C#--第十一周任务一登录窗体与主窗体

首先是登陆窗体:

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class frmLogin : Form    {        public frmLogin()        {            InitializeComponent();        }        private void frmLogin_Load(object sender, EventArgs e)        {        }        Form frmMain;        private void button1_Click(object sender, EventArgs e)        {//要求：在登录窗体中，假设当用户输入账号为“zhangsan”，且密码为“123”（密码显示为*）            //，则通过登录，销毁登录窗体，同时打开主窗体。否则，给出错误提示，如“账号或密码错误”            if(textBox1.Text.Equals("zhangsan")&&textBox2.Text.Equals("123"))            {                frmMain = new frmMain();                frmMain.Show();                           }            else             {                MessageBox.Show("您的账号或密码错误");            }                    }        private void textBox1_TextChanged(object sender, EventArgs e)        {        }        private void textBox2_TextChanged(object sender, EventArgs e)        {        }    }}

接着是主窗体:

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class frmMain : Form    {        public frmMain()        {            InitializeComponent();        }        private void frmMain_Load(object sender, EventArgs e)        {        }        private void 文件ToolStripMenuItem_Click(object sender, EventArgs e)        {        }        private void 打开主窗体1ToolStripMenuItem_Click(object sender, EventArgs e)        {            frm子窗体1 f = new frm子窗体1();            f.Show();            f.MdiParent = this;        }        private void 打开主窗体2ToolStripMenuItem_Click(object sender, EventArgs e)        {            foreach (var item in this.MdiChildren)            {                item.Dispose();            }            frm子窗体2 f1 = new frm子窗体2();            f1.Show();            f1.MdiParent = this;        }        private void frmMain_Load_1(object sender, EventArgs e)        {        }    }}

最后是两个子窗体

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class frm子窗体1 : Form    {        public frm子窗体1()        {            InitializeComponent();        }        private void frm子窗体1_Load(object sender, EventArgs e)        {        }    }}

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class frm子窗体2 : Form    {        public frm子窗体2()        {            InitializeComponent();        }        private void frm子窗体2_Load(object sender, EventArgs e)        {        }    }}