Native ComboBox无法正确显示选项

时间：2012-04-11 20:45:56

标签： c# .net wpf windows-phone-7 combobox

编辑：似乎 ListPicker 是要走的路，但我对此有详细的问题 Microsoft.Phone.Controls.Toolkit ListPicker throws XamlParseException

我在代码中有以下ComboBox：

<ComboBox x:Name="Result" Grid.Column="6" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="Black" Background="White">   
    <ComboBoxItem Content="Win" />  
    <ComboBoxItem Content="Place" />  
    <ComboBoxItem Content="Lose" />  
</ComboBox>

但它并没有像我预期的那样显示出来。当您下拉ComboBox时，选项不会出现，它就像空项目一样。见下文：

enter image description here

但是，当选择某个项目时，它会正确显示并返回正确的索引/项目。见下文：

enter image description here

我确信有一些我错过的简单但不能把手指放在上面。

编辑：好的，我发布了完整的代码。我有一个用户控件OddsRow，如下所示：

<UserControl xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"  x:Class="MojoPinBetOddsCalculator.OddsRow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    d:DesignHeight="480" d:DesignWidth="480">

    <Grid x:Name="LayoutRoot" Background="{StaticResource PhoneChromeBrush}">
        <Grid.RowDefinitions>
            <RowDefinition Height="70"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="50*"></ColumnDefinition>
            <ColumnDefinition Width="70*"></ColumnDefinition>
            <ColumnDefinition Width="30*"></ColumnDefinition>
            <ColumnDefinition Width="70*"></ColumnDefinition>
            <ColumnDefinition Width="70*"></ColumnDefinition>
            <ColumnDefinition Width="70*" ></ColumnDefinition>
            <ColumnDefinition Width="100*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <TextBlock x:Name="RowNumber" Grid.Column="0" VerticalAlignment="Center" HorizontalAlignment="Center"></TextBlock>
        <TextBox x:Name="OddsNumerator" Grid.Column="1" Width="90" Height="70" HorizontalAlignment="Center" TextAlignment="Center" VerticalAlignment="Center" MaxLength="3" InputScope="TelephoneNumber"></TextBox>
        <TextBlock x:Name="Slash" Grid.Column="2" Text="/" HorizontalAlignment="Center" VerticalAlignment="Center"></TextBlock>
        <TextBox x:Name="OddsDenominator" Grid.Column="3" Width="90" Height="70" VerticalAlignment="Center" TextAlignment="Center" MaxLength="3" HorizontalAlignment="Center" InputScope="TelephoneNumber"></TextBox>
        <CheckBox x:Name="EachWay" Grid.Column="4" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="10,0,0,0" />
        <CheckBox x:Name="Place" Grid.Column="5" HorizontalAlignment="Center" VerticalAlignment="Center" BorderThickness="0" Width="71" Margin="10,0,0,0" Padding="0" />
        <ComboBox x:Name="Result" Grid.Column="6" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="Black" Background="White">
            <ComboBoxItem Content="Win" />
            <ComboBoxItem Content="Place" />
            <ComboBoxItem Content="Lose" />
        </ComboBox>
    </Grid>
</UserControl>

它在MainPage中显示如下：

<phone:PhoneApplicationPage xmlns:my="clr-namespace:MojoPinBetOddsCalculator"  
    x:Class="MojoPinBetOddsCalculator.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <!--LayoutRoot is the root grid where all page content is placed-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel contains the name of the application and page title-->
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="ApplicationTitle" Text="BET ODDS CALCULATOR" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="calculate" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>
        <!--ContentPanel - place additional content here-->
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0" HorizontalAlignment="Stretch">
            <Grid x:Name="Scrollable">
                <ScrollViewer>
                <Grid x:Name="BettingGrid">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"></RowDefinition>
                        <RowDefinition Height="*"></RowDefinition>
                    </Grid.RowDefinitions>
                    <Grid x:Name="BetList">
                        <Grid.RowDefinitions>
                            <RowDefinition Height="30"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                            <RowDefinition Height="70"></RowDefinition>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="50*"></ColumnDefinition>
                            <ColumnDefinition Width="70*"></ColumnDefinition>
                            <ColumnDefinition Width="30*"></ColumnDefinition>
                            <ColumnDefinition Width="70*"></ColumnDefinition>
                            <ColumnDefinition Width="70*"></ColumnDefinition>
                            <ColumnDefinition Width="70*"></ColumnDefinition>
                            <ColumnDefinition Width="100*"></ColumnDefinition>
                        </Grid.ColumnDefinitions>
                        <TextBlock Text="EW"  Style="{StaticResource PhoneTextNormalStyle}" Grid.Row="0" Grid.Column="4" HorizontalAlignment="Center" />
                        <TextBlock Text="Place"  Style="{StaticResource PhoneTextNormalStyle}" Grid.Row="0" Grid.Column="5" HorizontalAlignment="Center" />
                        <TextBlock Text="Result"  Style="{StaticResource PhoneTextNormalStyle}" Grid.Row="0" Grid.Column="6" HorizontalAlignment="Center" />
                        <my:OddsRow Grid.Row="1" Grid.ColumnSpan="7" Row="1"/>
                        <my:OddsRow Grid.Row="2" Grid.ColumnSpan="7" Row="2"/>
                        <my:OddsRow Grid.Row="3" Grid.ColumnSpan="7" Row="3"/>
                        <my:OddsRow Grid.Row="4" Grid.ColumnSpan="7" Row="4"/>
                        <my:OddsRow Grid.Row="5" Grid.ColumnSpan="7" Row="5"/>
                        <my:OddsRow Grid.Row="6" Grid.ColumnSpan="7" Row="6"/>
                    </Grid>
                    <Grid x:Name="ControlsGrid" Grid.Row="1">
                        <Button x:Name="AddRowButton" Background="#BFFFFFFF" BorderBrush="#BFFFFFFF" Foreground="Black" Content="Add Row" FontSize="16" Click="AddRowButton_Click" Height="70" />
                    </Grid>
                </Grid>
                </ScrollViewer>
            </Grid>
        </Grid>
    </Grid>
</phone:PhoneApplicationPage>

另外，ComboBox可以工作，而OddsRow的代码也可以按预期工作......单独使用。合并后，它不会显示项目。

OddsRow.xaml.cs 

public partial class OddsRow : UserControl
{
    private int m_Row;

    public OddsRow()
    {
        InitializeComponent();
    }

    public int Row
    {
        get
        {
            return m_Row;
        }
        set
        {
            m_Row = value;
            RowNumber.Text = m_Row + " - ";
        }
    }
}

1 个答案:

答案 0 :(得分：2)

为了爱一切，请不要使用库存ComboBox。使用ListPicker之类的内容。它将使您的应用程序看起来与Metro UI更加一致。

相关问题
最新问题