How to format integer as string with 2 digits?

Question

I would like to format an integer 9 to "09" and 25 to "25".

How can this be done?

Answer 1

You can use either of these options:

The "0" Custom Specifier

• value.ToString("00")
• String.Format("{0:00}", value)

The Decimal ("D") Standard Format Specifier

• value.ToString("D2")
• String.Format("{0:D2}", value)

For more information:

• Custom Numeric Format Strings
• Standard Numeric Format Strings