Devart Forums

Hi,
it's possible to use Devart Entity Model with Domain Service for realice a WCF RIA Service?

If yes how i can? When i open Domain Service wizard i can't see my entities

Hi,
it's possibile to use this drivers in Embarcadero HTML5 Builder?

Hi,
i've a simple select on two tables: one with 600000 records and other with 7000000. Two tables don't have foreign key.

The query syntax is simple

select field1,
field2,
...,
fieldn
from table1,
table2
where table1.key = table2.key and
table1.field1 = parameter

It take 1 minute for extract 15 rows.

If i add another criteria like rownum <= 1000 it take 2 or 3 second for the same 15 rows.

What it can be?

Can you explain me with an example about this full control?

It seems also that the Oracle query of the Entity Framework is more optimized then the Linq To Oracle Query and you have more control on the query that is generated.

It's only my impression or this is true?

The uninstall procedure don't remove all .dll in windows\assembly.

Windows 7 Ultimate 64bit.

I've discovered that this happen when i set the auto-sync property of the property of the entity to Always.

Hi,
i'm trying to resolve concurrency situations in my application, but when i generate a concurrency situation and i call SubmitChanges on my DataContext i receive this exception.

What can be?

Ver. 5.35.54

System.NullReferenceException non è stata gestita
Message="Riferimento a un oggetto non impostato su un'istanza di oggetto."
Source="System.Data.Linq"
StackTrace:
in System.Data.Linq.Mapping.MetaAccessor`2.SetBoxedValue(Object& instance, Object value)
in Devart.Data.Linq.v.a(MetaType A_0, q A_1, Object A_2, ModifiedMemberInfo[] A_3, Boolean A_4)
in Devart.Data.Linq.f.a(b A_0, Object A_1, ModifiedMemberInfo[] A_2, Boolean A_3)
in Devart.Data.Linq.k.a(f A_0, b A_1, Boolean A_2)
in Devart.Data.Linq.k.a(DataContext A_0, ConflictMode A_1)
in Devart.Data.Linq.k.b(DataContext A_0, ConflictMode A_1)
in Devart.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode)
in Devart.Data.Linq.DataContext.SubmitChanges()
in MagazzinoBC.XtraForm_EditSettori.barLargeButtonItem_Salva_ItemClick(Object sender, ItemClickEventArgs e) in C:\Progetti\MagazzinoBC\MagazzinoBC\XtraForm_EditSettori.cs:riga 56
in DevExpress.XtraBars.BarItem.OnClick(BarItemLink link)
in DevExpress.XtraBars.BarItemLink.OnLinkClick()
in DevExpress.XtraBars.ViewInfo.BarSelectionInfo.UnPressLink(BarItemLink link)
in DevExpress.XtraBars.Controls.CustomLinksControl.OnMouseUp(MouseEventArgs e)
in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
in System.Windows.Forms.Control.WndProc(Message& m)
in DevExpress.XtraBars.Controls.DockedBarControl.WndProc(Message& msg)
in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
in System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
in System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
in System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
in System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
in System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
in System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
in MagazzinoBC.XtraForm_Tabelle_EditComplesso.ModificaRecord() in C:\Progetti\MagazzinoBC\MagazzinoBC\XtraForm_EditTabelle.cs:riga 176
in MagazzinoBC.XtraForm_Tabelle_EditComplesso.barLargeButtonItem_Modifica_ItemClick(Object sender, ItemClickEventArgs e) in C:\Progetti\MagazzinoBC\MagazzinoBC\XtraForm_EditTabelle.cs:riga 141
in DevExpress.XtraBars.BarItem.OnClick(BarItemLink link)
in DevExpress.XtraBars.BarItemLink.OnLinkClick()
in DevExpress.XtraBars.ViewInfo.BarSelectionInfo.UnPressLink(BarItemLink link)
in DevExpress.XtraBars.Controls.CustomLinksControl.OnMouseUp(MouseEventArgs e)
in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
in System.Windows.Forms.Control.WndProc(Message& m)
in DevExpress.XtraBars.Controls.DockedBarControl.WndProc(Message& msg)
in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
in System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
in System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
in System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
in System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
in System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
in MagazzinoBC.Program.Main() in C:\Progetti\MagazzinoBC\MagazzinoBC\Program.cs:riga 18
in System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
in System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
in Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
in System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
in System.Threading.ThreadHelper.ThreadStart()
InnerException:

Ok, thanks, we go back to the older version

Try to see DataLoadOptions

How nearest?

News?

Hi,
i've downloaded the 5.35 final version.

When i try to add a new item to my table and i do SaveChanges i receive this error:

System.Data.UpdateException è stata individuata
Message="Errore durante l'aggiornamento delle voci. Per ulteriori informazioni, vedere InnerException."
Source="System.Data.Entity"
StackTrace:
in System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)
in System.Data.Objects.ObjectContext.SaveChanges(Boolean acceptChangesDuringSave)
in MagazzinoBC.XtraForm_EditCategorieProdotto.barLargeButtonItem_Salva_ItemClick(Object sender, ItemClickEventArgs e) in C:\Progetti\MagazzinoBC_EF\MagazzinoBC\XtraForm_EditCategorieProdotto.cs:riga 50
InnerException: System.Data.EntityCommandCompilationException
Message="Errore durante la preparazione della definizione del comando. Per ulteriori informazioni, vedere l'eccezione interna."
Source="System.Data.Entity"
StackTrace:
in System.Data.Mapping.Update.Internal.UpdateTranslator.CreateCommand(DbModificationCommandTree commandTree)
in System.Data.Mapping.Update.Internal.DynamicUpdateCommand.CreateCommand(UpdateTranslator translator, Dictionary`2 identifierValues)
in System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary`2 identifierValues, List`1 generatedValues)
in System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)
InnerException: System.ArgumentException
Message="Can not convert."
Source="Devart.Data.Oracle"
StackTrace:
in Devart.Data.Oracle.OracleUtils.a(Object A_0, OracleDbType A_1, Boolean A_2)
in Devart.Data.Oracle.Entity.c.Clone()
in Devart.Data.Oracle.Entity.h.a.o()
in System.Data.Common.DbCommandDefinition.CreateCommandDefinition(DbCommand prototype)
in Devart.Data.Oracle.Entity.OracleEntityProviderServices.CreateDbCommandDefinition(DbProviderManifest providerManifest, DbCommandTree commandTree)
in System.Data.Common.DbProviderServices.CreateCommand(DbCommandTree commandTree)
in System.Data.Mapping.Update.Internal.UpdateTranslator.CreateCommand(DbModificationCommandTree commandTree)
InnerException:

What can be?

When i can download the new complete version from my account?

Yeah, i've find this ...

Thanks a lot!!!