WPF XAML ScrollViewer将不会滚动

我无法使scrollviewer滚动

如果我设置VerticalScrollBarVisibility=“Auto”，它甚至不会显示，这表明它认为不需要它

我尝试了不同的方法来调整网格的行高，比如将其从自动更改为*但仍然没有成功

这是我的XAML

<UserControl mc:Ignorable="d" Height="680" Width="750"
         d:DesignHeight="300" d:DesignWidth="300">

<Border Name="b" Margin="10,0,10,10" Style="{DynamicResource BorderStyle}" Background="{DynamicResource BackgroundBrush}">
    <DockPanel x:Name="MainPanel">

        <!-- header area -->
        <DockPanel Margin="10,0,10,0" DockPanel.Dock="Top" Height="80" x:Name="HeaderPanel">
            <TextBlock Text="Uncertainty in Sample - Volume Final and Volume Initial" Style="{DynamicResource HeaderStyle}" FontWeight="Bold" Margin="5,0,0,0" VerticalAlignment="Center" Foreground="{DynamicResource HeaderFontColor}"/>
            <Image Source="/images/sample.jpg" HorizontalAlignment="Right"></Image>
        </DockPanel>

     <Border Name="b">
        <StackPanel>

            <Separator Height="1" Margin="0" VerticalAlignment="Top" Width="750" HorizontalAlignment="Left"/>

            <ScrollViewer VerticalScrollBarVisibility="Auto" MaxHeight="{Binding Path=ActualHeight, ElementName=b, Mode=OneWay}">                    <Grid HorizontalAlignment="Left" x:Name="Outer" VerticalAlignment="Top" Margin="0,10,0,0">

                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="Auto" />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                    </Grid.RowDefinitions>

                    <GroupBox Grid.Row="0" Grid.Column="0" Header="Volume Final" Style="{DynamicResource GroupBoxStyle}">

                        <Grid HorizontalAlignment="Left" x:Name="GridVolume" VerticalAlignment="Top" Margin="0,0,0,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition Height="Auto" />
                                <RowDefinition Height="Auto" />
                            </Grid.RowDefinitions>

                            <Label Grid.Row="0" Grid.Column="0" Content="Select Volumetric size:" Target="{Binding ElementName=VolumetricComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                            <ComboBox x:Name="VolumetricComboBox" Grid.Row="0" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Label" ItemsSource="{Binding Path=Volumetrics}" SelectedItem="{Binding Path=SelectedVolumeFinalVolumetric, Mode=TwoWay}" Height="22" />


                            <Label Grid.Row="1" Grid.Column="0" Content="Select Solvent:" Target="{Binding ElementName=SolventComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                        <ComboBox x:Name="SolventComboBox" Grid.Row="1" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Solvent" ItemsSource="{Binding Path=ThermalExpansions}" SelectedItem="{Binding Path=SelectedVolumeFinalThermalExpansion, Mode=TwoWay}" Height="22" />

                            <Label Grid.Row="2" Grid.Column="0" Content="Select Temperature (° c):" Target="{Binding ElementName=SolventComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                        <ComboBox x:Name="TemperatureComboBox" Grid.Row="2" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="TemperatureValue" ItemsSource="{Binding Path=Temperatures}" SelectedItem="{Binding Path=SelectedVolumeFinalTemperature, Mode=TwoWay}" Height="22" />

                        </Grid>
                    </GroupBox>


                    <GroupBox Grid.Row="0" Grid.Column="1" Header="Area" Style="{DynamicResource GroupBoxStyle}">
                        <StackPanel>
                            <StackPanel Orientation="Horizontal" VerticalAlignment="Top">
                                <Label Content="System Inj. Reproducibility (% RSD):" Foreground="{DynamicResource InputFontColor}" />
                                <TextBox TextWrapping="Wrap" Style="{StaticResource TextStyle}" x:Name="SystemInjectionTextBox" Width="135" Text="{Binding Path=Sample.Precision.SystemInjectionReproducibility}" Margin="5,0,0,0" IsEnabled="True"/>
                            </StackPanel>
                            <StackPanel Orientation="Horizontal" VerticalAlignment="Top">
                                <Label Content="Enter % RSD of Sample results (zero if unknown):" Target="{Binding ElementName=AreaTextBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}"/>
                                <TextBox TextWrapping="Wrap" Style="{StaticResource TextStyle}" x:Name="AreaTextBox" Width="70" Text="{Binding Path=Sample.Precision.RSDKnownAmount}" HorizontalAlignment="Left" Margin="5,0,0,0" />
                            </StackPanel>
                        </StackPanel>
                    </GroupBox>

