Grid.RowDefinition在运行时和设计时的不同行为
假设我有一个如下所示的网格：
<Grid>
<Grid.Resources>
<converters:MultiplyHeightByThreeConverter x:Key="multiplyHeightByThreeConverter" />
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="{Binding ElementName=rowPinCode, Path=ActualHeight, Converter={StaticResource multiplyHeightByThreeConverter}}"/>
<RowDefinition x:Name="rowPinCode" Height="Auto" />
.....
.....
</Grid.RowDefinitions>
.....
.....
</Grid>
这是我的转换器代码：
public class MultiplyHeightByThreeConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return (((double)value) * 3);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
在设计时我得到预期的输出：
但是在运行时我没有得到那一行：
我也找到了原因：
我在转换器转换方法的左括号中保留了断点，发现value parameter的值为0.00
如何解决问题？
我还尝试使用Height代替ActualHeight，但后来因为无法将Auto转换为Double
更新：
<Page x:Class="WPF_Client.Pages.Masters.Single.Ledger"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:Self="clr-namespace:WPF_Client"
xmlns:helpers="clr-namespace:WPF_Client.HelperClasses"
xmlns:model="clr-namespace:Data;assembly=Data"
mc:Ignorable="d"
d:DesignHeight="760" d:DesignWidth="1366"
Title="Ledger" DataContext="{StaticResource mainWindowViewModel}">
<Page.Resources>
<CollectionViewSource x:Key="GroupNamesWithCorrespondingEffectsCollection" Source="{Binding GroupNamesWithCorrespondingEffects}" />
<CollectionViewSource x:Key="CreditDebitsCollection" Source="{Binding CreditDebits}" />
</Page.Resources>
<Grid DataContext="{Binding CurrentLedger}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="20" />
<RowDefinition Height="Auto" />
<RowDefinition Height="20" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.3*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="80" />
<ColumnDefinition Width="0.15*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="1" Text="Name" />
<DockPanel Grid.Row="1" Grid.Column="2" Grid.ColumnSpan="3" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding Name}" />
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="1" Text="Group" />
<DockPanel Grid.Row="3" Grid.Column="2" Grid.ColumnSpan="3" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<ComboBox ItemsSource="{DynamicResource Items}"
SelectedValue="{Binding DataContext.SelectedGroupIDinLedger, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}}}"
SelectedValuePath="GroupID" Grid.IsSharedSizeScope="True" TextSearch.TextPath="GroupName">
<ComboBox.Resources>
<CompositeCollection x:Key="Items">
<ComboBoxItem IsEnabled="False" Background="#FF2A2A2A" Foreground="White">
<Grid TextElement.FontWeight="Bold" >
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition Width="50" />
<ColumnDefinition SharedSizeGroup="B" />
</Grid.ColumnDefinitions>
<Grid.Children>
<TextBlock Grid.Column="0" Text="Group Name" />
<TextBlock Grid.Column="2" Text="Effect" />
</Grid.Children>
</Grid>
</ComboBoxItem>
<CollectionContainer Collection="{Binding Source={StaticResource GroupNamesWithCorrespondingEffectsCollection}}" />
</CompositeCollection>
<DataTemplate DataType="{x:Type helpers:GroupNameWithCorrespondingEffect}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition Width="50" />
<ColumnDefinition SharedSizeGroup="B" />
</Grid.ColumnDefinitions>
<Grid.Children>
<TextBlock Grid.Column="0" Text="{Binding GroupName}" />
<TextBlock Grid.Column="2" Text="{Binding CorrespondingEffect}" />
</Grid.Children>
</Grid>
</DataTemplate>
</ComboBox.Resources>
</ComboBox>
</DockPanel>
<TextBlock Grid.Row="5" Grid.Column="1" Grid.ColumnSpan="2" Text="Opening Balance" />
<DockPanel Grid.Row="5" Grid.Column="3" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding OpeningBalance}"/>
</DockPanel>
<ComboBox Grid.Row="5" Grid.Column="4" Margin="10,0,0,0" ItemsSource="{DynamicResource Items}"
SelectedValue="{Binding DataContext.SelectedCreditDebitIDinLedger, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}}}"
SelectedValuePath="CreditDebitID" Grid.IsSharedSizeScope="True" TextSearch.TextPath="Symbol">
<ComboBox.Resources>
<CompositeCollection x:Key="Items">
<ComboBoxItem IsEnabled="False" Background="#FF2A2A2A" Foreground="White">
<Grid TextElement.FontWeight="Bold" >
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition Width="50" />
<ColumnDefinition SharedSizeGroup="B" />
</Grid.ColumnDefinitions>
<Grid.Children>
<TextBlock Grid.Column="0" Text="Value" />
<TextBlock Grid.Column="2" Text="Symbol" />
</Grid.Children>
</Grid>
</ComboBoxItem>
<CollectionContainer Collection="{Binding Source={StaticResource CreditDebitsCollection}}" />
</CompositeCollection>
<DataTemplate DataType="{x:Type model:Master_CreditDebits}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition Width="50" />
<ColumnDefinition SharedSizeGroup="B" />
</Grid.ColumnDefinitions>
<Grid.Children>
<TextBlock Grid.Column="0" Text="{Binding Value}" />
<TextBlock Grid.Column="2" Text="{Binding Symbol}" />
</Grid.Children>
</Grid>
</DataTemplate>
</ComboBox.Resources>
</ComboBox>
<GroupBox Grid.Row="7" Grid.Column="1" Grid.ColumnSpan="4" Header="Credit Limits"
Visibility="{Binding DataContext.CreditLimitsVisibility, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}},
Converter={StaticResource boolToVisibilityConverter}}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="0" Text="Credit Days" />
