How to Get DayofYear From DateTimePicker Using Window Application C#

Get DayofYear From DateTimePicker 

Get the DayofYear Value From DatetimePicker using  C#  in Window Application.

Jquery Calender View Format,Month,Year 

Jquery Calender With TextBox

Jquery DatePicker with Textbox Using Asp.Net C#
Calender Control DatePicker Using JQuery
Show PopUp Window Open DateTimePicker

First Add the - New Window Form - Add the DateTimePicker From ToolBox  

C# Coding

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace QueryWindows

{

    public partial class datepickerMonth : Form

    {

        public datepickerMonth()

        {

            InitializeComponent();

        }

     private void dateTimePicker1_ValueChanged(object sender, EventArgs e)

        {

            textBox1.Text = dateTimePicker1.Value.DayOfYear.ToString();

        }

    }

}