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