我正在尝试用图像填充一个组合。定义如下:

<ComboBox SelectedItem="{Binding SelectedLangComboItem}"
          ItemsSource="{Binding Languages}">
    <ComboBox.ItemTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal">
                <Image Source="{Binding Image}" />
                <TextBlock Text="{Binding Label}" />
            </StackPanel>
        </DataTemplate>
    </ComboBox.ItemTemplate>
</ComboBox>

其中项是Languageitem类:
public class LanguageItem
{
  public System.Drawing.Bitmap Image { get; set; }
  public string Label { get; set; }
  public string Culture { get; set; }

  public LanguageItem(System.Drawing.Bitmap image, string label, string culture)
  {
    Image = image;
    Label = label;
    Culture = culture;
  }
}

现在,在我的视图模型中,我做了:
  _Languages = new ObservableCollection<LanguageItem>();

  System.Reflection.Assembly app = System.Reflection.Assembly.GetExecutingAssembly();
  System.IO.Stream file;
  file = app.GetManifestResourceStream("MyNamespace.Images.FLAG1.gif");
  _Languages.Add(new LanguageItem(new Bitmap(file), "ITALIAN", "it-IT"));
  file = app.GetManifestResourceStream("MyNamespace.Images.FLAG2.gif");
  _Languages.Add(new LanguageItem(new Bitmap(file), "ENGLISH", "en-EN"));

  this.SelectedLangItem = _Languages[0];

图像是嵌入式资源。这里我有两个问题:
图像不显示;
未选择项,所选语言项为:
公共语言项selectedlangitem
{
获取{return\u selectedlangitem;}
设置
{
如果(_selectedlangitem==值)
回报;
    _SelectedLangItem = value;
    this.RaisePropertyChanged("SelectedLangItem");
  }
}

最佳答案

使用

new BitmapImage(new Uri("MyNamespace.Images.FLAG1.gif", UriKind.Relative));

因为它必须实现imagesource
关于未选择:属性名是“selectedlangitem”,而在xaml中,selectedlangcomboitem是“selectedlangitem”。
代码:
this.RaisePropertyChanged("SelectedLangItem");

xaml:
<ComboBox SelectedItem="{Binding SelectedLangComboItem}"

08-06 19:17