2.0注册界面

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace 物业管理登录页面
{
    public partial class register : Form
    {
        public register()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text==""||textBox2.Text=="" || textBox3.Text == "" || textBox4.Text == "" || textBox5.Text == "" )
            {
                MessageBox.Show("每个字段都是必填字段！","提示");
            }
            else
            {
                if (textBox3.Text!=textBox4.Text)
                {
                    MessageBox.Show("两次输入的密码不同！", "提示");
                }
                else
                {
                    //连接数据库
                    string str = "server=.;database=Community system;Integrated Security=true";
                    //创建连接对象
                    SqlConnection conn = new SqlConnection(str);
                    //打开数据库
                    conn.Open();
                    if (radioButton4.Checked == true)
                    {
                        //sql语句
                        string sql = "insert into userphone values('" + textBox1.Text + "','" + textBox3.Text + "')";
                        SqlCommand cmd = new SqlCommand(sql, conn);
                        int x = cmd.ExecuteNonQuery();
                        if (x > 0)
                        {
                            MessageBox.Show("注册成功");
                            this.Close();
                        }
                        else
                        {
                            MessageBox.Show("注册失败");
                        }
                    }
                    if (radioButton3.Checked == true)
                    {
                        string sql = "insert into Adphone values('" + textBox1.Text + "','" + textBox3.Text + "')";
                        SqlCommand cmd = new SqlCommand(sql, conn);
                        int x = cmd.ExecuteNonQuery();
                        if (x > 0)
                        {
                            MessageBox.Show("注册成功");
                            this.Close();
                        }
                        else
                        {
                            MessageBox.Show("注册失败");
                        }
                    }
                }
            }
        }

        private void textBox3_TextChanged(object sender, EventArgs e)
        {
            this.textBox3.PasswordChar = '*';
        }

        private void textBox4_TextChanged(object sender, EventArgs e)
        {
            this.textBox4.PasswordChar = '*';
        }
    }
}