我遇到了这个奇怪的问题，滚动查看器中的内容会增加大小，然后滚动查看器显示的是水平滚动条。然而，ScrollViewer 最终所在的网格似乎没有调整到足以显示滚动条的大小。
我已经隔离了这个示例应用程序中的问题，基本上是一些 xaml 和一些代码来模拟内容大小的增加。
请注意，当您单击调整大小按钮时，右侧滚动条没有正确显示，我添加了一些填充以显示它在那里但不在正确的位置。
如果我删除第一行，它似乎可以工作。
任何想法和提前感谢男孩和女孩？
<UserControl x:Class="SilverlightApplication7.MainPage"
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"
>
<Grid
ShowGridLines="True"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
>
<Grid.RowDefinitions>
<RowDefinition x:Name="DealHeaderRow" Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="DealBarColumn" Width="Auto"></ColumnDefinition>
<ColumnDefinition x:Name="MarketViewerColumn" Width="Auto"></ColumnDefinition>
<ColumnDefinition x:Name="DealEditorColumn" Width="*" ></ColumnDefinition>
<ColumnDefinition x:Name="InfoColumn" Width="Auto"></ColumnDefinition>
</Grid.ColumnDefinitions>
<ContentControl
x:Name="DealBarRegionContentControl"
Grid.Row="0"
Grid.Column="0"
Grid.RowSpan="2"
VerticalContentAlignment="Stretch"
HorizontalAlignment="Stretch"
Margin="0">
<TextBlock Text="DealBarRegion" Width="150" />
</ContentControl>
<ContentControl
Grid.Row="0"
Grid.Column="1"
Grid.RowSpan="2"
VerticalContentAlignment="Stretch"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch">
<Border Background="#FF9AF172">
<TextBlock Text="MarketViewerRegion" Width="150" />
</Border>
</ContentControl>
<ContentControl
Grid.Column="2"
Grid.ColumnSpan="2"
Grid.Row="0"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch" >
<Border Background="#FFC1FC9F">
<TextBlock Text="DealHeaderRegion" />
</Border>
</ContentControl>
<ContentControl
Grid.Column="2"
Grid.Row="1"
VerticalAlignment="Top"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch">
<Border Background="MistyRose" >
<TextBlock Text="DealEditorRegion" />
</Border>
</ContentControl>
<Grid
Grid.Column="3"
Grid.Row="1"
>
<ContentControl
x:Name="InfoRegionControl"
VerticalContentAlignment="Stretch"
HorizontalAlignment="Stretch">
<!-- without the padding here you can't see the scroll bar at all !! Its like the
scroll ScrollViewer isn't correctly calculating its width to include the scroll bar,
or the grid isn't sizing at the points its visible??-->
<Border Padding="0,0,9,0" MinWidth="200" x:Name="DealInfoControlPlaceHolder">
<ScrollViewer
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalScrollBarVisibility="Auto"
HorizontalScrollBarVisibility="Auto"
>
<StackPanel x:Name="ScrollContentPlaceHolder">
<Button Click="Button_Click" Content="Rezize Column" x:Name="ResizeButton" />
</StackPanel>
</ScrollViewer>
</Border>
</ContentControl>
</Grid>
</Grid>
这是背后的代码：
using System.Windows;
using System.Windows.Controls;
namespace SilverlightApplication7
{
public partial class MainPage : UserControl
{
double _dealInfoControlPlaceHolderHeight = 0;
double _dealInfoControlPlaceHolderWidth = 0;
public MainPage()
{
InitializeComponent();
Loaded += (o, e) =>
{
// cache the original width and height
_dealInfoControlPlaceHolderHeight = DealInfoControlPlaceHolder.Height;
_dealInfoControlPlaceHolderWidth = DealInfoControlPlaceHolder.Width;
};
}
private void Button_Click(object sender, RoutedEventArgs e)
{
if (ScrollContentPlaceHolder.Height == 1200)
{
ScrollContentPlaceHolder.Height = _dealInfoControlPlaceHolderHeight;
ScrollContentPlaceHolder.Width = _dealInfoControlPlaceHolderWidth;
}
else
{
ScrollContentPlaceHolder.Height = 1200;
ScrollContentPlaceHolder.Width = 250;
}
}
}
}