Question

我需要更改以下方法：

public static IList<SomeItem> GetProjects() {
 List<SomeItem> projects = new List<SomeItem>();    
 string result = Task.Run(() => TestMethodAsync("getProjects",GetApiKeyAsync())).GetAwaiter().GetResult();
 MyObject resultparsed = new JavaScriptSerializer().Deserialize<MyObject>(result);

  foreach (SomeItem item in resultparsed.result.items)
  {
   projects.Add(item);
  }
  return projects;
}

该项目将自动添加到ComboBox：

这来自 XAML ：

<ComboBox ItemsSource="{Binding Path=ProjectList}" IsSynchronizedWithCurrentItem="True" />

在这里，我正在尝试修改上述代码 C＃：

public List<string> ProjectList { get; internal set; }
public static IList<SomeItem> GetProjects()
{
 ProjectList = new List<string>;//???

 string result = Task.Run(() => TestMethodAsync("getProjects",GetApiKeyAsync())).GetAwaiter().GetResult();
 MyObject resultparsed = new JavaScriptSerializer().Deserialize<MyObject>(result);

  foreach (SomeItem item in resultparsed.result.items)
  {
    ProjectList.Add(item);//??
  }
}

Answer 1

将List<string>替换为ObservableCollection<string>：

public ObservableCollection<string> ProjectList { get; internal set; }

与List<T>不同，ObservableCollection<T>在添加或删除项时向UI提供通知。

然后您可以填充源集合，如下所示：

public ObservableCollection<string> ProjectList { get; internal set; } = new ObservableCollection<string>();
public async Task PopiuateProjectListAsync()
{
    ProjectList.Clear();
    MyObject resultparsed = await Task.Run(() =>
    {
        string result = TestMethodAsync("getProjects", GetApiKeyAsync());
        return new JavaScriptSerializer().Deserialize<MyObject>(result);
    });

    foreach (SomeItem item in resultparsed.result.items)
    {
        ProjectList.Add(item.SomeStringProperty);
    }
}

从JavaScriptSerializer将项目绑定到ComboBox

1 个答案: