C# 与数据库的连接丢失时，服务停止
我用C#编写了一个服务，它运行并更新CRM解决方案。我正试图让服务重新建立与数据库的连接，如果它因某种原因而中断。到目前为止，当我分离数据库并重新连接它时，服务会自行停止。。另一件事是，然后我分离数据库，我的同步应用程序没有记录任何异常-它只是停止死亡 我调用同步的部分类：C# 与数据库的连接丢失时，服务停止,c#,service,C#,Service,我用C#编写了一个服务，它运行并更新CRM解决方案。我正试图让服务重新建立与数据库的连接，如果它因某种原因而中断。到目前为止，当我分离数据库并重新连接它时，服务会自行停止。。另一件事是，然后我分离数据库，我的同步应用程序没有记录任何异常-它只是停止死亡 我调用同步的部分类： namespace Vessel_Schedule_Synch { [DisplayName("CRM Vessel Synch")] partial class st
namespace Vessel_Schedule_Synch
{
[DisplayName("CRM Vessel Synch")]
partial class startVessel : ServiceBase
{
System.Threading.Timer t;
VesselUpdater v;
protected override void OnStart(string[] args)
{
//System.Threading.Thread.Sleep(20000);
v = new VesselUpdater();
t = new System.Threading.Timer(new System.Threading.TimerCallback(t_TimerCallback), null, 0, 300000);
//InfoLogger.Info("Starting service " + this.ServiceName, true);
}
private void t_TimerCallback(object state)
{
t.Change(Timeout.Infinite, Timeout.Infinite);
lock (v)
{
InfoLogger.Info("Timer fired... updating vessels");
try
{
v.Process();
v.updateCRM();
}
catch (Exception e)
{
if (v == null)
{ throw e; }
else
{
InfoLogger.Exception(e);
}
}
finally
{
InfoLogger.Info("End of Timer Trigger... Restarting Timer.");
t.Change(30000, 30000);
}
}
}
protected override void OnStop()
{
InfoLogger.Info("Service Stopped " + this.ServiceName, true);
}
}
}
namespace Vessel_Schedule_Synch
{
class VesselUpdater
{
private OrganizationServiceProxy _serviceProxy;
private IOrganizationService _service;
private Logger logger = LogManager.GetLogger("VesselUpdater");
public string ConnectionString { get; set; }
public string ServiceUrl { get; set; }
int i = 0;
private bool InitialiseCRMConnection;
public VesselUpdater()
{
InitialiseCRMConnection = true;
Console.WriteLine("Starting the service");
LogMessage("Starting service");
ServiceUrl = ConfigurationManager.AppSettings["CRMUrl"];
LogMessage(ConnectionString);
ConnectionString = ConfigurationManager.ConnectionStrings["iRoot"].ConnectionString;
LogMessage(ServiceUrl);
Console.WriteLine(ServiceUrl);
}
public void Process()
{
if (!InitialiseCRMConnection)
return;
LogMessage("Process Starting");
ClientCredentials UserCredentials = new ClientCredentials();
string UserName = ConfigurationManager.AppSettings["User"];
string Password = ConfigurationManager.AppSettings["Password"];
UserCredentials.UserName.UserName = UserName;
UserCredentials.UserName.Password = Password;
ClientCredentials DivCredentials = null;
Uri HomeRealmURI = null;
Uri serviceurl = new Uri(ServiceUrl);
_serviceProxy = new OrganizationServiceProxy(serviceurl, HomeRealmURI, UserCredentials, DivCredentials);
_serviceProxy.ServiceConfiguration.CurrentServiceEndpoint.Behaviors.Add(new ProxyTypesBehavior());
_service = (IOrganizationService)_serviceProxy;
_serviceProxy.EnableProxyTypes();
LogMessage("CRM Connection Initiated");
InitialiseCRMConnection = false;
}
public void updateCRM()
{
try
{
ProcessVesselSchedule("Insert");
ProcessVesselSchedule("Modification");
}
catch (Exception e)
{
InitialiseCRMConnection = true;
InfoLogger.Exception(e);
LogMessage("Exception " + e);
}
}
private void ProcessVesselSchedule(string Type)
{
if (InitialiseCRMConnection)
return;
try
{
LogMessage(string.Format("Processing Vessesl Schedules {0}", Type));
using (SqlConnection con = new SqlConnection(ConnectionString))
{
SqlCommand cmd = new SqlCommand("VesselScheduleInformation", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@Type", Type);
con.Open();
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
try
{
LogMessage("Processing Record");
LogMessage(dr["new_Name"].ToString());
string Name = dr["new_Name"].ToString() + " " + dr["new_VoyageNo"].ToString();
string Vesselname = dr["new_Name"].ToString();
int LineNo = (int)dr["Line Number"];
string NAVVesselScheduleCode = dr["new_NAVVesselScheduleCode"].ToString();
string CarrierService = dr["new_CarrierService"].ToString();
string ETA = dr["new_ETA"].ToString();
string ETD = dr["new_ETD"].ToString();
