WPF window shows blank

Question

Excel AddIn, c#, .net 4.0, windows 7, ribbon my addin has a ribbon tab, several ribbon buttons,  when one ribbon is clicked,  the addin will send several web service calls and a window will pop up providing data in tab, treeview, gridview etc. data in treeview, gridview are populated from web service calls.  All worked for a particular end user until yesterday When he clicked button, the window seems showing up, but it is kind of behind Excel and could not be focused.  Also it is blank with no tab, treeview, gridview, etc. I verified all web service calls return properly.  The user has windows 7, Excel 2010 (32 bit).  I have no idea what could cause this.  Please help.  this is my WPF window. thanks

<Window x:Class="MIMICWPFLib.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:sharedC="clr-namespace:MIMICShared.Converter;assembly=MstarCommodityShared"
        xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
        xmlns:dxt="clr-namespace:DevExpress.Xpf.Utils.Themes;assembly=DevExpress.Xpf.Core.v11.2"
        xmlns:Controls="clr-namespace:MIMICWPFLib.Controls"
        Title="{Binding Title}"       
    Height="600" Width="850" Top="223" Left="164" ResizeMode="CanResize" Closing="WindowClosing"
    WindowStyle="ToolWindow">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="MainWindowResources.xaml" />
                <ResourceDictionary Source="Controls/BizzySpinner.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <sharedC:BooleanToHiddenVisibility x:Key="boolToVis"/>
            <sharedC:NegativeBooleanToHiddenVisibiltyConverter x:Key="negativeBoolToVis" />
            <DataTemplate x:Key="{dxt:DXTabControlThemeKey ResourceKey=BackgroundTemplate, ThemeName=Office2007Silver}">
                <Border BorderBrush="#FF828790" BorderThickness="1" Background="#E5E3E3"/>
            </DataTemplate>
            <DataTemplate x:Key="{dxt:DXTabControlThemeKey ResourceKey=BackgroundTemplate}">
                <Border BorderBrush="#FF828790" BorderThickness="1" Background="White"/>
            </DataTemplate>
            <ControlTemplate x:Key="{dxt:DXTabControlThemeKey ResourceKey=TopLayoutTemplate}" TargetType="{x:Type dx:DXTabControl}">
                <Grid>
                    <KeyboardNavigation.TabNavigation>Local</KeyboardNavigation.TabNavigation>

                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="*" />
                    </Grid.RowDefinitions>
                    <Grid Grid.Row="0" Margin="0,2,0,0" x:Name="tabHeadersPanel">
                        <KeyboardNavigation.TabIndex>1</KeyboardNavigation.TabIndex>
                        <KeyboardNavigation.DirectionalNavigation>Cycle</KeyboardNavigation.DirectionalNavigation>
                        <KeyboardNavigation.TabNavigation>Once</KeyboardNavigation.TabNavigation>
                        <Panel.ZIndex>1</Panel.ZIndex>

