Datagrid有多個bug;
1,不支持DynamicResource的東西
2, 在Column隱藏后再顯示, ColumnHeader的Tag或者DataContext為null。
解決辦法:
用StaticResource ,如下面的?StaticResource?DGC_ContentTemplate;
用DataGridColumnHeader的Column,來取得上層的datacontext。如,?ItemsSource="{Binding?Path=Column.Tag,?Converter?={StaticResource?DebugConverter},?Mode=OneWay,?RelativeSource={RelativeSource???FindAncestor,?AncestorType={x:?Type?DataGridColumnHeader}}}"
?privatevoidInitDataGridBinding(DataGridColumnExcol,stringpath)
?????? {
??????????if(null==col||String.IsNullOrWhiteSpace(path) ||null==col.Header)
?????????? {
??????????????return;
?????????? }
??????????Bindingbinding=newBinding();
??????????binding.Mode=BindingMode.OneWay;
??????????binding.RelativeSource=newRelativeSource(RelativeSourceMode.Self);
??????????binding.Converter=newBoolToVisibilityConverter();
??????????binding.Path=newPropertyPath("(FrameworkElement.DataContext).PACfgVM."+path+".CfgInfo["+PAAttachedProperty.GetName(col) +"].IsVisiable");
??????????BindingOperations.SetBinding(col,DataGridColumnEx.VisibilityProperty,binding);
??????????//{for combobox binding in columnHeader
??????????col.Tag=PAAttachedProperty.GetTag(col);
??????????DependencyPropertyDescriptordpd=DependencyPropertyDescriptor.FromProperty(DataGridColumnEx.VisibilityProperty,typeof(DataGridColumnEx));
??????????if(dpd!=null)
?????????? {
??????????????dpd.AddValueChanged(col,delegate
?????????????? {
??????????????????//
??????????????????InitDataGridColumnHeader(col,GetDataGridParent(col));
?????????????? });
?????????? }
??????????//}
?????? }
? ? ? ? ??<DataTemplatex:Key="DGC_ContentTemplate">
??????????????<TextBlockTextWrapping="Wrap"Text="{Binding}"MinWidth="20"/>
??????????</DataTemplate>
?<Stylex:Key="DataGridColumnHeaderStyle_ComboBox"TargetType="{x:TypeDataGridColumnHeader}">
??????????????<SetterProperty="ContentTemplate"Value="{StaticResourceDGC_ContentTemplate}"/>
??????????????<SetterProperty="VerticalContentAlignment"Value="Center"/>
?????? ????????????????????????<SetterProperty="Template">
?????? ????????????????????????????????????????<Setter.Value>
?????? ????????????????????????????????????????????????????????<ControlTemplateTargetType="{x:TypeDataGridColumnHeader}">
??????????????????????????<Grid>
?????? ????????????????????????????????????????????????????????????????????????????????????????<StackPanelOrientation="Vertical"d:LayoutOverrides="Height"Margin="10">
??????????????????????????????????<LabelForeground="Black"HorizontalContentAlignment="Left"Content="{TemplateBindingContent}"/>
??????????????????????????????????<!--<ComboBox Margin="0,10,0,0" ItemsSource="{Binding (FrameworkElement.Column.).TimeSearchGroup, Converter={StaticResource DebugConverter}, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}"/>-->
??????????????????????????????????<!--<ComboBox Margin="0,10,0,0"
???????????????????????????????????????????? ItemsSource="{Binding Path=Tag, Converter={StaticResource DebugConverter}, Mode=OneWay, RelativeSource={RelativeSource? FindAncestor, AncestorType={x:Type DataGridColumnHeader}}}"></ComboBox>-->
??????????????????????????????????<ComboBoxMargin="0,10,0,0"
????????????????????????????????????????????ItemsSource="{BindingPath=Column.Tag,Converter={StaticResourceDebugConverter},Mode=OneWay,RelativeSource={RelativeSource?FindAncestor,AncestorType={x:TypeDataGridColumnHeader}}}"></ComboBox>
??????????????????????????????</StackPanel>??????? ???????????????????????????????????????????????????????????????????????????????????????????????
?????? ????????????????????????????????????????????????????????????????????????????????????????<Thumbx:Name="PART_LeftHeaderGripper"HorizontalAlignment="Left"Style="{StaticResourceColumnHeaderGripperStyle}"/>
?????? ????????????????????????????????????????????????????????????????????????????????????????<Thumbx:Name="PART_RightHeaderGripper"HorizontalAlignment="Right"Style="{StaticResourceColumnHeaderGripperStyle}"/>
?????? ????????????????????????????????????????????????????????????????????????</Grid>
?????? ????????????????????????????????????????????????????????</ControlTemplate>
?????? ????????????????????????????????????????</Setter.Value>
?????? ????????????????????????</Setter>
??????????????<EventSetterEvent="Selector.SelectionChanged"Handler="ComboBox_SelectionChanged"/>
??????????</Style>
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