本文例項講述了WinForm實現最小化到系統托盤方法。分享給大家供大家參考。具體分析如下：

有個叫NotifyIcon的控制元件

1、建個WinForm專案，其它操作略過。
2、拉個NotifyIcon控制元件，將屬性Visable設定成False，在Text屬性上隨便填些檔案。
3、實現Form的SizeChanged事件，程式碼如下：

if(this.WindowState == FormWindowState.Minimized) //判斷是否最小化
{
this.ShowInTaskbar = false; //不顯示在系統工作列
notifyIcon.Visible = true; //托盤圖示可見
}
 

4、實現NotifyIcon控制元件的DoubleClick事件，程式碼如下：

if(this.WindowState == FormWindowState.Minimized)
{
this.ShowInTaskbar = true; //顯示在系統工作列
this.WindowState = FormWindowState.Normal; //還原窗體
notifyIcon.Visible = false; //托盤圖示隱藏
}

例題：

private ContextMenu notifyiconMnu;
#region 最小化到工作列
/// <summary>
/// 最小化到工作列
/// </summary>
private void Initializenotifyicon()
{
  //定義一個MenuItem陣列，並把此陣列同時賦值給ContextMenu物件 
  MenuItem[] mnuItms = new MenuItem[3];
  mnuItms[0] = new MenuItem();
  mnuItms[0].Text = "顯示視窗";
  mnuItms[0].Click += new System.EventHandler(this.notifyIcon1_showfrom);
  mnuItms[1] = new MenuItem("-");
  mnuItms[2] = new MenuItem();
  mnuItms[2].Text = "退出系統";
  mnuItms[2].Click += new System.EventHandler(this.ExitSelect);
  mnuItms[2].DefaultItem = true;
  notifyiconMnu = new ContextMenu(mnuItms);
  notifyIcon1.ContextMenu = notifyiconMnu;
  //為托盤程式加入設定好的ContextMenu物件 
}
private void notifyIcon1_DoubleClick(object sender, EventArgs e)
{
  if (this.WindowState == FormWindowState.Minimized)
  {
    this.Show();
    this.ShowInTaskbar = true; 
    this.WindowState = FormWindowState.Normal; 
    notifyIcon1.Visible = false; 
  }
}
public void notifyIcon1_showfrom(object sender, System.EventArgs e)
{
  if (this.WindowState == FormWindowState.Minimized)
  {
    this.Show();
    this.ShowInTaskbar = true;
    this.WindowState = FormWindowState.Normal;
    notifyIcon1.Visible = false;
  }
}
public void ExitSelect(object sender, System.EventArgs e)
{
  //隱藏托盤程式中的圖示 
  notifyIcon1.Visible = false;
  //關閉系統 
  this.Close();
  this.Dispose(true);
}
#endregion
private void Form_main_SizeChanged(object sender, EventArgs e)
{
  if (this.WindowState == FormWindowState.Minimized)
  //判斷是否最小化
  {
    notifyIcon1.Visible = true;
    this.Hide();
    this.ShowInTaskbar = false;
    Initializenotifyicon();
  }
}