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从JavaScriptSerializer将项绑定到ComboBox

combobox data-binding list wpf c#

4est · 技术社区 · 6 年前

我需要改变以下方法:

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;
}

这些项目将自动添加到 ComboBox :

这是来自 XAML :

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

这里我想修改上面的代码 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);//??
  }
}

1 回复 | 直到 6 年前

mm8 6 年前

替换 List<string> 用一个 ObservableCollection<string> :

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

不像一个 List<T> ,一个 ObservableCollection<T> 在添加或删除项时向UI提供通知。

然后可以像这样填充源集合:

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);
    }
}

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