时间：2019-05-10 标签：c#windows 8 selected comboboxitem

Question

我正在开发一个 Windows 8 应用商店应用程序 (c#)。 我有一个从存储库中获取项目的组合框 (cboTeam1)。

private static List<TeamItem> JPLItems = new List<TeamItem>();

public static List<TeamItem> getJPLItems()
    {
        if (JPLItems.Count == 0)
        {
            JPLItems.Add(new TeamItem() { Id = 1, Description = "Anderlecht", Image = "Jpl/Anderlecht.png", ItemType = ItemType.JPL });
            JPLItems.Add(new TeamItem() { Id = 1, Description = "Beerschot", Image = "Jpl/Beerschot.png", ItemType = ItemType.JPL });
            JPLItems.Add(new TeamItem() { Id = 1, Description = "Cercle Brugge", Image = "Jpl/Cercle.png", ItemType = ItemType.JPL });
            JPLItems.Add(new TeamItem() { Id = 1, Description = "Charleroi", Image = "Jpl/Charleroi.png", ItemType = ItemType.JPL });
        }
        return JPLItems;
    }

我在 cboTeam1 的 ItemsSource 中加载项目：

cboTeam1.ItemsSource = ItemRepository.getJPLItems();

当 cboTeam1 选择改变时，我会这样做：

    private void cboTeam1_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        Ploeg1.Text = cboTeam1.SelectedValue.ToString();               
    }

这会导致：SportsBetting.Model.TeamItem

谁能帮我在我的文本块（Ploeg1.Text）中获取组合框选择值？？

Answer 1

您几乎已经自己回答了这个问题。

private void cboTeam1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
        // cast the selected item to the correct type.
    var selected = cboTeam.SelectedValue as TeamItem;
        //then access the appropriate property on the object, in this case "Description"
        // note that checking for null would be a good idea, too.
    Ploeg1.Text = selected.Description;               
}

另一个选项是覆盖 TeamItem 类中的 ToString() 以返回描述。在这种情况下，您的原始代码应该可以正常工作。

public override string ToString()
{
    return this._description;  // assumes you have a backing store of this name
}