Datagager와 함께 Datagrid/Dataform 설정이 있습니다. 내 DataPager.PageSize는 선언적으로 10으로 설정됩니다. 세 개의 컨트롤 모두에 대한 My ItemsSource는 QueryableCollectionView로 설정됩니다. 내 컬렉션의 레코드 수가 10 개 미만인 경우 컬렉션에 새 항목을 추가해도 아무런 문제가 없습니다. 내 DataForm (새 항목)에서 + 기호를 클릭하고, 양식을 채우고, DP에서 edit_ended 이벤트를 캡처하고, 문제없이 내 SQL DB에 저장합니다."요소가 이미 다른 요소의 자식입니다."컬렉션에 추가 할 때 오류가 발생했습니다.
그러나 10 개 이상의 항목이 있고 + 기호 (새 항목)를 클릭하면 "요소가 이미 다른 요소의 하위 요소입니다."오류가 발생합니다. 두 컨트롤 (Gridview 또는 DataPager) 중 어떤 것이이 문제의 원인인지 잘 모르겠습니다. 또한이를 해결하는 방법을 모르겠습니다.
코드 (XAML) :
<toolkit:DataForm x:Name="dataForm"
Width="{Binding Width, ElementName=GV1}"
CurrentItem="{Binding SelectedWOEquipment}"
ItemsSource="{Binding WOEquipmentItems}"
AutoEdit="False"
Tag="Equipment"
Header="Add/Update Equipment"
AutoCommit="False"
Margin="0,0,0,10" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="EditEnded">
<cmd:EventToCommand Command="{Binding SaveEquipmentCommand}" PassEventArgsToCommand="True"/>
</i:EventTrigger>
<i:EventTrigger EventName="DeletingItem">
<cmd:EventToCommand Command="{Binding DeleteCommand}"
CommandParameter="{Binding Tag, ElementName=dataForm}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<toolkit:DataForm.ReadOnlyTemplate>
<DataTemplate>
<StackPanel>
<toolkit:DataField>
<TextBox Text="{Binding EquipmentCode}" />
</toolkit:DataField>
<toolkit:DataField Label="Equipment Description">
<TextBox Text="{Binding EquipmentDescription}" />
</toolkit:DataField>
<toolkit:DataField Label="Hours">
<TextBox IsEnabled="False" Text="{Binding Hours}" />
</toolkit:DataField>
</StackPanel>
</DataTemplate>
</toolkit:DataForm.ReadOnlyTemplate>
<toolkit:DataForm.EditTemplate>
<DataTemplate>
<StackPanel>
<toolkit:DataField Label="Equipment Codes">
<TextBox Text="{Binding EquipmentCode}" />
</toolkit:DataField>
<toolkit:DataField Label="Equipment Description">
<TextBox IsEnabled="False"
Text="{Binding EquipmentDescription}" />
</toolkit:DataField>
<toolkit:DataField Label="Hours">
<TextBox Text="{Binding Hours, Mode=TwoWay}" />
</toolkit:DataField>
</StackPanel>
</DataTemplate>
</toolkit:DataForm.EditTemplate>
<toolkit:DataForm.NewItemTemplate>
<DataTemplate>
<StackPanel>
<toolkit:DataField Label="Equipment Codes">
<telerik:RadComboBox x:Name="cboEquipment"
ItemsSource="{Binding DataSource.EquipmentList, Source={StaticResource DataContextProxy}}"
SelectedValue="{Binding EquipmentCode, Mode=TwoWay}"
Margin="0 0 20 0">
<telerik:RadComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel/>
</ItemsPanelTemplate>
</telerik:RadComboBox.ItemsPanel>
</telerik:RadComboBox>
</toolkit:DataField>
<toolkit:DataField Visibility="Collapsed">
<TextBox Text="{Binding EquipmentDescription,Mode=TwoWay}" />
</toolkit:DataField>
<toolkit:DataField Label="Hours">
<TextBox Text="{Binding Hours,Mode=TwoWay}" />
</toolkit:DataField>
</StackPanel>
</DataTemplate>
</toolkit:DataForm.NewItemTemplate>
</toolkit:DataForm>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<telerik:RadGridView ItemsSource="{Binding WOEquipmentItems}"
x:Name="GV1"
ShowGroupPanel="False"
DataLoadMode="Asynchronous"
HorizontalAlignment="Left"
HeaderRowStyle="{StaticResource CSAgvHeaderRowStyle}"
SelectedItem="{Binding SelectedWOEquipment, Mode=TwoWay}"
AutoGenerateColumns="False"
IsReadOnly="True">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn DataMemberBinding="{Binding EquipmentCode}" HeaderCellStyle="{StaticResource CSAgvHeaderCellStyle}" Header="Equipment ID" Width="100"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding EquipmentDescription}" HeaderCellStyle="{StaticResource CSAgvHeaderCellStyle}" Header="Description" Width="300"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Hours}" HeaderCellStyle="{StaticResource CSAgvHeaderCellStyle}" Header="Hours" Width="75"/>
</telerik:RadGridView.Columns>
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectedCellsChanged">
<cmd:EventToCommand Command="{Binding EditEquipmentCommand}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</telerik:RadGridView>
<sdk:DataPager Grid.Row="1" Source="{Binding WOEquipmentItems}" PageSize="10" />
코드 (뷰 모델) - WOEquipmentItems 제대로 웹 서비스를 통해 인구 :
private QueryableCollectionView _WOEquipmentItems;
private TSMVVM.Model.WOEquipment _selectedWOEquipment = new TSMVVM.Model.WOEquipment();
public QueryableCollectionView WOEquipmentItems
{
get { return _WOEquipmentItems; }
set
{
_WOEquipmentItems = value;
RaisePropertyChanged("WOEquipmentItems");
}
}
public TSMVVM.Model.WOEquipment SelectedWOEquipment
{
get
{
if (_selectedWOEquipment != null)
{
if (_selectedWOEquipment.EquipmentDescription == null && _selectedWOEquipment.EquipmentCode != null)
{
_selectedWOEquipment.EquipmentDescription = "";
_selectedWOEquipment.EquipmentDescription = EquipmentDescriptionList[EquipmentList.IndexOf(_selectedWOEquipment.EquipmentCode)];
}
}
return _selectedWOEquipment;
}
set
{
_selectedWOEquipment = value;
RaisePropertyChanged("SelectedWOEquipment");
}
}
이 게시물을보고 적어도 소스를 추적하는 데 도움이되는지 확인하십시오. http://whydoidoit.com/2010/08/30/debug-xaml-element-is-already-the-child-of-another-element/ –
감사합니다. 닛산. 나는 (아마 가지고 있어야하는) 나의 지위에 그것을 추가 할 수 있었다. 이미 XAMLValidator를 통해이 코드를 실행했지만 실패하지는 않습니다. :(그래도 고마워. –