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我有一个窗口,我想绑定来自2个不同DataModels的数据上下文。我遇到过这个帖子: WPF binding multiple controls to different datacontexts它不能在我的代码中工作。我不知道你是否必须设置一个新的类的实例来使它工作,但我不能让它显示我的数据。这里有一个样本wpf MVVM中的多个DataContext?
<Grid>
<Button Command="{Binding FurnaceDataViewModel.StartButtonCommand}"/>
<Button Command="{Binding FurnaceDataViewModel.StopButtonCommand}"/>
<Button Command="{Binding FurnaceDataViewModel.ClearButtonCommand}"/>
<Label Content="{Binding FurnaceDataModel.TotalTimeIdle}" />
<Label Content="{Binding FurnaceDataModel.GallonsUsed}" />
<Label Content="{Binding FurnaceDataModel.TotalMoney}" />
<Label Content="{Binding FurnaceDataModel.TotalTimeRun}" />
</Grid>
我有我的MainWindow类:
FurnaceDataContext dataContext = new FurnaceDataContext();
InitializeComponent();
DataContext = dataContext;
这里是我的DataContext类
class FurnaceDataContext
{
public FurnaceDataViewModel FurnaceDataViewModel { get; set; }
public FurnaceDataModel FurnaceDataModel { get; set; }
public SqlDataModel SqlDataModel { get; set; }
}
我不能让它正确地显示我的文本或我的按钮命令。有任何想法吗?
可能是因为你的'dataContext'对象的属性等于空。你应该分配内部属性,比如'dataContext.FurnaceDataViewModel = something;' – vorrtex
你在哪里创建FurnaceDataViewModel和FurnaceDataModel的新实例?你需要创建它吗?FurnaceDataContext dataContext = new FurnaceDataContext(); datacontext.FurnaceDataViewModel = new ...(); ..等等 – codeSetter