我在列表视图中显示一个集合,每个列表视图项目都有自己的按钮用于下载相关的 pdf。
我想单击该按钮并在其位置显示一个不确定的进度条。
在我的示例项目中,我只是想在单击项目按钮时反转项目的下载状态。
我的视图模型代码:
private BindableCollection<IDownloadable> _downloadables;
public BindableCollection<IDownloadable> Downloadables
{
get { return _downloadables; }
set
{
_downloadables = value;
NotifyOfPropertyChange(() => Downloadables);
}
}
public void Download(IDownloadable item)
{
item.Downloading = !item.Downloading;
NotifyOfPropertyChange(() => Downloadables);
}
public ShellViewModel()
{
Downloadables = new BindableCollection<IDownloadable>();
Downloadables.Add(new DownloadString("String"));
Downloadables.Add(new DownloadString("String"));
Downloadables.Add(new DownloadString("String"));
}
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我的看法:
<ListView Name="Downloadables"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Grid Background="White">
<ToggleButton Content="{Binding MyString}"
Width="50"
Height="50"
HorizontalAlignment="Center"
VerticalAlignment="Center"
cal:Message.Attach="Download($dataContext)"/>
<spark:SprocketControl Width="30"
Height="30"
HorizontalAlignment="Center"
VerticalAlignment="Center"
AlphaTicksPercentage="50"
Interval="60" …Run Code Online (Sandbox Code Playgroud)