Hi I got the following stack trace from one of my windows phone 8 applications which was called from the background agent called ScheduledTaskAgent1 while call a routine UpdateUI() from what I can gather:
Frame Image Function
Offset
0 Microsoft.Phone.Data.Internal.ni.dll System.Data.SqlServerCe.SqlCeConnection.Open
0x00000534
1 Microsoft.Phone.Data.Internal.ni.dll System.Data.SqlServerCe.SqlCeConnection.Open
0x00000006
2 System.Data.Linq.ni.dll System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection
0x0000008c
3 System.Data.Linq.ni.dll System.Data.Linq.SqlClient.SqlProvider.Execute
0x00000038
4 System.Data.Linq.ni.dll System.Data.Linq.SqlClient.SqlProvider.ExecuteAll
0x00000080
5 System.Data.Linq.ni.dll System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute
0x0000026c
6 System.Data.Linq.ni.dll System.Data.Linq.DataQuery_1[[System.__Canon,_mscorlib]].System.Linq.IQueryProvider.Execute[[System.__Canon,_mscorlib]]
0x00000040
7 System.Core.ni.dll System.Linq.Queryable.FirstOrDefault[[System.__Canon,_mscorlib]]
0x00000106
8 ScheduledTaskAgent1.ni.DLL ScheduledTaskAgent1.ScheduledAgent.UpdateUI
0x0000020a
9 ScheduledTaskAgent1.ni.DLL ScheduledTaskAgent1.ScheduledAgent.OnInvoke
0x00000078
10 Microsoft.Phone.ni.dll Microsoft.Phone.Scheduler.ScheduledTaskAgent.Invoke
0x00000432
11 Microsoft.Phone.ni.dll Microsoft.Phone.BackgroundAgentDispatcher+AgentRequest.Invoke
0x00000344
12 Microsoft.Phone.ni.dll Microsoft.Phone.BackgroundAgentDispatcher.InvocationThread
0x00000080
13 mscorlib.ni.dll System.Threading.ThreadHelper.ThreadStart_Context
0x0000008a
14 mscorlib.ni.dll System.Threading.ExecutionContext.RunInternal
0x00000088
15 mscorlib.ni.dll System.Threading.ExecutionContext.Run
0x00000010
16 mscorlib.ni.dll System.Threading.ExecutionContext.Run
0x00000042
17 mscorlib.ni.dll System.Threading.ThreadHelper.ThreadStart
0x00000042
I am trying to understand what this means and the routine for UpdateUI() is as follows:
private void UpdateUI()
{
// all variables I have commented out
// Get the database context
using (db context = new db(ConnectionString))
{
try
{
strTest = (from c in context.Setting
where c.Code == "TEST"
select c.Value).FirstOrDefault();
}
catch (Exception)
{
// Do nothing for now
}
}
// Get database context
using (db context = new db(ConnectionString))
{
try
{
My_template dbMy_template = new My_template();
dbMy_template.myDate = System.DateTime.Now.ToString();
dbMy_template.myValue= myInt.ToString();
context.My_template.InsertOnSubmit(dbMy_template);
context.SubmitChanges();
}
catch (Exception ex)
{
// Do nothing for now
}
}
}Thank you for all your help on this.