1、MainWindow.xaml 面板

<Window x:Class="Test.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:Test"mc:Ignorable="d"Title="MainWindow" Height="350" Width="525" WindowState="Maximized"><Grid ><DockPanel><Menu DockPanel.Dock="Top"><MenuItem Header="文件"><MenuItem Header="打开"></MenuItem></MenuItem><MenuItem Header="编辑"><MenuItem Header="复制"></MenuItem></MenuItem><MenuItem x:Name="About" Header="关于我们" Click="About_Click"></MenuItem><MenuItem x:Name="Update" Header="更新" Click="Update_Click"></MenuItem><MenuItem x:Name="Chaxun" Header="查询1" Click="Chaxun_Click"></MenuItem><MenuItem x:Name="Chaxun2" Header="查询2" Click="Chaxun2_Click"></MenuItem></Menu><TextBox DockPanel.Dock="Left"></TextBox><TextBox DockPanel.Dock="Right"></TextBox><TextBox DockPanel.Dock="Bottom"></TextBox><Button Content="左" DockPanel.Dock="Left"></Button><Button Content="右" DockPanel.Dock="Right"></Button></DockPanel></Grid></Window>

2、MainWindow.xaml.cs 事件

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Collections;
using System.Data;namespace Test
{/// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();}private void About_Click(object sender, RoutedEventArgs e){//AboutWindow abw = new AboutWindow();//abw.ShowDialog();SqlHelper sh = new SqlHelper();SqlParameter[] pars = new SqlParameter[] {new SqlParameter("@name", "赵六"),new SqlParameter("@id", "1")};string sql = "UPDATE user1 SET name=@name WHERE id=@id";int count = sh.ExcuteSQLReturnInt(sql, pars);MessageBox.Show("更新了 "+count+" 条数据");}private void Update_Click(object sender, RoutedEventArgs e){//连接字符串（可以在左边服务器资源管理器里自动生成）：//Data source=服务器名（IP地址）\实例名;//Initial Catalog=数据库名;//Integrated Security=True    集成身份验证//User ID=xxx;Password=xxx    用户名密码登陆string constr = @"Data source=LENOVO-PC;Initial Catalog=test;Integrated Security=False;User ID=sa;Password=root";using (SqlConnection con = new SqlConnection(constr)){string sql = "UPDATE user1 SET name='wwwww' WHERE id=1 ";using (SqlCommand cmd = new SqlCommand(sql, con)){if (con.State == System.Data.ConnectionState.Closed){con.Open();}int r = cmd.ExecuteNonQuery();con.Close();MessageBox.Show("已成功修改"+r+"条语句");}}}private void Chaxun_Click(object sender, RoutedEventArgs e){SqlHelper sh = new SqlHelper();SqlParameter[] pars = new SqlParameter[] {new SqlParameter("@pwd", "bbbbbb")};string sql = "SELECT * FROM user1 WHERE pwd=@pwd";ArrayList DataList = sh.DataList(sql, pars);foreach(ArrayList list in DataList){foreach (Object obj in list){MessageBox.Show(obj.ToString());}}            }private void Chaxun2_Click(object sender,RoutedEventArgs e){SqlHelper sh = new SqlHelper();SqlParameter[] pars = new SqlParameter[]{new SqlParameter("@pwd","bbbbbb")};string sql = "SELECT * FROM user1 WHERE pwd=@pwd";ArrayList list = sh.DataSet(sql,pars);foreach(DataRow rows in list){MessageBox.Show(rows["name"].ToString());}}}
}

3、SqlHelper.cs  ado.net封装类

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Collections;
using System.Data;namespace Test
{//操作数据库方法class SqlHelper{public string MyConnString{get{return @"Data source=LENOVO-PC;Initial Catalog=test;Integrated Security=False;User ID=sa;Password=root";}}//执行insert,update,delete命令//返回受影响的行数public int ExcuteSQLReturnInt(string sql,SqlParameter[] pars){SqlConnection conn = new SqlConnection(MyConnString);try{                SqlCommand cmd = new SqlCommand(sql, conn);if (conn.State == System.Data.ConnectionState.Closed || conn.State == System.Data.ConnectionState.Broken){conn.Open();}if(pars!=null && pars.Length > 0){foreach (SqlParameter p in pars){cmd.Parameters.Add(p);}}int count = cmd.ExecuteNonQuery();return count;}catch (Exception ex){return 0;}finally{conn.Close();}}//查询select public ArrayList DataList(string sql,SqlParameter[] pars){SqlConnection conn = new SqlConnection(MyConnString);SqlCommand cmd = new SqlCommand(sql,conn);if (conn.State == System.Data.ConnectionState.Closed || conn.State == System.Data.ConnectionState.Broken){conn.Open();}if (pars != null && pars.Length > 0){foreach (SqlParameter p in pars){cmd.Parameters.Add(p);}}SqlDataReader reader = cmd.ExecuteReader();ArrayList list = new ArrayList();while (reader.Read()){ArrayList list1 = new ArrayList();for (int i = 0; i< reader.FieldCount; i++){list1.Add(reader[i]);                    }list.Add(list1);  }conn.Close();return list;}//查询selectpublic ArrayList DataSet(string sql,SqlParameter[] pars){SqlConnection conn = new SqlConnection(MyConnString);SqlCommand cmd = new SqlCommand(sql,conn);if (conn.State == System.Data.ConnectionState.Closed || conn.State == System.Data.ConnectionState.Broken){conn.Open();}if (pars != null && pars.Length > 0){foreach (SqlParameter p in pars){cmd.Parameters.Add(p);}}SqlDataAdapter adapter = new SqlDataAdapter(cmd);DataSet dataset = new DataSet();adapter.Fill(dataset);DataTable table = dataset.Tables[0];DataRowCollection rows = table.Rows;ArrayList list = new ArrayList();for(int i = 0; i < rows.Count; i++){DataRow row = rows[i];list.Add(row);}return list;}}
}