c# - Listpicker 无法进入全屏模式 Windows Phone

Question

我试图让列表选择器下拉菜单进入全屏模式。当我进入全屏扩展模式时，它会在第一次机会时崩溃。下面是我的代码:

C#:

monthCat.SetValue(Microsoft.Phone.Controls.ListPicker.ItemCountThresholdProperty,12);

XAML:

<toolkit:ListPicker Name="monthCat" ExpansionMode="FullScreenOnly">
    <toolkit:ListPickerItem Content="January" />
    <toolkit:ListPickerItem Content="February" />
    <toolkit:ListPickerItem Content="March" />
    <toolkit:ListPickerItem Content="April" />
    <toolkit:ListPickerItem Content="May" />
    <toolkit:ListPickerItem Content="June" />
    <toolkit:ListPickerItem Content="July" />
    <toolkit:ListPickerItem Content="August" />
    <toolkit:ListPickerItem Content="September" />
    <toolkit:ListPickerItem Content="October" />
    <toolkit:ListPickerItem Content="November" />
    <toolkit:ListPickerItem Content="December" />
</toolkit:ListPicker>

当我删除 ExpensionMode 时，它​​工作正常但不是全屏模式。

Answer 1

试试这个:

 public MainPage()
        {
            InitializeComponent();

            SetBinding();

        }

        void SetBinding()
        {
            List<string> list = new List<string>();
            list.Add("January");
            list.Add("February");
            list.Add("March");
            list.Add("April");
            list.Add("May");
            list.Add("June");
            list.Add("July");
            list.Add("August");
            list.Add("September");
            list.Add("October");
            list.Add("November");
            list.Add("December");
            monthCat.ItemsSource = list;
        }

并将此代码粘贴到您的 .xaml 文件中。

 <toolkit:ListPicker Name="monthCat" ExpansionMode="FullScreenOnly" >
                <toolkit:ListPicker.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding}"/>
                    </DataTemplate>
                </toolkit:ListPicker.ItemTemplate>
                <toolkit:ListPicker.FullModeItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding}" FontSize="25"/>
                    </DataTemplate>
                </toolkit:ListPicker.FullModeItemTemplate>
            </toolkit:ListPicker>