HI,

 I am just following upu on this forum post.

 Please let me know if you need further assistance regarding this issue.

 Sincerely,
Matt
 Developer Support Engineer

HI,

 Are you saying that the ComboBox has no dropdown data? Is it an empty dropdown?

 If that is the case, it  could be your ItemSource Bindng. In my sample I am binding.to a static resource.

 Are you getting any bindng errors in the output window when you debug?

Sincerely,

 Matt
Developer Support Engineer

It is also faced with similar problems ...
The dropdown list shows a list of items, but when I select an item from the drop-down list, it is not updated in the field, and when I triggered the event DataGridRecordUpdating (object sender, RecordUpdatingEventArgs e)

var item = e.Record.DataItem;

var res = DoUpdate(ref item);

but the item.Manufacturer = null 

The result is that I can not save changes to the database

My DataGrid xaml

<igDP:XamDataGrid HorizontalAlignment="Stretch" Name="xamDataGridAtmModels" VerticalAlignment="Stretch" Grid.Row="1" GroupByAreaLocation="None"                                                    

                          ActiveDataItem="{Binding Path=SelectedAtmModel, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">

            <igDP:XamDataGrid.FieldLayoutSettings>

                <igDP:FieldLayoutSettings AutoGenerateFields="False"

                                          AllowAddNew="True"

                                          AddNewRecordLocation="OnBottom" />

            </igDP:XamDataGrid.FieldLayoutSettings>

            <igDP:XamDataGrid.FieldSettings>

                <igDP:FieldSettings CellClickAction="SelectRecord"></igDP:FieldSettings>

            </igDP:XamDataGrid.FieldSettings>

            <igDP:XamDataGrid.FieldLayouts>

            <igDP:FieldLayout>

                <igDP:FieldLayout.Fields>

                    <igDP:UnboundField BindingPath="Manufacturer" BindingMode="TwoWay" Label="Производитель">

                        <igDP:UnboundField.Settings>

                            <igDP:FieldSettings EditorType="{x:Type igEditors:XamComboEditor}">

                            <igDP:FieldSettings.EditorStyle>

                                <Style TargetType="{x:Type igEditors:XamComboEditor}">

                                            <Setter Property="ItemsSource" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.ManufacturersList}" />                                          

                                            <Setter Property="DisplayMemberPath" Value="Name" />                                            

                                            <Setter Property="ValuePath" Value="Id"/>

                                </Style>

                            </igDP:FieldSettings.EditorStyle>

                            </igDP:FieldSettings>

                        </igDP:UnboundField.Settings>

                    </igDP:UnboundField>

</igDP:FieldLayout.Fields>

            </igDP:FieldLayout>

            </igDP:XamDataGrid.FieldLayouts>

        </igDP:XamDataGrid>

as the DataSource I Use my ServerModeDataSource 

<eid:ServerModeDataSource Name="AtmModelsDataSource" 

                                  EntityType="{Binding Path=EntityType, Mode=OneWay}"

                                  DataGrid="{Binding ElementName=xamDataGridAtmModels, Path=.}"

                                  SelectMethod="{Binding Path=SelectMethod, Mode=OneWay}"                                  

                                  UpdateMethod="{Binding Path=UpdateMethod, Mode=OneWay}"

                                  DeleteMethod="{Binding Path=DeleteMethod, Mode=OneWay}"/>

In ViewModel:

public BindingList<IdNamePair<Guid>> ManufacturersList

        public AtmModel SelectedAtmModel

        {

            get { return _selectedAtmModel; }

            set 

            { 

                _selectedAtmModel = value;

                RaisePropertyChangedEvent(() => SelectedAtmModel);

            }

        }

public class IdNamePair<T> : ValidatableUiFriendlyObject, IDataTransferObject

    {

        private T _id;

        /// <summary>

        /// Entity Id.

        /// </summary>

        [DataMember]

        public T Id

        {

            get { return _id; }

            set

            {

                _id = value;

                RaisePropertyChangedEvent(() => Id);

            }

        }

        internal Guid? VirtualId;

        private string _name;

        /// <summary>

        /// Entity name.

        /// </summary>

        [DataMember]

        public virtual string Name

        {

            get { return _name; }

            set

            {

                _name = value;

                RaisePropertyChangedEvent(() => Name);

            }

        }

    }

Please Help with this problem....

Please help, spent a second day on this issue, read the entire forum and the internet, and nothing found it.

HI,

 I am attaching a new sample that binds the XamComboEdtior's ItemSource to the DataContent.

 Plesase review my sample.

 Sincerely,

 Matt
 Developer Support Engineer

Hello again Matt

I actually have another question to this issue.

Although the above solution works just fine with the "Note-example", I would like to know if it is possible to databind the Combobox using SelectedItem instead of ValuePath?

In some cases this would be nice in order to update my ViewModel/database...

HI,

 I am just following up on this forum post.

 Sincerely,

 Matt
 Developer Support Engineer

HI Christian,

 As for binding using the XamComboSelectedItem, you probably could, you would need a converter.

 But using the ValuePath propety is much easier and more efficient.

Sincerely,
 Matt
 Developer Support Engineer

Nope. The binding doesn't work in my case...

Maybee this will help you:

<Style x:Key="TypeFieldStyle" TargetType="{x:Type igEditors:XamComboEditor}" BasedOn="{StaticResource ResourceKey=XamComboEditorDropDownButtonDisplayStyle}">

                    <Style.Setters>

                        <Setter Property="ItemsSource" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.AtmTypesList}" />

                        <Setter Property="SelectedItem" Value="{Binding Path=DataItem.Type, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />

                        <Setter Property="DisplayMemberPath" Value="Name" />

                        <Setter Property="ValuePath" Value="Id" />

                        <Setter Property="IsEditable" Value="True" />                        

                    </Style.Setters>

                </Style>

In XamDataGrid:

<igDP:XamDataGrid.FieldLayouts>

                <igDP:FieldLayout>

                    <igDP:UnboundField BindingPath="CaseTypeId" Label="Тип кассет">

                        <igDP:UnboundField.Settings>

                                <igDP:FieldSettings EditorStyle="{StaticResource  CaseTypeFieldStyle}" />

                        </igDP:UnboundField.Settings>

                    </igDP:UnboundField>                    

                    <igDP:Field Name="Count" Width="*" Label="Количество"/>

                </igDP:FieldLayout>

            </igDP:XamDataGrid.FieldLayouts>

in my binded DTO class

[DataContract]

    public class AtmModelConfiguration : GuidDto<AtmModelConfiguration>

    {

        public Guid? CaseTypeId

        {

            get { return CaseType == null ? (Guid?)null : CaseType.Id; }

            set

            {

                if (value.HasValue)

                    CaseType = new IdNamePair<Guid> { Id = value.Value };

            }

        }

        private IdNamePair<Guid> _caseType;

        [DataMember]

        public IdNamePair<Guid> CaseType

        {

            get { return _caseType; }

            set

            {

                _caseType = value;

                RaisePropertyChangedEvent(() => CaseType);

            }

        }

        [DataMember]

        public uint Count { get; set; }

    }

where IdNamePair<Guid> is class with fields Guid Id and Name

Name - Displays Id - value