如何在Xamarin表单中使用AutoCompleteTextView

<StackLayout>
    <Label Text="请选择一个选项:" />
    <Entry x:Name="AutoCompleteEntry" />
</StackLayout>

using System.Collections.Generic;
using Xamarin.Forms;

public partial class MainPage : ContentPage
{
    List<string> options = new List<string> { "Option 1", "Option 2", "Option 3" };

    public MainPage()
    {
        InitializeComponent();

        AutoCompleteEntry.TextChanged += AutoCompleteEntry_TextChanged;
    }

    private void AutoCompleteEntry_TextChanged(object sender, TextChangedEventArgs e)
    {
        var keyword = e.NewTextValue;

        // 根据关键字过滤数据源
        var filteredOptions = options.Where(option => option.ToLower().Contains(keyword.ToLower())).ToList();

        // 更新AutoCompleteTextView的建议列表
        AutoCompleteEntry.ItemsSource = filteredOptions;
    }
}