SketchFlow原型：带有网格控件的页面会抛出错误，而带有草图流样式的页面则不会。 [英] SketchFlow prototype: Pages with grid control throws error whereas thoses with sketchflow styles do not.

问题描述

我正在尝试使用Sketchflow构建原型。我用了一个网格。完成数据绑定步骤。当我尝试运行项目时，除了我使用网格控件的页面之外，所有其他页面都使用草图流样式正确显示。

下面是Xaml文件和我得到的错误。我是否需要使用除Sketchflow样式之外的其他控件进行任何其他设置。 


< 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"
  mc：Ignorable ="d"
  xmlns：data ="clr-namespace：System.Windows.Controls; assembly = System.Windows.Controls.Data"
  xmlns：i ="clr-namespace：System.Windows.Interactivity; assembly = System.Windows.Interactivity"xmlns：pb ="clr-namespace：Microsoft.Expression.Prototyping.Beha vior; assembly = Microsoft.Expression.Prototyping.Interactivity"
  x：Class ="DirtyHands1Screens.Screen_1_3"
  Width ="640"Height ="480">
  ;< UserControl.Resources>
  < ResourceDictionary>
   < ResourceDictionary.MergedDictionaries>
    < ResourceDictionary Source ="ProjectDataSources.xaml"/>
   < /ResourceDictionary.MergedDictionaries>
  < / ResourceDictionary>
 < / UserControl .Resources>

I am trying to build a prototype using Sketchflow. I have used a grid. Completed the data binding step. When I try to run the project all other pages with sketchflow styles showup properly except the pages where I have used a grid control.

Below is the Xaml file and the error I am getting. Do I need to do any additional setting for using controls other than the Sketchflow styles. 



<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"
 mc:Ignorable="d"
 xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"
 xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" xmlns:pb="clr-namespace:Microsoft.Expression.Prototyping.Behavior;assembly=Microsoft.Expression.Prototyping.Interactivity"
 x:Class="DirtyHands1Screens.Screen_1_3"
 Width="640" Height="480">
 <UserControl.Resources>
  <ResourceDictionary>
   <ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="ProjectDataSources.xaml"/>
   </ResourceDictionary.MergedDictionaries>
  </ResourceDictionary>
 </UserControl.Resources>

 < Grid x：Name ="LayoutRoot"Background ="White"DataContext ="{Binding Source = {StaticResource JobReview}}">
  < TextBlock Height ="14"Horizo​​ntalAlignment ="Left"Margin ="117,66,0,0"Style ="{StaticResource SubtitleLeft-Sketch}"VerticalAlignment ="Top"Width ="148"FontSize = "13.333"Text ="职务"TextWrapping ="Wrap"/>
  < data：DataGrid Margin ="140,95,41,0"ItemsSource ="{Binding Collectio n，Mode = OneWay}"Height ="134"VerticalAlignment ="Top">
   < data：DataGrid.Columns>
    < ; data：DataGridCheckBoxColumn />
   < / data：DataGrid.Columns>
  < / data：DataGrid>
  < ; ComboBox Height ="17"Horizo​​ntalAlignment ="Right"Margin ="0,61,42,0"Style ="{StaticResource ComboBox-Sketch}"VerticalAlignment ="Top"Width ="105"FontSize ="10.667">
   < ComboBoxItem Height ="100"Style ="{StaticResource ComboBoxItem-Sketch}"Width ="100"Content ="All& #xa; Open& #xa; Closed"FontSize = "10.667"/>
  < / ComboBox>
  < Button Horizo​​ntalAlignment ="Left"Margin ="142,237,0,220"Style ="{StaticResource Button-Sketch }"Width ="93"Content ="Show Detail"FontSize ="10.667"/>
  < ScrollViewer Height ="32"Margin ="143,0,0,167"Style ="{ StaticResource ScrollViewer-Sketch-List}"VerticalAlignment ="Bottom"Horizo​​ntalAlig nment ="Left"Width ="167">
   < ListBoxItem FontSize ="8"Margin ="0"Style ="{StaticResource ListBoxItem-Sketch}"Content ="Completed。 doc& #xd;& #xa; Completed.jpg& #xd;& #xa; Completed.wav"/>
  < / ScrollViewer>
   < Button FontSize ="8"Height ="13"Margin ="276,0,0,151"Style ="{StaticResource Button-Sketch}"VerticalAlignment ="Bottom"Content ="Download"Horizo​​ntalAlignment ="Left"Width =" 33"/>
  < Button Margin ="247,237,300,220"Style ="{StaticResource Button-Sketch}"Content ="Award points"FontSize ="10.667">
    < i：Interaction.Triggers>
    < i：EventTrigger EventName ="Click">
      < pb：NavigateToScreenAction TargetScreen ="DirtyHands1Screens.Screen_1_5"/>
    < / i：EventTrigger>
   < / i：Interaction .Triggers>
  < / Button>
 < / Grid>
< / UserControl>

