昨日在写Silverlight程序的时候，遇到一个问题，感觉是Silverlight的Bug。使用版本是Silverlight5。异常信息如下：
行: 56
错误: Silverlight 应用程序中未处理的错误
代码: 4004
类别: ManagedRuntimeError
消息: System.ArgumentException: 值不在预期的范围内。
位于 System.Windows.Size.set_Width(Double value)
位于 System.Windows.Controls.Primitives.TabPanel.ArrangeHorizontal(Size arrangeSize)
位于 System.Windows.Controls.Primitives.TabPanel.ArrangeOverride(Size finalSize)
位于 System.Windows.FrameworkElement.ArrangeOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
给出一个示例代码:
<UserControl
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"
xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" x:Class="SilverlightApplication1.MainPage"
mc:Ignorable="d"
d:DesignHeight="" d:DesignWidth=""> <Grid x:Name="LayoutRoot" Background="White">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="" />
<ColumnDefinition Width="" />
</Grid.ColumnDefinitions>
<Grid x:Name="LayoutLeft" Grid.Column="">
<controls:TabControl x:Name="BottomContent" Grid.Column="" Grid.Row="">
<controls:TabItem x:Name="Item1" Header="TabItem1" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item2" Header="TabItem2" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item3" Header="TabItem3" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item4" Header="TabItem4" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item5" Header="TabItem5" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item6" Header="TabItem6" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item7" Header="TabItem7" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item8" Header="TabItem8" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item9" Header="TabItem9" Height=""></controls:TabItem>
<controls:TabItem x:Name="Item10" Header="TabItem10" Height=""></controls:TabItem>
</controls:TabControl>
</Grid>
<controls:GridSplitter x:Name="StretchRight" Grid.Column="" Background="#C8E0FB" Margin="0,0,0,0" HorizontalAlignment="Stretch" />
<Grid x:Name="LayoutRight" Grid.Column="">
<sdk:DataGrid x:Name="DgInfo" ColumnHeaderHeight="" Margin="" AutoGenerateColumns="False" IsReadOnly="True">
<sdk:DataGrid.Columns>
<sdk:DataGridTemplateColumn Header="Column1" Width=""></sdk:DataGridTemplateColumn>
<sdk:DataGridTextColumn Header="Column2" Width=""></sdk:DataGridTextColumn>
<sdk:DataGridTextColumn Header="Column3" Width=""></sdk:DataGridTextColumn>
</sdk:DataGrid.Columns>
</sdk:DataGrid>
</Grid>
</Grid>
</UserControl>
using System.Windows.Controls; namespace SilverlightApplication1
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
this.InitTabItem();
} private void InitTabItem()
{
Item3.Visibility = System.Windows.Visibility.Collapsed;
Item4.Visibility = System.Windows.Visibility.Visible;
Item5.Visibility = System.Windows.Visibility.Collapsed;
Item6.Visibility = System.Windows.Visibility.Collapsed;
}
}
}
奇怪的就是InitTabItem方法的这几行代码，如果不隐藏TabItem,程序运行正常。一旦去隐藏TabItem，在拖拽GridSplitter的时候，有时会抛出异常。
请高手指点迷津。