英文:
I am trying to implement a ICommand on a tableselection in C#/MAUI, but it seems that I never enter the command when debugging
问题
抱歉，我只会翻译代码部分：
public ICommand AddNewShotComand { set; get; }public MainPage(){InitializeComponent();MyInit();AddNewShotComand = new Command(AddNewShotCmd);}public void AddNewShotCmd(){var a = 5;}
请注意，你提供的代码中存在一些拼写错误，"AddNewShotComand" 应该是 "AddNewShotCommand"，以及 "MyInit()" 方法没有在提供的代码中定义。这些错误可能会影响代码的执行。
英文:
I am sorry or asking this question, I know there are similar questions in this community that I tried that did not ix my problem. Essentially I have a view, called MainPage.xaml, which contains this code:
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"xmlns:local="clr-namespace:VideoDemos.Views"x:Class="VideoDemos.Views.MainPage"Title="Home Page">...<TableView Intent="Settings"><TableRoot><TableSection><ImageCell Text="Add new shot"Detail="Add a new shot, the starting shot is a serve"ImageSource="Resources/Images/add_icon_3.png"Command="{Binding AddNewShotComand}"/></TableSection></TableView>...</ContentPage>public ICommand AddNewShotComand { set; get; }public MainPage(){InitializeComponent();MyInit();AddNewShotComand = new Command(AddNewShotCmd);}public void AddNewShotCmd(){var a = 5;}
I have var a = 5 just as a debug point, however, I never hit this point.
I've tried to iterate the steps o this link rom microsot I am very conused, I've gone step by step ollowing this link rom microsot https://learn.microsoft.com/en-us/dotnet/maui/fundamentals/data-binding/commanding?view=net-maui-7.0
I've tried to change the tableview intent to the our parameters, as a previous stackoverlow seemed to suggest that overlap may have ben the problem, but this did not ix anything or me.
I've tried to copy/paste directly rom the link to no avail.
I don't really know what the problem might be.
Any help would be great!
答案1
得分: 0
绑定不起作用，如果您没有定义BindingContext。在您的情况下，因为您要绑定的是代码后台的属性，而不是单独的 VM，您可以这样做：
public MainPage(){InitializeComponent();MyInit();AddNewShotComand = new Command(AddNewShotCmd);BindingContext = this;}
英文:
bindings don't work if you don't define a BindingContext. In your case, since you are binding to properties in your code behind and not a separate VM, you would do this
public MainPage(){InitializeComponent();MyInit();AddNewShotComand = new Command(AddNewShotCmd);BindingContext = this;}
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