C # winform a simple project countdown timer

Namespace filebinding
{
Public partial class form1: Form
{
Public form1 ()
{
Initializecomponent ();
}

Private void form1_load (Object sender, eventargs E)
{
String STR = "2009-03-20"; // end date
Datetime dt2 = datetime. Now; // obtain the date of today
Datetime dt1 = convert. todatetime (STR); // convert the end date type to datetime

String datetime = NULL; // remaining time of the project

Timespan ST1 = new timespan (dt1.ticks );
Timespan st2 = new timespan (dt2.ticks );

Timespan Ts = st1.subtract (st2); // end date minus current date

String dateterm = ts. Days. tostring () + "day"
+ Ts. Hours. tostring () + "hour"
+ Ts. Minutes. tostring () + "Minute"
+ Ts. Seconds. tostring () + "seconds ";

Datetime = "before the end of the project" + dateterm;

Label2.text = datetime; // displayed in the label
// MessageBox. Show (dateterm );
}

}
}