C#中容器控件GroupBox、Panel、TabControl

实现如图所示登录界面，当输入正确用户名及密码时，转到主界面，否则给出错误提示。要求不同身份的登陆者拥有不同的操作权限。

源代码：

1.初始化三个string类型的变量分别用来存储用户名、密码和身份。

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1. string yhm, mm, sf;

string yhm, mm, sf;

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1. private void Form1_Load(object sender, EventArgs e)  
2.         {  
3.             yhm=mm="";  
4.             sf=radioButton1.Text;  
5.         }  

private void Form1_Load(object sender, EventArgs e){yhm=mm="";sf=radioButton1.Text;}

1>学生：

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1. private void radioButton1_CheckedChanged(object sender, EventArgs e)  
2.         {  
3.             if(radioButton1.Checked)  
4.             {  
5.                 sf=radioButton1.Text;  
6.                 checkBox1.Checked = true;  
7.                 checkBox2.Checked=checkBox3.Checked=checkBox4.Checked=checkBox5.Checked=false;  
8.             }  
9.           
10.         }  

private void radioButton1_CheckedChanged(object sender, EventArgs e){if(radioButton1.Checked){sf=radioButton1.Text;checkBox1.Checked = true;checkBox2.Checked=checkBox3.Checked=checkBox4.Checked=checkBox5.Checked=false;}}

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1. private void radioButton2_CheckedChanged(object sender, EventArgs e)  
2.        {  
3.            if (radioButton2.Checked)  
4.            {  
5.                sf = radioButton2.Text;  
6.                checkBox1.Checked=checkBox2.Checked = true;  
7.                checkBox3.Checked = checkBox4.Checked = checkBox5.Checked = false;  
8.            }  
9.          
10.        }  

 private void radioButton2_CheckedChanged(object sender, EventArgs e){if (radioButton2.Checked){sf = radioButton2.Text;checkBox1.Checked=checkBox2.Checked = true;checkBox3.Checked = checkBox4.Checked = checkBox5.Checked = false;}}

3>管理员：

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1. private void radioButton3_CheckedChanged(object sender, EventArgs e)  
2.         {  
3.             if (radioButton3.Checked)  
4.             {  
5.                 sf = radioButton3.Text;  
6.                 checkBox1.Checked = checkBox2.Checked = checkBox3.Checked = checkBox4.Checked = checkBox5.Checked = true;  
7.             }  
8.           
9.         }  

private void radioButton3_CheckedChanged(object sender, EventArgs e){if (radioButton3.Checked){sf = radioButton3.Text;checkBox1.Checked = checkBox2.Checked = checkBox3.Checked = checkBox4.Checked = checkBox5.Checked = true;}}

1>确定：

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1. private void button1_Click(object sender, EventArgs e)  
2.        {  
3.            yhm = textBox1.Text.Trim();  
4.            mm = textBox2.Text.Trim();  
5.            if (yhm == "xs" && mm == "xs" && sf == "学生")  
6.            {  
7.                tabControl1.SelectedTab = tabPage2;  
8.                panel2.Visible = true;  
9.                button4.Enabled = button5.Enabled = button6.Enabled = button7.Enabled = false;  
10.                panel1.Visible = false;  
11.            }  
12.   
13.   
14.            else if (yhm == "js" && mm == "js" && sf == "教师")  
15.            {  
16.                tabControl1.SelectedTab = tabPage2;  
17.                panel2.Visible = true;  
18.                button3.Enabled=button4.Enabled = true;  
19.                button5.Enabled = button6.Enabled = button7.Enabled = false;  
20.                panel1.Visible = false;  
21.            }  
22.   
23.            else if (yhm == "gly" && mm == "gly" && sf == "管理员")  
24.            {  
25.                tabControl1.SelectedTab = tabPage2;  
26.                panel2.Visible = true;  
27.                button3.Enabled=button4.Enabled = button5.Enabled = button6.Enabled = button7.Enabled = true;  
28.                panel1.Visible = false;  
29.            }  
30.   
31.            else  
32.                MessageBox.Show("用户名或密码错误","登录失败");  
33.        }  

 private void button1_Click(object sender, EventArgs e){yhm = textBox1.Text.Trim();mm = textBox2.Text.Trim();if (yhm == "xs" && mm == "xs" && sf == "学生"){tabControl1.SelectedTab = tabPage2;panel2.Visible = true;button4.Enabled = button5.Enabled = button6.Enabled = button7.Enabled = false;panel1.Visible = false;}else if (yhm == "js" && mm == "js" && sf == "教师"){tabControl1.SelectedTab = tabPage2;panel2.Visible = true;button3.Enabled=button4.Enabled = true;button5.Enabled = button6.Enabled = button7.Enabled = false;panel1.Visible = false;}else if (yhm == "gly" && mm == "gly" && sf == "管理员"){tabControl1.SelectedTab = tabPage2;panel2.Visible = true;button3.Enabled=button4.Enabled = button5.Enabled = button6.Enabled = button7.Enabled = true;panel1.Visible = false;}elseMessageBox.Show("用户名或密码错误","登录失败");}

2>取消：

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1. private void button2_Click(object sender, EventArgs e)  
2.         {  
3.             this.Close();  
4.         }  

private void button2_Click(object sender, EventArgs e){this.Close();}

3>注销登录：

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1. private void button8_Click(object sender, EventArgs e)  
2.         {  
3.             panel1.Visible = true;  
4.             panel2.Visible = false;  
5.             textBox1.Text = textBox2.Text = "";  
6.             radioButton1.Checked = true;  
7.             tabControl1.SelectedTab = tabPage1;  
8.         }  

private void button8_Click(object sender, EventArgs e){panel1.Visible = true;panel2.Visible = false;textBox1.Text = textBox2.Text = "";radioButton1.Checked = true;tabControl1.SelectedTab = tabPage1;}

4>退出系统：

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1. private void button9_Click(object sender, EventArgs e)  
2.         {  
3.             Application.Exit();  
4.         }      

private void button9_Click(object sender, EventArgs e){Application.Exit();}