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How to use C# string Format



string Format method replace the argument Object into a text equivalent System.String.

Parameters:

  1. String format : The format String
  2. Object arg0 : The object to be formatted.

The format String Syntax is like {indexNumber:formatCharacter}

Returns:

  1. String : The formatted String

Exceptions:

  1. System.ArgumentNullException : The format String is null.
  2. System.FormatException : The format item in format is invalid.

The number indicating an argument to format is less than zero, or greater than or equal to

the number of specified objects to format.

examples :

Currency :

The currency symbol ($) displayed depends on the global locale settings.

Date :

You will get Today's date like : 01 January 2005

Time :

You will get Current Time Like : 10:10:12





using System;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double dNum = 0;
            dNum = 32.123456789;
            MessageBox.Show("Formated String " + string.Format("{0:n4}", dNum)); 
        }
    }
}

When you run this C# source code you will get "Formated String 32.1234"





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