string VesselCode = dr["new_Vessel"].ToString();//Vessel Code
string VoyageNo = dr["new_VoyageNo"].ToString();
string TranshipmentVessel = dr["new_TranshipmentVessel"].ToString();
string TranshipmentVoyageNo = dr["new_TranshipmentVoyageNo"].ToString();
string Port = dr["new_Port"].ToString();
string PortOfDis = dr["new_DischargePort"].ToString();
string PortOfLoad = dr["new_LoadPort"].ToString();
//string StackStart = dr["new_StackStart"].ToString();
//string StackEnd = dr["new_StackEnd"].ToString();
bool Create = false;
LogMessage("Assigned all variables");
Console.WriteLine("Assigned all variables");
new_vesselschedule VesselS = FindVessleSchedule(NAVVesselScheduleCode, LineNo, out Create);
//if (DateTime.Parse(StackStart).ToUniversalTime() >= DateTime.Parse("1900-01-01"))
//{
// VesselS["new_stackstart"] = DateTime.Parse(StackStart).ToUniversalTime();
//}
//if (DateTime.Parse(StackEnd).ToUniversalTime() >= DateTime.Parse("1900-01-01"))
//{
// VesselS["new_stackend"] = DateTime.Parse(StackEnd).ToUniversalTime();
//}
VesselS.new_name = Name;
VesselS.new_navvesselschedulecode = NAVVesselScheduleCode;
VesselS.new_CarrierService = CarrierService;
if (DateTime.Parse(ETA).ToUniversalTime() >= DateTime.Parse("1900-01-01"))
{
VesselS.new_ETA = DateTime.Parse(ETA).ToUniversalTime();
}
if (DateTime.Parse(ETD).ToUniversalTime() >= DateTime.Parse("1900-01-01"))
{
VesselS.new_ETD = DateTime.Parse(ETD).ToUniversalTime();
}
VesselS.new_vesselcodeimport = VesselCode;
VesselS.new_vesselnameimport = Vesselname;
VesselS.new_VoyageNo = VoyageNo;
VesselS.new_TransshipmentVessel = TranshipmentVessel;
VesselS.new_TransshipmentVoyageNo = TranshipmentVoyageNo;
VesselS.new_dischargeportimport = PortOfDis;
VesselS.new_loadportimport = PortOfLoad;
if (Create)
{
LogMessage(string.Format("Created {0} {1}", NAVVesselScheduleCode, LineNo));
_serviceProxy.Create(VesselS);
}
else
{
LogMessage(string.Format("Updated {0} {1}", NAVVesselScheduleCode, LineNo));
_serviceProxy.Update(VesselS);
}
using (SqlCommand cmdUpdateMates = new SqlCommand())
{
SqlConnection con2 = new SqlConnection(ConnectionString);
con2.Open();
cmdUpdateMates.Connection = con2;
cmdUpdateMates.CommandText = "ProcessedVessSched";
cmdUpdateMates.CommandType = CommandType.StoredProcedure;
cmdUpdateMates.Parameters.AddWithValue("@VesselSched", NAVVesselScheduleCode);
cmdUpdateMates.Parameters.AddWithValue("@LineNo", LineNo);
cmdUpdateMates.ExecuteNonQuery();
i++;
Console.WriteLine("Created/Updated" + " " + i);
}
}
catch (Exception e)
{
InitialiseCRMConnection = true;
InfoLogger.Exception(e);
LogMessage("Exception " + e);
}
}
}
}
catch (SqlException e)
{
InfoLogger.Exception(e);
LogMessage("SQL Exception " + e);
}
catch (Exception e)
{
InitialiseCRMConnection = true;
InfoLogger.Exception(e);
LogMessage("Exception " + e);
}
}
public void LogMessage(string Message)
{
LogEventInfo myEvent = new LogEventInfo(LogLevel.Debug, "", Message);
myEvent.LoggerName = logger.Name;
logger.Log(myEvent);
}
private new_vesselschedule FindVessleSchedule(string NAVVesselScheduleCode, int LineNo, out bool Create)
{
QueryExpression query = new QueryExpression(new_vesselschedule.EntityLogicalName);
query.ColumnSet.AllColumns = true;
query.Criteria = new FilterExpression();
query.Criteria.AddCondition("new_navvesselschedulecode", ConditionOperator.Equal, NAVVesselScheduleCode);
query.Criteria.AddCondition("new_lineno", ConditionOperator.Equal, LineNo);
EntityCollection entitycollection = _serviceProxy.RetrieveMultiple(query);
if (entitycollection.Entities.Count == 0)
{
new_vesselschedule n = new new_vesselschedule();
n.new_navvesselschedulecode = NAVVesselScheduleCode;
n.new_lineno = LineNo;
Create = true;
return n;
}
Create = false;
return (new_vesselschedule)entitycollection.Entities[0];
}
}
}
我是不是遗漏了什么 我在代码中发现问题，我忘记发送InitialiseCRMConnection=true；因此，在我的SQL异常中，它永远无法重新初始化连接，因为它总是返回 修正：
catch (SqlException e)
{
InitialiseCRMConnection = true;
InfoLogger.Exception(e);
LogMessage("SQL Exception " + e);
}