带有OR语句的DataTrigger
带有OR语句的DataTrigger
提问于 2017-03-22 19:14:31
我想合并下面的代码，可能使用一个OR语句来实现条件的多个值？它的重复性很强，它们必须是更好的写作方法。
<DataGridTemplateColumn Header="" Width="28">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<StackPanel>
<Image Name="imageEXCEL" Source="/Images/excel.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imageWORD" Source="/Images/word.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imageACCESS" Source="/Images/access.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imagePOWERPOINT" Source="/Images/powerpoint.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imagePUBLISHER" Source="/Images/publisher.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imageONENOTE" Source="/Images/onenote.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imageOUTLOOK" Source="/Images/outlook.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imageVISIO" Source="/Images/visio.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imagePROJECT" Source="/Images/project.png" Visibility="Collapsed" Width="16" Height="16" />
<Image Name="imagePDF" Source="/Images/pdf.png" Visibility="Collapsed" Width="16" Height="16" />
</StackPanel>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=Type}" Value="pdf" >
<Setter TargetName="imagePDF" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlr">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlsx">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlsm">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xltx">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xltm">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xls">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlt">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlm">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlsb">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xla">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlam">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xll">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="xlw">
<Setter TargetName="imageEXCEL" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="ppt">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pot">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pps">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pptx">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pptm">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="potx">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="potm">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="ppam">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="ppsx">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="ppsm">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="sldx">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="sldm">
<Setter TargetName="imagePOWERPOINT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="adp">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="adn">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accdb">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accdw">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accdc">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accda">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accdr">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accdt">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mdb">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mda">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mdw">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mdf">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mde">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="accde">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mam">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mad">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="maq">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mar">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mat">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="maf">
<Setter TargetName="imageACCESS" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="doc">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="dot">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="wbk">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="docx">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="docm">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="dotx">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="dotm">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="docb">
<Setter TargetName="imageWORD" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pub">
<Setter TargetName="imagePUBLISHER" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="one">
<Setter TargetName="imageONENOTE" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="oft">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="pst">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="obi">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="olm">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="ost">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="iaf">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="oab">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="prf">
<Setter TargetName="imageOUTLOOK" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vsdx">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vsd">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vss">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vst">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vsx">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vdx">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="vtx">
<Setter TargetName="imageVISIO" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mpp">
<Setter TargetName="imagePROJECT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mpt">
<Setter TargetName="imagePROJECT" Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Type}" Value="mpd">
<Setter TargetName="imagePROJECT" Property="Visibility" Value="Visible"/>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>任何帮助巩固这一点将不胜感激。
回答 2
Stack Overflow用户
回答已采纳
发布于 2017-03-22 19:36:59
将所有内容替换为以下内容：
<Window.Resources>
<!-- somewhere in resources -->
<wpfApplication1:TypeToImageConverter x:Key="typeToImage" />
</Window.Resources>
<Image Source="{Binding Type, Converter={StaticResource typeToImage}}"/>并使用转换器：
public class TypeToImageConverter : IValueConverter {
static readonly HashSet<string> _pdfExtensions = new HashSet<string>(new[] {"pdf"});
static readonly HashSet<string> _excelExtensions = new HashSet<string>(new[] { "xlr", "xlsx", "xlsm" });
// and so on
public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
var ext = value as string;
string relativePath = null;
if (ext != null) {
ext = ext.ToLowerInvariant();
if (_pdfExtensions.Contains(ext))
relativePath = "/Images/pdf.png";
else if (_excelExtensions.Contains(ext))
relativePath = "/Images/excel.png";
// and so on
}
if (relativePath != null) {
var bmp = new BitmapImage();
bmp.BeginInit();
bmp.UriSource = new Uri(relativePath, UriKind.Relative);
bmp.EndInit();
return bmp;
}
return null;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
throw new NotImplementedException();
}
}Stack Overflow用户
发布于 2017-03-22 19:25:26
我建议创建一个IValueConverter，将Type字符串转换为<Image>的Source。这样，每个模板只能有一个图像，而不是有许多折叠和不可见的图像。你会有更少的代码，更好的奖励。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/42960727
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