How to display the current time and date in C#

You'd need to set the label's text property to DateTime.Now:

labelName.Text = DateTime.Now.ToString();

You can format it in a variety of ways by handing ToString() a format string in the form of "MM/DD/YYYY" and the like. (Google Date-format strings).

The System.DateTime class has a property called Now, which:

Gets a DateTime object that is set to the current date and time on this computer, expressed as the local time.

You can set the Text property of your label to the current time like this (where myLabel is the name of your label):

myLabel.Text = DateTime.Now.ToString();

For time:

label1.Text = DateTime.Now.ToString("HH:mm:ss"); //result 22:11:45

or

label1.Text = DateTime.Now.ToString("hh:mm:ss tt"); //result 11:11:45 PM

For date:

label1.Text = DateTime.Now.ToShortDateString(); //30.5.2012