using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
namespace Sample2
{
class Program
{
private static string _connStr;
static void Main(string[] args)
{
_connStr = "Data Source=localhost;User Id=sa;Password=xxx;Database=xxx;Pooling=true;Max Pool Size=600;Min Pool Size=0;";
SqlDependency.Start(_connStr);//传入连接字符串,启动基于数据库的监听
UpdateGrid();
Console.Read();
}
private static void UpdateGrid()
{
using (SqlConnection connection = new SqlConnection(_connStr))
{
connection.Open();
//依赖是基于某一张表的,而且查询语句只能是简单查询语句,不能带top或*,同时必须指定所有者,即类似[dbo].[]
using (SqlCommand command = new SqlCommand("select D_Id,D_Name,D_Password,D_Else,D_Amount From [dbo].[TestTable]", connection))
{
command.CommandType = CommandType.Text;
SqlDependency dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
using (SqlDataReader sdr = command.ExecuteReader())
{
Console.WriteLine();
while (sdr.Read())
{
Console.WriteLine("{0}---{1}---{2}---{3}---{4}", sdr["D_Id"].ToString(),
sdr["D_Name"].ToString(), sdr["D_Password"].ToString(), sdr["D_Else"].ToString(), sdr["D_Amount"].ToString());
}
sdr.Close();
}
}
}
}
private static void dependency_OnChange(object sender, SqlNotificationEventArgs e)
{
UpdateGrid();
}
}
}
use master
ALTER DATABASE WINE_CLOUD set ENABLE_BROKER
/*
想启用Broker时,出现以下错误:
无法启用数据库 "db2" 中的 Service Broker,因为已存在启用的具有相同 ID 的 Service Broker。
解决办法:
use master
alter database db2 set NEW_BROKER
然后再运行
use master
ALTER DATABASE db2 set ENABLE_BROKER
*/
--验证是否能启用
go
Select DATABASEPROPERTYEX('WINE_CLOUD','IsBrokerEnabled')
--修改数据库使用者(至关重要)
exec sp_changedbowner @loginame = 'sa'