Silverlight DataGridTemplateColumn与DataGridTextColumn

Question

为什么这个工作...

<data:DataGridTemplateColumn Header="YTD v. Exchange" x:Name="YTDvExchange" Visibility="Collapsed" CanUserSort="True" SortMemberPath="ytdExchangeReturn.value">
                    <data:DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <TextBlock  TextAlignment="Right" VerticalAlignment="Center"
                                    Text="{Binding ytdExchangeReturn.value, Converter={StaticResource fcFixedDecimalConverter}}"
                                    Foreground="{Binding ytdExchangeReturn.value, Converter={StaticResource fcForegroundValueConverter}}"/>
                        </DataTemplate>
                    </data:DataGridTemplateColumn.CellTemplate>
                </data:DataGridTemplateColumn>

但这不是...

<data:DataGridTextColumn Header="YTD v. Exchange"
                    Binding="{Binding ytdExchangeReturn.value, Converter={StaticResource fcFixedDecimalConverter}}"
                    Foreground="{Binding ytdExchangeReturn.value, Converter={StaticResource fcForegroundValueConverter}}"/>

我得到第二个的'system.windows.markup.xamlparseexception：ag_e_parser_bad_property_value'。该问题适用于前景转换器，结合很好。

Answer 1

我认为问题是DataGridTextColumn的前景属性不是依赖性属性，因此不能用于数据指标。

http://msdn.microsoft.com/en-us/library/system.windows.controls.datagridtextcolumn.foreground（v = vs.95).aspx

用于CellTemplate的文本块的前景属性是依赖项属性，因此是数据指标的有效目标。

http://msdn.microsoft.com/en-us/library/system.windows.controls.textblock.foregrock.foreground（v = vs.95).aspx

参考：

http://msdn.microsoft.com/en-us/library/cc221408(vs.95).aspx#setting_properties_data_binding

http://forums.silverlight.net/forums/p/151524/338879.aspx#338879