将 Mvvmcross 绑定与 MonoTouch.Dialog(列表和命令)结合使用 [英] Use Mvvmcross Binding with MonoTouch.Dialog (Lists and Commands)

问题描述

1.绑定列表

我想知道如何将 ObservableCollection 绑定到 Radiogroup:

I wonder how I could bind a ObservableCollection to a Radiogroup:

new Section(){
                new RootElement("Mandanten", new RadioGroup("mandanten", 2)) {
                    new Section(){
                        new RadioElement("Kupus", "mandanten"),
                        new RadioElement("Kajmak", "mandanten")
                    }
                }
            }

正如您在此处看到的，我正在手动创建 2 个项目/元素，但我错过了诸如ItemsSource"之类的东西.如果不可能，你会给我什么建议?使用女巫控制(绑定列表)?

as you see here I'm creating 2 Items/Elements manually but I miss something like an "ItemsSource". If its not possible, what recommendation would you give me? To use witch Control (to bind Lists)?

2.命令绑定

正如我所见，MonoTouch.Dialog 中没有按钮".所以我看到我们将使用StringElement".我试过了，但点击按钮"后什么也没发生:

As I see theres no "button" in MonoTouch.Dialog. So I saw that we'll use "StringElement". I tried it, but after tapping on the "button" nothing happened:

new StringElement("Login").Bind(this, "SelectedCommand LoginCommand")

我不确定出了什么问题，也许我需要在这里使用新的变体"，如下所示:

I'm not sure whats wrong, maybe I need to use here the new "variant", like that:

new EntryElement ("User", "Loginuser", ViewModel.User).Bind(target, v => v.Value, t => t.User),

但我不确定如何构建类似的代码来绑定特定字符串元素"的命令(在这种情况下 - 带有 ontap 事件的按钮)..

But I'm not sure how to build that similiar code to bind a command for a particular "stringelement" (in that case - a button with the ontap event)..

感谢任何帮助！

推荐答案

1.绑定列表

绑定动态 ObservableCollection 列表的示例位于 https://github.com/slodge/MvvmCross-Tutorials/blob/master/DialogExamples/DialogExamples.Touch/Views/ThirdView.cs - 它使用一些自定义元素来自 https://github.com/slodge/MvvmCross-Tutorials/tree/master/DialogExamples/DialogExamples.Touch/BindableElements - 基于 https://github.com/asdnev/MvvmCross.AlexeysExtensions

1. Binding lists

An example of binding dynamic ObservableCollection lists is in https://github.com/slodge/MvvmCross-Tutorials/blob/master/DialogExamples/DialogExamples.Touch/Views/ThirdView.cs - it uses some custom elements from https://github.com/slodge/MvvmCross-Tutorials/tree/master/DialogExamples/DialogExamples.Touch/BindableElements - which was based on the sample from https://github.com/asednev/MvvmCross.AlexeysExtensions

由于 Radio 列表在内部实现的方式，我不知道相同的 ObservableCollection 绑定方法是否适用于 Radio List - 有人需要原型和实验来解决这个问题.但是，一个简单的固定单选列表显示在 https://github.com/slodge/MvvmCross-Tutorials/blob/master/DialogExamples/DialogExamples.Touch/Views/FirstView.cs

Because of the way Radio lists are internally implemented, I don't know if the same ObservableCollection binding approach would work for radio lists - someone would need to prototype and experiment to work this out. However, a simple fixed radio list is shown in https://github.com/slodge/MvvmCross-Tutorials/blob/master/DialogExamples/DialogExamples.Touch/Views/FirstView.cs

查看示例:https://github.com/slodge/MvvmCross-Tutorials/blob/master/DialogExamples/DialogExamples.Touch/Views/FirstView.cs

                new Section("Action")
                    {
                        new StringElement("Second").Bind(bindings, element => element.SelectedCommand, vm => vm.GoSecondCommand),
                        new StringElement("Bindable Elements").Bind(bindings, element => element.SelectedCommand, vm => vm.BindableElementsCommand)  
                    },

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