Setting system time using C #

Using System;
Using System.Drawing;
Using System.Collections;
Using System.ComponentModel;
Using System.Windows.Forms;
Using System.Data;
Using System.Runtime.InteropServices;

Namespace WindowsApplication1
{
[StructLayout (LayoutKind.Sequential)]
public struct SystemTime
{
public ushort Wyear;
public ushort Wmonth;
public ushort Wdayofweek;
public ushort Wday;
public ushort Whour;
public ushort Wminute;
public ushort Wsecond;
public ushort Wmiliseconds;
}

public class Win32
{
[DllImport ("Kernel32.dll")]
public static extern bool SetSystemTime (ref SystemTime systime);
[DllImport ("Kernel32.dll")]
public static extern void GetSystemTime (ref SystemTime systime);
}


<summary>
Summary description of the Form1.
</summary>
public class Form1:System.Windows.Forms.Form
{
Private System.Windows.Forms.Button button1;
Private System.Windows.Forms.TextBox TextBox1;
Private System.Windows.Forms.TextBox TextBox2;
<summary>
The required designer variable.
</summary>
Private System.ComponentModel.Container components = null;

Public Form1 ()
{
//
Required for Windows Forms Designer support
//
InitializeComponent ();

//
TODO: Add any constructor code after the InitializeComponent call
//
}

<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}

Code generated #region the Windows forms Designer
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This.button1 = new System.Windows.Forms.Button ();
This.textbox1 = new System.Windows.Forms.TextBox ();
This.textbox2 = new System.Windows.Forms.TextBox ();
This. SuspendLayout ();
//
Button1
//
This.button1.Location = new System.Drawing.Point (188, 174);
This.button1.Name = "Button1";
This.button1.TabIndex = 0;
This.button1.Text = "Button1";
This.button1.Click + = new System.EventHandler (This.button1_click);
//
TextBox1
//
This.textBox1.Location = new System.Drawing.Point (56, 12);
This.textBox1.Name = "TextBox1";
This.textBox1.Size = new System.Drawing.Size (510, 21);
This.textBox1.TabIndex = 1;
This.textBox1.Text = "TextBox1";
//
TextBox2
//
This.textBox2.Location = new System.Drawing.Point (58, 50);
This.textBox2.Name = "TextBox2";
This.textBox2.Size = new System.Drawing.Size (506, 21);
This.textBox2.TabIndex = 2;
This.textBox2.Text = "TextBox2";
//
Form1
//
This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);
This. ClientSize = new System.Drawing.Size (602, 273);
This. Controls.Add (THIS.TEXTBOX2);
This. Controls.Add (This.textbox1);
This. Controls.Add (This.button1);
This. Name = "Form1";
This. Text = "Form1";
This. ResumeLayout (FALSE);

}
#endregion

<summary>
The main entry point for the application.
</summary>
[STAThread]
static void Main ()
{
Application.Run (New Form1 ());
}

private void Button1_Click (object sender, System.EventArgs e)
{
TextBox1.Text = DateTime.Now.ToLongDateString () + DateTime.Now.ToLongTimeString ();
SystemTime systime = new SystemTime ();

Systime.wyear = Convert.touint16 (DateTime.Now.Year);
Systime.wmonth = Convert.touint16 (DateTime.Now.Month);
The disposal of the
int nbeijinghour = datetime.now.hour-8;
if (nbeijinghour <= 0)
{
Nbeijinghour + 24;
systime.wday= convert.touint16 (datetime.now.day-1);
Systime.wdayofweek = Convert.touint16 (datetime.now.dayofweek-1);
}
Else
{
systime.wday= convert.touint16 (DateTime.Now.Day);
Systime.wdayofweek = Convert.touint16 (DateTime.Now.DayOfWeek);
}
Systime.whour = Convert.touint16 (Nbeijinghour);
Systime.wminute = Convert.touint16 (DateTime.Now.Minute);
Systime.wsecond = Convert.touint16 (DateTime.Now.Second);
Systime.wmiliseconds = Convert.touint16 (DateTime.Now.Millisecond);

Win32.setsystemtime (ref systime);
TextBox2.Text = DateTime.Now.ToLongDateString () + DateTime.Now.ToLongTimeString ();
}


}
}