DevForce Community Forum : ComboBox Binding in a DataForm

ComboBox Binding in a DataForm : Ok, Here is what I have The...

Thu, 26 Aug 2010 05:50:54 -700

Author: wwlgray
Subject: 2074
Posted: 26-Aug-2010 at 5:50am

Ok, Here is what I have

The dataform is in a child window popup. At form load I set the CurrentItem to the item I want to work on. In the Xaml I have a static resource of an ObservableColletion as my itemsource. I have set in Xaml the SelectedValue and SelectedItem to my CurrentItem.Status_FK and the SelectedValuePath to the StatusCode_PK of the object as shown below.

ItemsSource="{Binding StatusLookups, Source={StaticResource statusLookups},Mode=TwoWay}"
SelectedItem="{Binding Path=CurrentItem.Status_FK}"
SelectedValue="{Binding Path=Status_FK,Mode=TwoWay}"
SelectedValuePath="StatusCode_PK"
DisplayMemberPath="Description" />

On formload I set the dataform to edit. The currentitem.status_fk is not shown in the combobox.

this.projForm.CurrentItem = CurrentProject; // where the CurrentProject is the mainform selected item.

this.projForm.BeginEdit();

ComboBox Binding in a DataForm : Here is a sample of one that I...

Wed, 25 Aug 2010 09:37:17 -700

Author: BillG
Subject: 2074
Posted: 25-Aug-2010 at 9:37am

Here is a sample of one that I have done. It works fine.

ItemsSource="{Binding Vendors}" DisplayMemberPath="VendorName" Style="{x:Static Office2007:Office2007BlueResources.ComboBoxStyle}" SelectedValuePath="VendorId" Grid.Column="4" Grid.Row="0" SelectedValue="{Binding Path=CurrentItem.VendorId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, NotifyOnValidationError=True, ValidatesOnDataErrors=True, ValidatesOnExceptions=True}" IsSynchronizedWithCurrentItem="True" Width="170" HorizontalAlignment="Left" Height="20" TabIndex="4" />

In my view code behind in my loaded event I have the following statement.

this.DataContext = aModel aModel is an object of the InventoryViewModel

in my VendorViewModel I have a private property called currentItem which has a public getter/setter called CurrentItem. currentItem contains the current Inventory item being worked on.

Bill

ComboBox Binding in a DataForm : Yes I have watched the video....

Wed, 25 Aug 2010 07:04:18 -700

Author: wwlgray
Subject: 2074
Posted: 25-Aug-2010 at 7:04am

Yes I have watched the video. Is there a sample with that code? I have tried it and it is not working for me.

ComboBox Binding in a DataForm : Did you take a look at this link...

Thu, 19 Aug 2010 17:25:04 -700

Author: ting
Subject: 2074
Posted: 19-Aug-2010 at 5:25pm

Did you take a look at this link which shows how to work with ComboBoxes?:

http://www.ideablade.com/Videos/SamplesGrabBag/index.html

ComboBox Binding in a DataForm : I have 2 tables that I am binding...

Wed, 18 Aug 2010 13:26:01 -700

Author: wwlgray
Subject: 2074
Posted: 18-Aug-2010 at 1:26pm

I have 2 tables that I am binding to a combobox inside a DataForm. The first table is the Collection built from the Devforce entity and the second is a lookup table brought into a static resource.

With the code below the combobox selects and updates the data, however when the dataform is bound we cannot get the current value to display. I need the current value to show when the form loads.

<ComboBox Name="cmbStatus"

ItemsSource="{Binding StatusLookups,Source={StaticResource statusLookups}}"

DisplayMemberPath="Description"

SelectedItem="{Binding Path=Status_FK,Mode=TwoWay}"

SelectedValuePath="StatusCode_PK"/>