DataGridColum的bug

Datagrid有多个bug；

1，不支持DynamicResource的东西

2，在Column隐藏后再显示， ColumnHeader的Tag或者DataContext为null。

解决办法：

用StaticResource ，如下面的 StaticResource DGC_ContentTemplate；

用DataGridColumnHeader的Column，来取得上层的datacontext。如， ItemsSource="{Binding Path=Column.Tag, Converter ={StaticResource DebugConverter}, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x: Type DataGridColumnHeader}}}"

private void InitDataGridBinding (DataGridColumnEx col, string path)

{

if (null == col || String.IsNullOrWhiteSpace (path) || null == col .Header)

{

return;

}

Binding binding = new Binding();

binding.Mode = BindingMode. OneWay;

binding.RelativeSource = new RelativeSource(RelativeSourceMode .Self);

binding.Converter = new BoolToVisibilityConverter();

binding.Path = new PropertyPath("(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 );

DependencyPropertyDescriptor dpd = DependencyPropertyDescriptor .FromProperty( DataGridColumnEx.VisibilityProperty , typeof(DataGridColumnEx ));

if (dpd != null)

{

dpd.AddValueChanged (col, delegate

{

InitDataGridColumnHeader(col , GetDataGridParent( col));

});

}

//}

}

</DataTemplate>

<Setter.Value>

<Grid>

<!--<ComboBox Margin="0,10,0,0"

ItemsSource="{Binding Path=Tag, Converter={StaticResource DebugConverter}, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridColumnHeader}}}"></ComboBox>-->

<ComboBox Margin ="0,10,0,0"

ItemsSource="{Binding Path=Column.Tag, Converter ={StaticResource DebugConverter}, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x: Type DataGridColumnHeader}}}"></ ComboBox>

</StackPanel>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

巴特西

DataGridColum的bug

最新文章

热门文章