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我有一個窗口,我想綁定來自2個不同DataModels的數據上下文。我遇到過這個帖子: WPF binding multiple controls to different datacontexts它不能在我的代碼中工作。我不知道你是否必須設置一個新的類的實例來使它工作,但我不能讓它顯示我的數據。這裏有一個樣本wpf MVVM中的多個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類:
FurnaceDataContext dataContext = new FurnaceDataContext();
InitializeComponent();
DataContext = dataContext;
這裏是我的DataContext類
class FurnaceDataContext
{
public FurnaceDataViewModel FurnaceDataViewModel { get; set; }
public FurnaceDataModel FurnaceDataModel { get; set; }
public SqlDataModel SqlDataModel { get; set; }
}
我不能讓它正確地顯示我的文本或我的按鈕命令。有任何想法嗎?
可能是因爲你的'dataContext'對象的屬性等於空。你應該分配內部屬性,比如'dataContext.FurnaceDataViewModel = something;' – vorrtex
你在哪裏創建FurnaceDataViewModel和FurnaceDataModel的新實例?你需要創建它嗎?FurnaceDataContext dataContext = new FurnaceDataContext(); datacontext.FurnaceDataViewModel = new ...(); ..等等 – codeSetter