我是使用C#的新手,我正在尝试构建一个简单的Windows应用商店应用。但是我无法弄清楚为什么ArrayList
无法找到。在以下代码中,我尝试在ArrayList
函数中使用Button_Click_1()
。我收到的错误是“The type or namespace name 'ArrayList' could not be found
”,但我使用的是System.Collections
,其中包含ArrayList
。
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The Basic Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234237
namespace Statistics
{
/// <summary>
/// A basic page that provides characteristics common to most applications.
/// </summary>
public sealed partial class MainPage : Statistics.Common.LayoutAwarePage
{
public MainPage()
{
this.InitializeComponent();
}
/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="navigationParameter">The parameter value passed to
/// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
/// </param>
/// <param name="pageState">A dictionary of state preserved by this page during an earlier
/// session. This will be null the first time a page is visited.</param>
protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
{
}
/// <summary>
/// Preserves state associated with this page in case the application is suspended or the
/// page is discarded from the navigation cache. Values must conform to the serialization
/// requirements of <see cref="SuspensionManager.SessionState"/>.
/// </summary>
/// <param name="pageState">An empty dictionary to be populated with serializable state.</param>
protected override void SaveState(Dictionary<String, Object> pageState)
{
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
ArrayList data = new ArrayList();
}
private void TextBox_TextChanged_1(object sender, TextChangedEventArgs e)
{
}
}
}
答案 0 :(得分:4)
您的目标是Windows商店:这意味着您正在使用netcore框架。此不是常规.NET框架
ArrayList
未包含在内。请改用T列表。 List<object >
就足够了,但更具体的类型更适合。
答案 1 :(得分:1)
winRT(Windows应用商店)应用程序中不提供非泛型集合。
使用通用列表类型:
List<T>