错误：Silverlight应用程序中未处理的错误
代码：4004  &NBSP;&NBSP;
分类：ManagedRuntimeError      
消息：System.ArgumentNullException：[ArgumentNull_Generic]
参数：
调试资源字符串不可用。通常，密钥和参数提供了足够的信息来诊断问题。请参阅 http://go.microsoft.com /fwlink/?linkid=106663&Version=3.0.40818.0&File=mscorlib.dll&Key=ArgumentNull_Generic
参数名称：binding
  在System.Windows.Data.BindingOperations.SetBinding（DependencyObject目标，DependencyProperty dp，BindingBase绑定）
  在System.Windows.FrameworkElement.SetBinding（DependencyProperty dp，Binding binding）
  在System.Windows.Controls.DataGridCheckBoxColumn.ConfigureCheckBox（CheckBox checkBox）
  在System.Windows.Controls.DataGridCheckBoxColumn.GenerateElement（DataGridCell cell，Object dataItem）
  在System.Windows.Controls.DataGridColumn.GenerateElementInternal（DataGridCell cell，Object dataItem）
  在System.Windows.Controls.DataGrid.PopulateCellContent（Boolean isCellEdited，DataGridColumn dataGridColumn，DataGridRow dataGridRow，DataGridCell dataGridCell）
  在System.Windows.Controls.DataGrid.AddNewCellPrivate（DataGridRow行，DataGridColumn列）
  在System.Windows.Controls.DataGrid.CompleteCellsCollection（DataGridRow dataGridRow）
  在System.Windows.Controls.DataGrid.GenerateRow（Int32 rowIndex，Int32 slot，Object dataContext）
  在System.Windows.Controls.DataGrid.GenerateRow（Int32 rowIndex，Int32 slot）
  在System.Windows.Controls.DataGrid.InsertDisplayedElement（Int32 slot，Boolean updateSlotInformation）
  在System.Windows.Controls.DataGrid.GetExactSlotElementHeight（Int32 slot）
  在System.Windows.Controls.DataGrid.UpdateDisplayedRows（Int32 newFirstDisplayedSlot，Double displayHeight）
  在System.Windows.Controls.DataGrid.ComputeScrollBarsLayout（）
  在System.Windows.Controls.DataGrid.MeasureOverride（Size availableSize）
  在System.Windows.FrameworkElement.MeasureOverride（IntPtr nativeTarget，Single inWidth，Single inHeight，Single& outWidth，Single& outHeight）    

