c sharp - How to Get Date and Time Difference in C SHARP

I have example here on how to get the difference of date and time in C#.

Step: 1

Create a timer then set the interval to 10 and enabled to true.

Step: 2

Create 3 Label. Label1,Label2,Label3.

Step: 3

Create 2 Datepicker. Name it dtfrom and dtto.

Step: 4

Create a Button1

Then Copy this Code at your form:

private void dateTimePicker1_ValueChanged(object sender, EventArgs e)

{label1.Text = dtfrom.Value.ToString();}

private void timer1_Tick(object sender, EventArgs e)

{label2.Text = string.Format("{0:G}", DateTime.Now);}

private void button1_Click(object sender, EventArgs e)

{

TimeSpan ts = new TimeSpan();

DateTime dt1,dt2 = new DateTime();

dt1 = dtfrom.Value;

dt2 = Convert.ToDateTime(label2.Text);

ts=dt1.Subtract(dt2);

label3.Text = ts.ToString(); //Answer

}

                                                  WITH MY BEST: MOHAMED BASHA