                    <GroupBox Grid.Row="1" Grid.Column="0" Header="Volume Initial" Style="{DynamicResource GroupBoxStyle}">
                        <Grid HorizontalAlignment="Left" x:Name="GridMass" VerticalAlignment="Top" Margin="0,10,0,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition Height="Auto" />
                            </Grid.RowDefinitions>

                            <Label Grid.Row="0" Grid.Column="0" Content="Select Balance:" Target="{Binding ElementName=BalanceComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                            <ComboBox x:Name="BalanceComboBox" Grid.Row="0" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Description" ItemsSource="{Binding Path=Balances}" SelectedItem="{Binding Path=SelectedVolumeIntitialBalance, Mode=TwoWay}" Height="22" />

                            <Label Grid.Row="1" Grid.Column="0" Content="Mass Weighed (g):" Target="{Binding ElementName=MassWeighedTextBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                            <TextBox Grid.Row="1" Grid.Column="1" TextWrapping="Wrap" Style="{StaticResource TextStyle}" x:Name="MassWeighedTextBox" Width="135" Text="{Binding Path=Sample.VolumeInitial.Mass.MassWeighed}" HorizontalAlignment="Left" Margin="5,0,0,0"/>
                        </Grid>

                    </GroupBox>

                    <GroupBox Grid.Row="2" Grid.Column="0" Header="Reported Units" Style="{DynamicResource GroupBoxStyle}">
                        <Grid HorizontalAlignment="Left" x:Name="GridReportedUnits" VerticalAlignment="Top" Margin="0,10,0,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                            </Grid.RowDefinitions>

                            <Label Grid.Row="0" Grid.Column="0" Content="Select Reported Units:" Target="{Binding ElementName=BalanceComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                            <StackPanel Grid.Row="0" Grid.Column="1" Orientation="Horizontal" VerticalAlignment="Center">
                                <StackPanel.Resources>
                                    <views:EnumBooleanConverter x:Key="enumBooleanConverter" />
                                </StackPanel.Resources>
                                <RadioButton GroupName="ReportedUnits" Content="W/V" IsChecked="{Binding Path=SelectedRadioButton, Converter={StaticResource enumBooleanConverter}, ConverterParameter=WeightVolume}" Command="{Binding RadioClicked}" Margin="0, 0, 10, 0" />
                                <RadioButton GroupName="ReportedUnits" Content="W/W" IsChecked="{Binding Path=SelectedRadioButton, Converter={StaticResource enumBooleanConverter}, ConverterParameter=WeightWeight}" Command="{Binding RadioClicked}" Margin="0, 0, 10, 0"/>
                            </StackPanel>
                        </Grid>
                    </GroupBox>

                    <GroupBox Grid.ColumnSpan="3" Grid.Row="3" Header="Density" Style="{DynamicResource GroupBoxStyle}" Visibility="{Binding Path=DensityVisible}">

                        <StackPanel>
                            <Grid HorizontalAlignment="Left" x:Name="GridDensity" VerticalAlignment="Top" Margin="5,5,0,0">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto" />
                                    <ColumnDefinition Width="Auto" />
                                </Grid.ColumnDefinitions>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto" />
                                </Grid.RowDefinitions>

                                <Label Grid.Row="0" Grid.Column="0" Content="Enter Method of Density Determination:" Target="{Binding ElementName=DensityDeterminationComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                <StackPanel Orientation="Horizontal" Grid.Row="0" Grid.Column="1">
                                    <ComboBox x:Name="DensityDeterminationComboBox" Width="200" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Method" ItemsSource="{Binding Path=DensityDeterminations}" SelectedItem="{Binding Path=SelectedDensityDetermination, Mode=TwoWay}" Height="22" />
                                    <Label Grid.Row="0" Grid.Column="0" Content=" u(d) = 1" Foreground="{DynamicResource InputFontColor}" Visibility="{Binding Path=DensityClientSuppliedVisible}"/>
                                </StackPanel>
                            </Grid>


