C# 使用命名约定的Caliburn微设计时间

使用Caliburn Micro 1.5.1，我试图让设计时绑定在WP8应用程序中工作。我创建了一个设计时视图模型，我在PhoneApplicationPage中明确指定了该模型：

<phone:PhoneApplicationPage
    d:DataContext="{Binding Source={d:DesignInstance Type=designTime:StartPageDesignTimeViewModel, IsDesignTimeCreatable=True}}"
    micro:Bind.AtDesignTime="True"

---

好的，我想出来了。我想要的是能够随时覆盖现有绑定。CM更具防御性，因此默认情况下，它不会替换ItemsControl的现有绑定或值。ConventionManager.cs中定义了此行为：

AddElementConvention<ItemsControl>(ItemsControl.ItemsSourceProperty, "DataContext", "Loaded")
.ApplyBinding = (viewModelType, path, property, element, convention) => {
    if (!SetBindingWithoutBindingOrValueOverwrite(viewModelType, path, property, element, convention, ItemsControl.ItemsSourceProperty)) {
        return false;
    }

    ApplyItemTemplate((ItemsControl)element, property);

    return true;
};

（我还必须对我先前为RadDataBoundListBox添加的约定进行编辑）

在某些情况下，我可以看到有人可能希望声明性地强制替换现有绑定。也许我会写一个补丁

<Grid x:Name="ContentPanel">
    <telerikPrimitives:RadDataBoundListBox x:Name="Rooms" ItemsSource="{Binding Rooms}" ...>

AddElementConvention<ItemsControl>(ItemsControl.ItemsSourceProperty, "DataContext", "Loaded")
.ApplyBinding = (viewModelType, path, property, element, convention) => {
    if (!SetBindingWithoutBindingOrValueOverwrite(viewModelType, path, property, element, convention, ItemsControl.ItemsSourceProperty)) {
        return false;
    }

    ApplyItemTemplate((ItemsControl)element, property);

    return true;
};

ConventionManager.AddElementConvention<ItemsControl>(ItemsControl.ItemsSourceProperty, "DataContext", "Loaded")
             .ApplyBinding = (viewModelType, path, property, element, convention) => {
                                 ConventionManager.SetBinding(viewModelType, path, property, element, convention, ItemsControl.ItemsSourceProperty);

                                 ConventionManager.ApplyItemTemplate((ItemsControl) element, property);
                                 return true;
                             };