明星管理系统

else
MessageBox.Show("密码错误");
}
}
else
MessageBox.Show("用户名不存在，请检查用户名");
using System;
using System.Collections.Generic;
using ponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
{
textBox1.Visible = true;//设置用户名的情况
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
using System.Windows.Forms;
using System.Data.SqlClient;
namespace WindowsFormsApplication4
{
public partial class Form5 : Form
{
private int c = 0;
{
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
textBox1.Visible = false;
textBox2.Text = "";
{
if (textBox2.Text == dr.GetString(0).Trim ())
{
if (c.ToString() == textBox3.Text)
SqlDataReader dr = cmd.ExecuteReader();接下来是干嘛使得。。
if (dr.HasRows)
{
while (dr.Read())
}
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
Random df = new Random();
c = df.Next(10000, 90000);
label4.Text = c.ToString();
}
private void button2_Click(object sender, EventArgs e)
SqlConnection cn;
cn=new SqlConnection ();
cn.ConnectionString = "data source=.\\RUANXIAO;Integrated Security=sspi;initial catalog=student;pooling=false";
{
Form7 f7;
{
MessageBox.Show("验证码错误");
{
MessageBox.Show("输入验证码有误");
}
else if (c.ToString() == textBox3.Text && (123456).ToString() != textBox2.Text)
textBox3.Text = "";
Random df = new Random();//取一个随机数
c = df.Next(10000, 90000);//设置随机数的范围
label4.Text = c.ToString();//设置其中一个的情况
textBox3.Text = string.Empty;//这是什么情况，对吧，应该是清空的作用对吧see sharp语言中最经典大的用法。
}
}
{
//Random df = new Random();
//c = df.Next(10000, 90000);
//label4.Text = c.ToString();
{
MessageBox.Show("输入密码错误");
}
else
{
MessageBox.Show("请输入密码和验证吗");
cn.Open ();//打开连接的情况
SqlCommand cmd;
cmd=new SqlCommand ("select 密码 from hh where 用户名= '"+textBox1.Text+"'",cn);
fm.Show();//要记住这中写法
}
else if ((123456).ToString() == textBox2.Text && c.ToString() != textBox2.Text)
public Form5()
{
InitializeComponent();
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
}
}
}
{ 直接去申请一个用户名和密码
Form6 f6;
f6 = new Form6();
f6.Show();//会弹出一个新注册的页面
}
private void Form5_Load(object sender, EventArgs e)
}
private void button1_Click(object sender, EventArgs e)
{
Form2 fm;
if (radioButton1.Checked)
{
}
}
那么这个是干嘛使得呢，其他的几种情况读已经考虑到了
else就是当以粉丝的方式进行登录是所发生的那种情况，也就是当rediobutton2被选中时所呈现的情况。
{
if (c.ToString() == textBox3.Text&&(123456).ToString() == textBox2.Form2();