[可视化编程]窗体设计及其应用
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实验目的
掌握 C# 的 MDI 窗体设计，一个主窗体、多个子窗体间的切换。掌握窗体中基本的控件设计方法，label、textbox、groupbox、radiobutton、comboBox、button 等。掌握 Messagebox 的使用方法
实验要求
登录窗口
（1）设计 MDI 窗体，一个主窗体，登录子窗体输入用户名和密码（系统设置默认用户登录信息：用户名：whut；密码：1234），如果用户名密码正确，消息框提示登录成功。如果用户名不正确，提示需先注册。如果密码错误，提示密码有误，重新输入
注册窗口
（2）注册子窗体设计，包括用户名、密码、确认密码（TextBox）、性别（GroupBox 和 RadioButton）、专业（ComboBox）等信息。点击 “确认” 按钮，如果用户名不为空，密码与确认密码一致，提示注册成功，并显示注册信息。否则提示错误信息。点击 “重置” 按钮，清空输入框中的内容。点击 “登录” 按钮，返回到登录界面
源码
BackFrom.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace UserMessageManagementSystem
public partial class BackForm : Form
public BackForm()
InitializeComponent();
LoginForm loginForm = new LoginForm();
loginForm.MdiParent = this;
loginForm.Show();
private void BackForm_Load(object sender, EventArgs e)
BackForm.Designer.cs
namespace UserMessageManagementSystem
partial class BackForm
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
if (disposing && (components != null))
components.Dispose();
base.Dispose(disposing);
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
this.SuspendLayout();
//
// BackForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(482, 453);
this.IsMdiContainer = true;
this.Name = "BackForm";
this.Text = "用户信息管理系统";
this.Load += new System.EventHandler(this.BackForm_Load);
this.ResumeLayout(false);
#endregion
LoginForm.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace UserMessageManagementSystem
public partial class LoginForm : Form
public LoginForm()
InitializeComponent();
private void Login_Click(object sender, EventArgs e)
//从用户名和密码文本框中读取字符串
String userName = UserName.Text;
String userPassword = UserPassword.Text;
//如果用户没有输入用户名就点击登录按键，提示需先注册
if (userName.Length == 0)
MessageBox.Show("用户名不能为空，请输入用户名！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
else
//如果密码框为空
if (userPassword.Length == 0)
MessageBox.Show("请输入密码！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
else
//匹配用户名和密码的正确性，如果正确
if (String.Equals(userName, UserInfo.userName) && String.Equals(userPassword, UserInfo.userPassword))
MessageForm messageForm = new MessageForm();
messageForm.MdiParent = this.MdiParent;
messageForm.Show();
this.Hide();
//如果密码错误
else if (String.Equals(userName, UserInfo.userName) && !String.Equals(userPassword, UserInfo.userPassword))
MessageBox.Show("密码错误！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
//如果该用户名不存在
else
MessageBox.Show("该用户不存在,请先进行注册！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
private void LRegister_Click(object sender, EventArgs e)
RegisterForm registerForm = new RegisterForm();
registerForm.MdiParent = this.MdiParent;
registerForm.Show();
this.Hide();
//全局变量，初始化默认用户信息
static class UserInfo
public static String userName = "whut";
public static String userPassword = "1234";
public static String userSex = "男";
public static String Major = "计算机学院";
LoginForm.Designer.cs
namespace UserMessageManagementSystem
partial class LoginForm
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
if (disposing && (components != null))
components.Dispose();
base.Dispose(disposing);
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.UserName = new System.Windows.Forms.TextBox();
this.UserPassword = new System.Windows.Forms.TextBox();
this.Login = new System.Windows.Forms.Button();
this.LRegister = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(36, 62);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(58, 20);
this.label1.TabIndex = 0;
this.label1.Text = "用户名:";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(36, 125);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(55, 20);
this.label2.TabIndex = 1;
this.label2.Text = "密 码:";
//
// UserName
//
this.UserName.Location = new System.Drawing.Point(113, 59);
this.UserName.Name = "UserName";
this.UserName.Size = new System.Drawing.Size(125, 27);
this.UserName.TabIndex = 2;
//
// UserPassword
//
this.UserPassword.Location = new System.Drawing.Point(113, 122);
this.UserPassword.Name = "UserPassword";
this.UserPassword.PasswordChar = '*';
this.UserPassword.Size = new System.Drawing.Size(125, 27);
this.UserPassword.TabIndex = 3;
//
// Login
//
this.Login.Location = new System.Drawing.Point(113, 182);
this.Login.Name = "Login";
this.Login.Size = new System.Drawing.Size(50, 30);
this.Login.TabIndex = 4;
this.Login.Text = "登录";
this.Login.UseVisualStyleBackColor = true;
this.Login.Click += new System.EventHandler(this.Login_Click);
//
// LRegister
//
this.LRegister.Location = new System.Drawing.Point(188, 182);
this.LRegister.Name = "LRegister";
this.LRegister.Size = new System.Drawing.Size(50, 30);
this.LRegister.TabIndex = 5;
this.LRegister.Text = "注册";
this.LRegister.UseVisualStyleBackColor = true;
this.LRegister.Click += new System.EventHandler(this.LRegister_Click);
//
// LoginForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(282, 253);
this.Controls.Add(this.LRegister);
this.Controls.Add(this.Login);
this.Controls.Add(this.UserPassword);
this.Controls.Add(this.UserName);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Name = "LoginForm";
this.Text = "欢迎登录";
this.ResumeLayout(false);
this.PerformLayout();
#endregion
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox UserName;
private System.Windows.Forms.TextBox UserPassword;
private System.Windows.Forms.Button Login;
private System.Windows.Forms.Button LRegister;
MessageForm.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace UserMessageManagementSystem
public partial class MessageForm : Form
public MessageForm()
InitializeComponent();
private void MessageForm_Load(object sender, EventArgs e)
usermassage.Text = UserInfo.userName;
userpassword.Text = UserInfo.userPassword;
usersex.Text = UserInfo.userSex;
useracademy.Text = UserInfo.Major;
private void Register_Click(object sender, EventArgs e)
RegisterForm registerForm = new RegisterForm();
registerForm.MdiParent = this.MdiParent;
registerForm.Show();
this.Hide();
private void Login_Click(object sender, EventArgs e)
LoginForm loginForm = new LoginForm();
loginForm.MdiParent = this.MdiParent;
loginForm.Show();
this.Hide();
MessageForm.Designer.cs
namespace UserMessageManagementSystem
partial class MessageForm
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
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