                            <Grid HorizontalAlignment="Left" Grid.Row="4" Grid.ColumnSpan="3" x:Name="OuterDensityGridMass" VerticalAlignment="Top" Margin="0,20,0,0">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto" />
                                    <ColumnDefinition Width="Auto" />
                                    <ColumnDefinition Width="Auto" />
                                </Grid.ColumnDefinitions>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto" />
                                </Grid.RowDefinitions>

                                <GroupBox Grid.Row="0" Grid.Column="0" Margin="5,5,5,5" Header="" Style="{DynamicResource GroupBoxStyle}" Visibility="{Binding Path=DensityDensitoVisible}">

                                    <Grid HorizontalAlignment="Left" x:Name="DensityGridUserEntered" VerticalAlignment="Top" Margin="0,10,0,0">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="Auto" />
                                            <ColumnDefinition Width="Auto" />
                                        </Grid.ColumnDefinitions>
                                        <Grid.RowDefinitions>
                                            <RowDefinition Height="Auto" />
                                        </Grid.RowDefinitions>

                                        <Label Grid.Row="1" Grid.Column="0" Content="Enter Density (g/ml):" Target="{Binding ElementName=DensityUserEnteredTextBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <TextBox Grid.Row="1" Grid.Column="1" TextWrapping="Wrap" Style="{StaticResource TextStyle}" x:Name="DensityUserEnteredTextBox" Width="135" Text="{Binding Path=UserEnteredDensity, Mode=TwoWay}" HorizontalAlignment="Left" Margin="5,0,0,0"/>
                                    </Grid>

                                </GroupBox>

                                <GroupBox Grid.Row="0" Grid.Column="0" Margin="5,5,5,5" Header="Mass" Style="{DynamicResource GroupBoxStyle}" Visibility="{Binding Path=DensityMassVolumeVisible}">

                                    <Grid HorizontalAlignment="Left" x:Name="DensityGridMass" VerticalAlignment="Top" Margin="0,10,0,0">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="Auto" />
                                            <ColumnDefinition Width="Auto" />
                                        </Grid.ColumnDefinitions>
                                        <Grid.RowDefinitions>
                                            <RowDefinition Height="Auto" />
                                            <RowDefinition Height="Auto" />
                                        </Grid.RowDefinitions>

                                        <Label Grid.Row="0" Grid.Column="0" Content="Select Balance:" Target="{Binding ElementName=DensityBalanceComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <ComboBox x:Name="DensityBalanceComboBox" Grid.Row="0" Grid.Column="1" Width="200" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Description" ItemsSource="{Binding Path=Balances}" SelectedItem="{Binding Path=SelectedDensityBalance, Mode=TwoWay}" Height="22" />

                                        <Label Grid.Row="1" Grid.Column="0" Content="Mass Weighed (g):" Target="{Binding ElementName=DensityMassWeighedTextBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <TextBox Grid.Row="1" Grid.Column="1" TextWrapping="Wrap" Style="{StaticResource TextStyle}" x:Name="DensityMassWeighedTextBox" Width="135" Text="{Binding Path=Sample.Density.Mass.MassWeighed}" HorizontalAlignment="Left" Margin="5,0,0,0"/>
                                    </Grid>

                                </GroupBox>

                                <GroupBox Grid.Row="0" Grid.Column="1" Header="Volume" Style="{DynamicResource GroupBoxStyle}" Visibility="{Binding Path=DensityMassVolumeVisible}" Margin="5,5,5,5">

                                    <Grid HorizontalAlignment="Left" x:Name="DensityGridVolume" VerticalAlignment="Top" Margin="0,10,0,0">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="Auto" />
                                            <ColumnDefinition Width="Auto" />
                                        </Grid.ColumnDefinitions>
                                        <Grid.RowDefinitions>
                                            <RowDefinition Height="Auto" />
                                            <RowDefinition Height="Auto" />
                                            <RowDefinition Height="Auto" />
                                        </Grid.RowDefinitions>

                                        <Label Grid.Row="0" Grid.Column="0" Content="Select Volumetric size:" Target="{Binding ElementName=DensityVolumetricComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <ComboBox x:Name="DensityVolumetricComboBox" Grid.Row="0" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Label" ItemsSource="{Binding Path=Volumetrics}" SelectedItem="{Binding Path=SelectedDensityVolumetric, Mode=TwoWay}" Height="22" />

