PS: Currently existing questions do not address my question, before closing my question, please read it carefully or if you do close it, please provide a concise answer to what I am asking.

Answer 1

Something like this:

var number = "128989899";
Console.WriteLine(String.Format("{0:N0}", Int32.Parse(number)));

Answer 2

If I understand the question correctly, you have a string containing numbers stored as text.

You wish these to be displayed as comma-separated numbers such as 123,456,789.

Something along the lines of the following should help to achieve this, simply converting to an int and then back again into a string in the correct format:

string Input = "128989899";
int TempInt;
int.TryParse(Input, out TempInt);
string Output = TempInt.ToString("#,###");

Answer 3

Duplicate: string format numbers

int number = 1000000000;
string commaseperated = number.ToString("#,##0");