使用DataTemplateSelector从ResourceDictionary获取DataTemplate

2 回答

• 1

  在 ResourceDictionary 中分隔 DataTemplate 然后将其添加到 App.xaml ：

  <ResourceDictionary.MergedDictionaries>        
      <ResourceDictionary Source="Resources/MyDataTemplate.xaml" />
  </ResourceDictionary.MergedDictionaries>
  

  在 DataTemplateSelector 中，您可以通过以下方式获取模板：

  Application.Current.FindResource("myCustomDataTemplate") as DataTemplate;
  

  其中 myCustomDataTemplate 是您在 MyDataTemplate.xaml 文件中指定的datatemplate的键 .

  回复于 2024-05-04T11:51:37+08:00
• 2

  您可以在 DataTemplateSelector 类中添加 ResourceDictionary 属性：

  public class SettingsDataTemplateSelector : DataTemplateSelector
  {
      public ResourceDictionary ResourceDictionary { get; set; }
  
      public override DataTemplate SelectTemplate(object item, DependencyObject container)
      {
          FrameworkElement element = container as FrameworkElement;
          if (element != null && item != null && item is Setting)
          {
              Setting registeritem = item as Setting;
  
              if (registeritem.EditValueVar.EditType == EditType.Textfield)
                  return ResourceDictionary["TextboxDataTemplate"] as DataTemplate;
              else if (registeritem.EditValueVar.EditType == EditType.DropDown)
                  return ResourceDictionary["ComboDataTemplate"] as DataTemplate;
              else if (registeritem.EditValueVar.EditType == EditType.Slider)
                  return ResourceDictionary["SliderDataTemplate"] as DataTemplate;
              else
                  throw new ArgumentOutOfRangeException(registeritem.EditValueVar.EditType.ToString());
          }
  
          return null;
      }
  }
  

  ...你在XAML中设置的：

  <local:SettingsDataTemplateSelector x:Key="selector">
      <local:SettingsDataTemplateSelector.ResourceDictionary>
          <ResourceDictionary Source="Dictionary1.xaml" />
      </local:SettingsDataTemplateSelector.ResourceDictionary>
  </local:SettingsDataTemplateSelector>
  

  回复于 2024-05-04T11:51:37+08:00