<DockPanel Grid.Row="1" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding CreditDays}"/>
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="0" Text="Credit Limit" />
<DockPanel Grid.Row="3" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding CreditLimit}"/>
</DockPanel>
</Grid>
</GroupBox>
<GroupBox Grid.Row="9" Grid.Column="1" Grid.ColumnSpan="4" Header="Bank Details"
Visibility="{Binding DataContext.BankDetailsVisibility, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}},
Converter={StaticResource boolToVisibilityConverter}}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="0" Text="A/c No." />
<DockPanel Grid.Row="1" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding BankAccountNo}"/>
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="0" Text="Branch" />
<DockPanel Grid.Row="3" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding BranchName}"/>
</DockPanel>
<TextBlock Grid.Row="5" Grid.Column="0" Text="BSR Code" />
<DockPanel Grid.Row="5" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding BSRCode}"/>
</DockPanel>
</Grid>
</GroupBox>
</Grid>
<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition Height="Auto" />
<RowDefinition Height="20" />
<RowDefinition Height="Auto" />
<RowDefinition Height="20" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.15*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="0.3*" />
</Grid.ColumnDefinitions>
<!--Here is the problem part-->
<GroupBox Grid.Row="1" Grid.Column="1" Header="General Details"
Visibility="{Binding DataContext.GeneralDetailsVisibility, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}},
Converter={StaticResource boolToVisibilityConverter}}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="{Binding ElementName=rowPinCode, Path=ActualHeight, Converter={StaticResource multiplyHeightByThreeConverter}}" />
<RowDefinition Height="10" />
<RowDefinition x:Name="rowPinCode" Height="Auto"/>
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="0" Text="Address" />
<DockPanel Grid.Row="1" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding Address}"/>
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="0" Text="Pincode" />
<DockPanel Grid.Row="3" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding PINCode}"/>
</DockPanel>
<TextBlock Grid.Row="5" Grid.Column="0" Text="City" />
<DockPanel Grid.Row="5" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<ComboBox />
</DockPanel>
<TextBlock Grid.Row="7" Grid.Column="0" Text="State" />
<DockPanel Grid.Row="7" Grid.Column="1" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<ComboBox />
</DockPanel>
</Grid>
</GroupBox>
<GroupBox Grid.Row="3" Grid.Column="1" Header="Contact Details"
Visibility="{Binding DataContext.ContactDetailsVisibility, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}},
Converter={StaticResource boolToVisibilityConverter}}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="0" Text="Contact Person" />
<DockPanel Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding ContactPerson}"/>
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="0" Text="Phone No." />
<DockPanel Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Grid.Column="0" Text="{Binding DataContext.TelephoneNo1, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}}}"/>
<TextBox Grid.Column="1" Text="{Binding DataContext.TelephoneNo2, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}}}" Margin="5,0,0,0"/>
</Grid>
</DockPanel>
<TextBlock Grid.Row="5" Grid.Column="0" Text="Email Address" />
<DockPanel Grid.Row="5" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding EmailAddress}"/>
</DockPanel>
<TextBlock Grid.Row="7" Grid.Column="0" Text="Website" />
<DockPanel Grid.Row="7" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding Website}"/>
</DockPanel>
</Grid>
</GroupBox>
<GroupBox Grid.Row="5" Grid.Column="1" Header="Tax Information"
Visibility="{Binding DataContext.TaxInformationVisibility, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Page}},
Converter={StaticResource boolToVisibilityConverter}}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="1" Grid.Column="0" Text="PAN / IT No." />
<DockPanel Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding PANCardOrITNo}"/>
</DockPanel>
<TextBlock Grid.Row="3" Grid.Column="0" Text="Sales Tax No." />
<DockPanel Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="2" LastChildFill="True">
<TextBlock DockPanel.Dock="Left" Text=":" />
<TextBox Text="{Binding SalesTaxNo}"/>
</DockPanel>
</Grid>
</GroupBox>
</Grid>
</Grid>
</Page>
更新2：
提出建议后：
在设计时：
在运行时：
1 个答案:
答案 0 :(得分：2)
你不需要转换器。如果您希望第一行是第二行的三倍，您可以使用3*给出相对宽度。
<Grid.RowDefinitions>
<RowDefinition Height="3*"/>
<RowDefinition x:Name="rowPinCode" Width="Auto" Height="*" />
.....
</Grid.RowDefinitions>
<强>更新
使用上面提到的行定义在我的结尾完全正常。定义的声明：
<Grid.RowDefinitions>
<RowDefinition Height="5" />
<RowDefinition Height="3*" />
<RowDefinition Height="10" />
<RowDefinition x:Name="rowPinCode" Height="*"/>
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="10" />
<RowDefinition Height="Auto" />
<RowDefinition Height="5" />
</Grid.RowDefinitions>
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