我有以下代码对数据库View执行SqlCommand：
public IEnumerable<PickNote> GetData()
{
using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["BTNInternalData_LiveEntities"].ConnectionString))
{
connection.Open();
using (var command = new SqlCommand(@"SELECT [PICKINGROUTEID],[CUSTOMER],[SALESNAME]
FROM [dbo].[PickScreenData] WHERE DATEADD(dd, 0, DATEDIFF(dd, 0, [ACTIVATIONDATETIME])) = DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE())) or [EXPEDITIONSTATUS] = 3", connection))
{
// Make sure the command object does not already have
// a notification object associated with it.
command.Notification = null;
var dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
if (connection.State == ConnectionState.Closed)
connection.Open();
using (var reader = command.ExecuteReader())
{
var data = reader.Cast<IDataRecord>();
return data.Select(x => new PickNote
{
pickingRouteId = x["PICKINGROUTEID"].ToString()
}).ToList();
}
}
}
}
private void dependency_OnChange(object sender, SqlNotificationEventArgs e)
{
// do stuff
}
但是，dependency_OnChange方法仅在我的应用程序开始时调用，并且无论我的视图中的数据是否发生更改，都不会再次调用Invalid方法。我调试了SqlNotificationEventArgs并且Info是SqlNotificationEventArgs.Info但是我不确定为什么命令查询运行正常
我更改了查询，以便直接查询表格，但Invalid仍然说public IEnumerable<PickNote> GetData()
{
using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["AXLive"].ConnectionString))
{
connection.Open();
using (var command = new SqlCommand(@"
SELECT PICKINGROUTEID, EXPEDITIONSTATUS
FROM [dbo].[WMSPICKINGROUTE]
WHERE (EXPEDITIONSTATUS <> 20)
AND (DATEADD(dd, 0, DATEDIFF(dd, 0, [ACTIVATIONDATETIME])) = DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE()))
OR [EXPEDITIONSTATUS] = 3)", connection))
{
// Make sure the command object does not already have
// a notification object associated with it.
command.Notification = null;
var dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
if (connection.State == ConnectionState.Closed)
connection.Open();
using (var reader = command.ExecuteReader())
{
var data = reader.Cast<IDataRecord>();
return data.Select(x => new PickNote
{
pickingRouteId = x["PICKINGROUTEID"].ToString()
}).ToList();
}
}
}
}
。这是新代码：
WMSPICKINGROUTE{{1}}是我的视图从之前获取数据的表。