Standard Numeric Format Strings in C#

Description

We can use standard numeric format string to format a numeric value in one of two ways.

We can use it in ToString method with a format parameter. The following example formats a numeric value as a currency string in the current (in this case, the en-US) culture.

Example

decimal value = 123.456m;
Console.WriteLine(value.ToString("C2"));

The code above generates the following result.

We can also use the formatString parameter methods such as String.Format, Console.WriteLine, and StringBuilder.AppendFormat.

The following example uses a format item to insert a currency value in a string.

decimal value = 123.456m;
Console.WriteLine("Your account balance is {0:C2}.", value);

The code above generates the following result.