如何用 SortedList 填充组合框

Question

我自己创建了一个 SortedList，我无法将其绑定到组合框，我不是通过 XAML 执行此操作，而是通过代码执行此操作：

 SortedList<int, string> AreaList = new SortedList<int, string>();
            AreaList.Add(1, "Agriculture");
            AreaList.Add(2, "Forestry");
            AreaList.Add(3, "Fruits");
            AreaList.Add(4, "Food");
            AreaList.Add(5, "Metals");
            AreaList.Add(6, "Mining");
            AreaList.Add(7, "Electricity");
            AreaList.Add(8, "Building Contracts");
            AreaList.Add(9, "Transport");
            AreaList.Add(10, "Alcohol");
            AreaList.Add(11, "Information Technologies");
            AreaList.Add(12, "Health And Social Services");
            AreaList.Add(13, "Art and Entertainement");
            AreaList.Add(14, "Hospitality Business");
            AreaList.Add(15, "Education");
            AreaList.Add(16, "Real Estate");
            AreaList.Add(17, "Sales");
            AreaList.Add(18, "Architecture");
            AreaList.Add(19, "Engineering");
            AreaList.Add(20, "Wholesale");

        comboBox1.ItemsSource = AreaList.ToList();
        comboBox1.SelectedValue = "TKey";
        comboBox1.DisplayMemberPath = "TValue";

我不知道我做错了什么，这是我第一次使用 SortedLists，我是 WPF 的初学者。

Answer 1

不知道为什么你需要SortedList，但最后（由于ToList()调用）你实际上绑定到List<KeyValuePair<int, string>>，所以你需要设置SelectedValuePath和DisplayMemberPath如下：

comboBox1.SelectedValuePath = "Key"; // bind to KeyValuePair<int, string>.Key property
comboBox1.DisplayMemberPath = "Value";  // bind to KeyValuePair<int, string>.Value property