WinForm登录模块设计开发

 

用户登录类：

   
     

    
      
    
       
    
      public
    
       
    
      partial
    
       
    
      class
    
       UserLogin : DevComponents.DotNetBar.Office2007RibbonForm
 {
 
    
      private
    
       SceneViewer sceneViewer 
    
      =
    
       
    
      new
    
       SceneViewer();
 
    
      private
    
       UserManage userManage 
    
      =
    
       
    
      new
    
       UserManage();

 
    
      public
    
       UserLogin()
 {
 InitializeComponent();
 }

 
    
      private
    
       
    
      void
    
       btnCancel_Click(
    
      object
    
       sender, EventArgs e)
 { 
 
    
      this
    
      .Close();
 
    
      //
    
      MessageBox.Show("请输入正确的用户名和密码！", "登陆失败！", MessageBoxButtons.OK, MessageBoxIcon.Warning); 
    
      

    
       }

 
    
      private
    
       
    
      void
    
       btnLogin_Click(
    
      object
    
       sender, EventArgs e)
 {
 
 
    
      if
    
       (
    
      this
    
      .editUserName.Text 
    
      ==
    
       
    
      string
    
      .Empty)
 {
 MessageBox.Show(
    
      "
    
      用户名不能为空！
    
      "
    
      );
 
    
      this
    
      .editUserName.Focus();
 
    
      return
    
      ;
 } 
 
    
      else
    
       
    
      if
    
      (userManage.UserDictionary.ContainsKey(
    
      this
    
      .editUserName.Text))
 {
 
    
      string
    
       psd 
    
      =
    
       userManage.UserDictionary[
    
      this
    
      .editUserName.Text];
 
    
      if
    
       (
    
      this
    
      .editPassword.Text 
    
      ==
    
       psd)
 {
 MessageBox.Show(
    
      "
    
      欢迎登录本系统！
    
      "
    
      , 
    
      "
    
      登陆成功！
    
      "
    
      , MessageBoxButtons.OK, MessageBoxIcon.Information);
 
    
      this
    
      .DialogResult 
    
      =
    
       DialogResult.OK;
 }
 
    
      else
    
      
 {
 MessageBox.Show(
    
      "
    
      密码错误，请重新输入！
    
      "
    
      , 
    
      "
    
      密码错误！
    
      "
    
      , MessageBoxButtons.OK, MessageBoxIcon.Error);
 
    
      this
    
      .editPassword.Text 
    
      =
    
       
    
      string
    
      .Empty;
 
    
      this
    
      .editPassword.Focus();
 } 
 }
 
    
      else
    
      
 {
 MessageBox.Show(
    
      "
    
      用户名不存在！
    
      "
    
      ,
    
      "
    
      登录失败！
    
      "
    
      ,MessageBoxButtons.OK,MessageBoxIcon.Warning);
 
    
      this
    
      .editUserName.Text 
    
      =
    
       
    
      string
    
      .Empty;
 
    
      this
    
      .editPassword.Text 
    
      =
    
       
    
      string
    
      .Empty;
 
    
      this
    
      .editUserName.Focus();
 } 
 
 
 }

 

 
    
      private
    
       
    
      void
    
       btnLogin_KeyDown(
    
      object
    
       sender, KeyEventArgs e)
 {
 
    
      if
    
       (e.KeyCode 
    
      ==
    
       Keys.Enter)
 {
 
    
      this
    
      .btnLogin.Click
    
      +=
    
      new
    
       EventHandler(btnLogin_Click);
 }
 }

 
    
      private
    
       
    
      void
    
       UserLogin_Load(
    
      object
    
       sender, EventArgs e)
 {
 
    
      if
    
       (
    
      this
    
      .editUserName.Text 
    
      ==
    
       
    
      string
    
      .Empty 
    
      &&
    
       
    
      this
    
      .editPassword.Text 
    
      ==
    
       
    
      string
    
      .Empty)
 {
 
    
      this
    
      .btnLogin.Enabled 
    
      =
    
       
    
      false
    
      ;
 }
 }

 
    
      private
    
       
    
      void
    
       editPassword_TextChanged(
    
      object
    
       sender, EventArgs e)
 {
 
    
      if
    
       (
    
      this
    
      .editUserName.Text 
    
      ==
    
       
    
      string
    
      .Empty 
    
      &&
    
       
    
      this
    
      .editPassword.Text 
    
      ==
    
       
    
      string
    
      .Empty)
 
    
      this
    
      .btnLogin.Enabled 
    
      =
    
       
    
      false
    
      ;
 
    
      else
    
       
    
      if
    
       (
    
      this
    
      .editUserName.Text 
    
      ==
    
       
    
      string
    
      .Empty 
    
      &&
    
       
    
      this
    
      .editPassword.Text 
    
      !=
    
       
    
      string
    
      .Empty)
 
    
      this
    
      .btnLogin.Enabled 
    
      =
    
       
    
      false
    
      ;

 
    
      else
    
       
    
      if
    
       (
    
      this
    
      .editUserName.Text 
    
      !=
    
       
    
      string
    
      .Empty 
    
      &&
    
       
    
      this
    
      .editPassword.Text 
    
      ==
    
       
    
      string
    
      .Empty)
 
    
      this
    
      .btnLogin.Enabled 
    
      =
    
       
    
      false
    
      ;
 
    
      else
    
      
 
    
      this
    
      .btnLogin.Enabled 
    
      =
    
       
    
      true
    
      ;
 
 }


 }
   
     

 

主程序类：

   
     

    
      
    
      static
    
       
    
      class
    
       Program
 {
 
    
      ///
    
       
    
      <summary>
    
      
 
    
      ///
    
       The main entry point for the application.
 
    
      ///
    
       
    
      </summary>
    
      

    
       [STAThread]
 
    
      static
    
       
    
      void
    
       Main()
 {
 Application.EnableVisualStyles();
 Application.SetCompatibleTextRenderingDefault(
    
      false
    
      );

 UserLogin userLogin 
    
      =
    
       
    
      new
    
       UserLogin();
 
    
      try
    
      
 {
 
    
      if
    
       (userLogin.ShowDialog() 
    
      ==
    
       DialogResult.OK)
 Application.Run(
    
      new
    
       SceneViewer());
 
    
      else
    
      
 Application.Exit();
 }
 
    
      finally
    
      
 {
 userLogin.Close();
 } 
 }
 
 }
   
     

 

至于用户的管理，若用户数量很少，且内部使用可以用Dictionary<key,value>进行管理；

若用户数很多的话，就用数据库的方式进行管理