 <Grid x:Name="LayoutRoot" Background="White" DataContext="{Binding Source={StaticResource JobReview}}">
  <TextBlock Height="14" HorizontalAlignment="Left" Margin="117,66,0,0" Style="{StaticResource SubtitleLeft-Sketch}" VerticalAlignment="Top" Width="148" FontSize="13.333" Text="Job Title" TextWrapping="Wrap"/>
  <data:DataGrid Margin="140,95,41,0" ItemsSource="{Binding Collection, Mode=OneWay}" Height="134" VerticalAlignment="Top">
   <data:DataGrid.Columns>
    <data:DataGridCheckBoxColumn/>
   </data:DataGrid.Columns>
  </data:DataGrid>
  <ComboBox Height="17" HorizontalAlignment="Right" Margin="0,61,42,0" Style="{StaticResource ComboBox-Sketch}" VerticalAlignment="Top" Width="105" FontSize="10.667">
   <ComboBoxItem Height="100" Style="{StaticResource ComboBoxItem-Sketch}" Width="100" Content="All&#xa;Open&#xa;Closed" FontSize="10.667"/>
  </ComboBox>
  <Button HorizontalAlignment="Left" Margin="142,237,0,220" Style="{StaticResource Button-Sketch}" Width="93" Content="Show Detail" FontSize="10.667"/>
  <ScrollViewer Height="32" Margin="143,0,0,167" Style="{StaticResource ScrollViewer-Sketch-List}" VerticalAlignment="Bottom" HorizontalAlignment="Left" Width="167">
   <ListBoxItem FontSize="8" Margin="0" Style="{StaticResource ListBoxItem-Sketch}" Content="Completed.doc&#xd;&#xa;Completed.jpg&#xd;&#xa;Completed.wav"/>
  </ScrollViewer>
  <Button FontSize="8" Height="13" Margin="276,0,0,151" Style="{StaticResource Button-Sketch}" VerticalAlignment="Bottom" Content="Download" HorizontalAlignment="Left" Width="33"/>
  <Button Margin="247,237,300,220" Style="{StaticResource Button-Sketch}" Content="Award points" FontSize="10.667">
   <i:Interaction.Triggers>
    <i:EventTrigger EventName="Click">
     <pb:NavigateToScreenAction TargetScreen="DirtyHands1Screens.Screen_1_5"/>
    </i:EventTrigger>
   </i:Interaction.Triggers>
  </Button>
 </Grid>
</UserControl>

*******

Error: Unhandled Error in Silverlight Application
Code: 4004   
Category: ManagedRuntimeError      
Message: System.ArgumentNullException: [ArgumentNull_Generic]
Arguments:
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=3.0.40818.0&File=mscorlib.dll&Key=ArgumentNull_Generic
Parameter name: binding
   at System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding)
   at System.Windows.FrameworkElement.SetBinding(DependencyProperty dp, Binding binding)
   at System.Windows.Controls.DataGridCheckBoxColumn.ConfigureCheckBox(CheckBox checkBox)
   at System.Windows.Controls.DataGridCheckBoxColumn.GenerateElement(DataGridCell cell, Object dataItem)
   at System.Windows.Controls.DataGridColumn.GenerateElementInternal(DataGridCell cell, Object dataItem)
   at System.Windows.Controls.DataGrid.PopulateCellContent(Boolean isCellEdited, DataGridColumn dataGridColumn, DataGridRow dataGridRow, DataGridCell dataGridCell)
   at System.Windows.Controls.DataGrid.AddNewCellPrivate(DataGridRow row, DataGridColumn column)
   at System.Windows.Controls.DataGrid.CompleteCellsCollection(DataGridRow dataGridRow)
   at System.Windows.Controls.DataGrid.GenerateRow(Int32 rowIndex, Int32 slot, Object dataContext)
   at System.Windows.Controls.DataGrid.GenerateRow(Int32 rowIndex, Int32 slot)
   at System.Windows.Controls.DataGrid.InsertDisplayedElement(Int32 slot, Boolean updateSlotInformation)
   at System.Windows.Controls.DataGrid.GetExactSlotElementHeight(Int32 slot)
   at System.Windows.Controls.DataGrid.UpdateDisplayedRows(Int32 newFirstDisplayedSlot, Double displayHeight)
   at System.Windows.Controls.DataGrid.ComputeScrollBarsLayout()
   at System.Windows.Controls.DataGrid.MeasureOverride(Size availableSize)
   at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)    

推荐答案

这实际上不是混合问题。问题是，当设置了DataContext并且未绑定列时，DataGrid复选框列会引发异常。

而不是
< data：DataGridCheckBoxColumn />

以下内容应该修复它：
< data：DataGridTextColumn Binding ="{Binding Property1}" Header ="Property1"/>
谢谢，
Unni

This is actually not a Blend issue. The problem is that the DataGrid checkbox column thows an exception when a DataContext is set and the column is not bound.

Instead of
<data:DataGridCheckBoxColumn/>

Something like the following should fix it:
<data:DataGridTextColumn Binding="{Binding Property1}" Header="Property1"/>

Thanks,
Unni

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