主页面/GuanLiYuan.cs

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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 PropertyManagementSystem
{
    public partial class GuanLiYuan : Form
    {
        public GuanLiYuan()
        {
            InitializeComponent();
        }

        private void GuanLiYuan_Load(object sender, EventArgs e)
        {
            string sql = "select id,userName,userPwd,companyName,companyAddress,phone,name,userGender,userAge,IDCard,mailBox, iif((loginType=0),'超级管理员','普通管理员')loginType from Users where loginType = '2'";
            this.dataGridView1.DataSource =  DBHelper.GetDataSet(sql).Tables[0];
        }


        private void label3_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            string name = this.textBox1.Text.ToString().Trim();
            string phone = this.textBox2.Text.ToString().Trim();
            string sex = "";
            if (radioButton1.Checked)
            {
                sex = "男";
            }
            else
            {
                sex = "女";
            }
            try
            {
                string sql = string.Format("select id,userName,userPwd,companyName,companyAddress,phone,name,userGender,userAge,IDCard,mailBox, iif((loginType=0),'超级管理员','普通管理员')loginType from Users where userName like '%"+name+"%' and phone like '%"+phone+"%' and userGender like '%"+sex+"%'");
                this.dataGridView1.DataSource = DBHelper.GetDataSet(sql).Tables[0];
            }
            catch (Exception ex)
            {
                   MessageBox.Show("加载时发生错误！请联系系统管理员\n原因：" + ex.Message, "错误信息");
            }
        }

        private void 删除ToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            string id = this.dataGridView1.SelectedRows[0].Cells["id"].Value.ToString();
            DialogResult r = MessageBox.Show("您确定要删除吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            if (r == DialogResult.Yes)