我有SqlTableDependency的问题。当我对期望表进行插入/更新/删除时,不会调用我的Changed方法。 OnStatusChanged事件工作正常。
string conn = @"data source=secret server; integrated security=True; initial catalog=secret db;User id=secret user";
var mapper = new ModelToTableMapper<SqlDataModel>();
mapper.AddMapping(c => c.datavalue, "datavalue");
using (var dep = new SqlTableDependency<SqlDataModel>(conn, "data", mapper))
{
dep.OnChanged += Changed;
dep.OnStatusChanged += OnStatusChanged;
dep.OnError += OnError;
dep.TraceLevel = TraceLevel.Verbose;
dep.TraceListener = new TextWriterTraceListener(Console.Out);
dep.Start();
Console.WriteLine("Press a key to exit");
Console.ReadKey();
dep.Stop();
}
}
static void OnStatusChanged(object sender, StatusChangedEventArgs e)
{
Console.WriteLine(e.ToString());
}
static void OnError(object sender, ErrorEventArgs e)
{
Console.WriteLine(e.ToString());
}
static void Changed(object sender, RecordChangedEventArgs<SqlDataModel> e)
{
if (e.ChangeType != ChangeType.None)
{
var changedEntity = e.Entity;
Console.WriteLine("DML operation: " + e.ChangeType);
Console.WriteLine("value: " + changedEntity.datavalue);
}
}
以上代码我基于https://tabledependency.codeplex.com/wikipage?title=SqlTableDependency
我确定我已经使用db_owner角色。我启用了代理,我看到在mssql db中创建了trigers,services等。
最佳答案
我最终在sys.transmission_queue表中发现错误:
将消息放入目标队列时发生异常。错误:
即使数据库已经我完全授予自己的权限,我仍然没有做
ALTER AUTHORIZATION ON DATABASE::secret db TO sa