I'm trying to work with the LLBLGenProDataSource control in the "disconnected" mode with LivePersistence=false. Could somebody post an example on how to make this work? The documentation comes without a complete example. I'm trying to create a search form where the DS is not loading the collection at page load.

Thanks, Catalin

Hi,

with LivePersistence=false, you have to implement the perfomDbCount, performSelect and performWork events.

there is a quick exemple :

        Private Sub dsMappingSets_PerformGetDbCount(ByVal sender As Object, ByVal e As SD.LLBLGen.Pro.ORMSupportClasses.PerformGetDbCountEventArgs2) Handles dsMappingSets.PerformGetDbCount
            e.DbCount = e.ContainedCollection.Count
        End Sub

        Private Sub dsMappingSets_PerformSelect(ByVal sender As Object, ByVal e As SD.LLBLGen.Pro.ORMSupportClasses.PerformSelectEventArgs2) Handles dsMappingSets.PerformSelect
            Dim adapter As New DataAccessAdapter

            Using adapter
                adapter.FetchEntityCollection(e.ContainedCollection, e.Filter)
            End Using

        End Sub

        Private Sub dsMappingSets_PerformWork(ByVal sender As Object, ByVal e As SD.LLBLGen.Pro.ORMSupportClasses.PerformWorkEventArgs2) Handles dsMappingSets.PerformWork
            Try
                For Each element As UnitOfWorkElement2 In e.Uow.GetEntityElementsToDelete
                    Dim mappingSet As MlmappingSetEntity = CType(element.Entity, MlmappingSetEntity)
                    MappingController.Delete(mappingSet)
                Next

                For Each element As UnitOfWorkElement2 In e.Uow.GetEntityElementsToUpdate
                    Dim mappingSet As MlmappingSetEntity = element.Entity

                    Aricie.Modules.ModuleLocalizer.Services.EntityHelper.InitEntityUpdate(mappingSet, Me.UserInfo)
                Next

                e.Uow.Commit(New DataAccessAdapter, True)

            Catch ex As Exception
                ProcessModuleLoadException(Me, ex)
            End Try

        End Sub

I'm doing something similar but I can't see the results in the grid. Here is my code

    protected void btnLoadOrders_Click(object sender, EventArgs e)
    {
        llbldsOrderHeader.Select();

        llbldsOrderHeader.DataBind();
     }

    protected void llbldsOrderHeader_PerformSelect(object sender, SD.LLBLGen.Pro.ORMSupportClasses.PerformSelectEventArgs e)
    {
        e.ContainedCollection.GetMulti(null);
    }

    protected void llbldsOrderHeader_PerformGetDbCount(object sender, SD.LLBLGen.Pro.ORMSupportClasses.PerformGetDbCountEventArgs e)
    {
        e.DbCount = e.ContainedCollection.Count;
    }

Please try the following:

protected void btnLoadOrders_Click(object sender, EventArgs e)
    {
        llbldsOrderHeader.Refetch = true;
        gridView1.DataSource = llbldsOrderHeader;
     }

Still no go The data binding is not taking place.

I was wondering if somebody can include a full working sample with LLBL. All sample applications provided with LLBL are using LivePersistence=True which will not work in all scenarios.

Hi,

can you provide some more code from your ascx file. Both code samples from Aurelien and Walaa should work so I suspect there is something wrong with your controls declaration.

As for the full app example, I think you'll find some databinding with livepersistence= false in the HnD (the source code for that very forum), and there will be more detailed samples soon provided with the next release.

Cheers

I've got this working by doing all the data binding manually in the grid view control.