                                        <Label Grid.Row="1" Grid.Column="0" Content="Select Solvent:" Target="{Binding ElementName=DensitySolventComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <ComboBox x:Name="DensitySolventComboBox" Grid.Row="1" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="Solvent" ItemsSource="{Binding Path=ThermalExpansions}" SelectedItem="{Binding Path=SelectedDensityThermalExpansion, Mode=TwoWay}" Height="22" />

                                        <Label Grid.Row="2" Grid.Column="0" Content="Select Temperature:" Target="{Binding ElementName=DensityTemperatureComboBox, Mode=OneWay}" Foreground="{DynamicResource InputFontColor}" />
                                        <ComboBox x:Name="DensityTemperatureComboBox" Grid.Row="2" Grid.Column="1" Width="180" HorizontalAlignment="Left" Margin="5,0,0,0" DisplayMemberPath="TemperatureValue" ItemsSource="{Binding Path=Temperatures}" SelectedItem="{Binding Path=SelectedDensityTemperature, Mode=TwoWay}" Height="22" />
                                    </Grid>

                                </GroupBox>

                            </Grid>
                        </StackPanel>
                    </GroupBox>

                </Grid>

            </ScrollViewer>
          </StackPanel>
         </Border>

    </DockPanel>
</Border>
</UserControl>

---

出于某种原因，

StackPanel

内部

DockPanel

决定它可以对内容使用无限高度。ScrollViewer不显示滚动，因为其高度等于内容高度

为ScrollViewer设置

MaxHeight

，应该可以解决这个问题。诀窍是为

MaxHeight

找到正确的值-如果窗口已打开，则将其绑定到其他元素的高度

<DockPanel x:Name="MainPanel">

    <!-- header area -->
    <DockPanel Margin="10,0,10,0" DockPanel.Dock="Top" Height="80" x:Name="HeaderPanel">
        <TextBlock Text="Uncertainty in Sample - Volume Final and Volume Initial" Style="{DynamicResource HeaderStyle}" FontWeight="Bold" Margin="5,0,0,0" VerticalAlignment="Center" Foreground="{DynamicResource HeaderFontColor}"/>
        <Image Source="/images/sample.jpg" HorizontalAlignment="Right"></Image>
    </DockPanel>

    <Border Name="b">
    <StackPanel>

        <Separator Height="1" Margin="0" VerticalAlignment="Top" Width="750" HorizontalAlignment="Left"/>

        <ScrollViewer VerticalScrollBarVisibility="Auto"
                      MaxHeight="{Binding Path=ActualHeight, ElementName=b, Mode=OneWay}">
            <Grid>

            </Grid>
        </ScrollViewer>
    </StackPanel>
    </Border>
</DockPanel>

<Border Name="b" Margin="10,0,10,10" Style="{DynamicResource BorderStyle}" Background="{DynamicResource BackgroundBrush}">
    <DockPanel x:Name="MainPanel">

        <!-- header area -->
        <DockPanel Margin="10,0,10,0" DockPanel.Dock="Top" Height="80" x:Name="HeaderPanel">
            <TextBlock Text="Uncertainty in Sample - Volume Final and Volume Initial" Style="{DynamicResource HeaderStyle}" FontWeight="Bold" Margin="5,0,0,0" VerticalAlignment="Center" Foreground="{DynamicResource HeaderFontColor}"/>
            <Image Source="/images/sample.jpg" HorizontalAlignment="Right"></Image>
        </DockPanel>

        <Border Name="b">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="*" />
                </Grid.RowDefinitions>

                <Separator Height="1" Margin="0" VerticalAlignment="Top" Width="750" HorizontalAlignment="Left"/>

                <ScrollViewer VerticalScrollBarVisibility="Auto" MaxHeight="{Binding Path=ActualHeight, ElementName=b, Mode=OneWay}" Grid.Row="1">
                    <Grid HorizontalAlignment="Left" x:Name="Outer" VerticalAlignment="Top" Margin="0,10,0,0">
                        ...
                    </Grid>
                </ScrollViewer>
            </Grid>
        </Border>

    </DockPanel>
</Border>