將ComboBox的SelectedItem設置為ListBox UWP中的對象

Question

我有一個填充我的會計科目表的列表視圖：

public class ChartOfAccounts
{
    public int AccountCode { get; set; }
    public string AccountTitle { get; set; }
    public string Description { get; set; }
    public string SubCategory { get; set; }
    public string Category { get; set; }
    public bool Active { get; set; }
}

通過此列表視圖，我想填充其他控件，例如：

private void MainRadDataGrid_SelectionChanged(object sender, Telerik.UI.Xaml.Controls.Grid.DataGridSelectionChangedEventArgs e)
{
    RadDataGrid rdg = (RadDataGrid)sender;

    var SelectedCOA = (ChartOfAccounts)rdg.SelectedItem;

    if (rdg !=null && rdg.SelectedItems.Count > 0) {
        AccountCodeTextBox.Text = SelectedCOA.AccountCode.ToString();
        AccountTitleTextBox.Text = SelectedCOA.AccountTitle;
        DescriptionTextBox.Text = SelectedCOA.Description;
        CategoryComboBox.SelectedItem = SelectedCOA.Category;

        SubCategoryComboBox.SelectedItem = SelectedCOA.SubCategory;
    }
}

問題是，我無法將Category和SubCategory框設置為相關的Category和SubCategory 。 組合框僅顯示Category和Sub Category詞，而不顯示實際選擇的項目。

誰能解釋為什么這行不通？

Answer 1

我認為您的答案是這樣的：

CategoryComboBox.SelectedItem = Combox1.FindStringExact(SelectedCOA.Category.?) // ? = displayed cat name

要么

CategoryComboBox.SelectedIndex = CategoryComboBox.Items.IndexOf(SelectedCOA.Category.?);