                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*" />
                            <ColumnDefinition Width="Auto" />
                            <ColumnDefinition Width="Auto" />
                            <ColumnDefinition Width="Auto" />
                        </Grid.ColumnDefinitions>
                        <dx:ClippedContainer Grid.Column="0" UseLayoutRounding="{TemplateBinding UseLayoutRounding}"
                                     Style="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=ClippedContainerTopLayoutStyle}}">
                            <dx:TabPanelContainer x:Name="panelContainer" Style="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=PanelContainerTopLayoutStyle}}">
                                <dx:TabPanelContainer.Resources>
                                    <Storyboard x:Key="ScrollStoryboard">
                                        <DoubleAnimation Storyboard.TargetName="ItemsPanelTranslate"
                                             Storyboard.TargetProperty="X" Duration="0:0:0.4" To="0">
                                            <DoubleAnimation.EasingFunction>
                                                <ExponentialEase EasingMode="EaseOut" Exponent="0" />
                                            </DoubleAnimation.EasingFunction>
                                        </DoubleAnimation>
                                    </Storyboard>
                                </dx:TabPanelContainer.Resources>
                                <ItemsPresenter>
                                    <ItemsPresenter.RenderTransform>
                                        <TranslateTransform x:Name="ItemsPanelTranslate" />
                                    </ItemsPresenter.RenderTransform>
                                </ItemsPresenter>
                            </dx:TabPanelContainer>
                        </dx:ClippedContainer>
                        <dx:TabControlScrollButton x:Name="PrevButton" Grid.Column="1" Style="{DynamicResource {dxt:DXTabControlThemeKey ResourceKey=PrevButtonStyle}}"
                                           Margin="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=ComponentsSpaceForHorizontalLayouts}}" />
                        <dx:TabControlScrollButton x:Name="NextButton" Grid.Column="2" Style="{DynamicResource {dxt:DXTabControlThemeKey ResourceKey=NextButtonStyle}}"
                                           Margin="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=ComponentsSpaceForHorizontalLayouts}}" />
                        <!--<dx:HeaderMenu Grid.Column="3" x:Name="HeaderMenu" IsTabStop="False" Style="{DynamicResource {dxt:DXTabControlThemeKey ResourceKey=HeaderMenuStyle}}"
                               Margin="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=ComponentsSpaceForHorizontalLayouts}}" />-->
                        <Controls:HeaderMenuForDXTabControl Grid.Column="3"
                                        x:Name="HeaderMenu"
                                        IsTabStop="False"
                                        Style="{DynamicResource {dxt:DXTabControlThemeKey ResourceKey=HeaderMenuStyle}}"
                                        Margin="{DynamicResource {dxt:DXTabControlInternalThemeKey ResourceKey=ComponentsSpaceForHorizontalLayouts}}" />
                    </Grid>
                    <Grid Grid.Row="1">
                        <dx:DXContentPresenter  ContentTemplate="{DynamicResource {dxt:DXTabControlThemeKey ResourceKey=BackgroundTemplate}}" IsTabStop="False">

                        </dx:DXContentPresenter>
                        <Grid Margin="1">
                            <dx:DXContentPresenter x:Name="contentPresenter" Margin="{TemplateBinding Padding}" UseLayoutRounding="{TemplateBinding UseLayoutRounding}"
                                       Content="{TemplateBinding SelectedItemContent}" ContentTemplate="{TemplateBinding SelectedItemContentTemplate}">

                                <KeyboardNavigation.TabNavigation>Local</KeyboardNavigation.TabNavigation>
                                <KeyboardNavigation.DirectionalNavigation>Contained</KeyboardNavigation.DirectionalNavigation>
                                <KeyboardNavigation.TabIndex>2</KeyboardNavigation.TabIndex>

                            </dx:DXContentPresenter>
                            <dx:TabControlFastRenderPanel x:Name="fastRenderPanel" Margin="{TemplateBinding Padding}" UseLayoutRounding="{TemplateBinding UseLayoutRounding}" Visibility="Collapsed">

                                <KeyboardNavigation.TabNavigation>Local</KeyboardNavigation.TabNavigation>
                                <KeyboardNavigation.DirectionalNavigation>Contained</KeyboardNavigation.DirectionalNavigation>
                                <KeyboardNavigation.TabIndex>2</KeyboardNavigation.TabIndex>

                            </dx:TabControlFastRenderPanel>
                        </Grid>
                    </Grid>
                </Grid>
            </ControlTemplate>
        </ResourceDictionary>       
    </Window.Resources>
    <Grid>
        <Grid Visibility="{Binding ShowProgress, Converter={StaticResource negativeBoolToVis}}">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" ></RowDefinition>
                <RowDefinition Height="*"></RowDefinition>               
            </Grid.RowDefinitions>           
            <Grid Grid.Row="0">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" MinHeight="65"></RowDefinition>               
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"></ColumnDefinition>
                <ColumnDefinition Width="Auto" MinWidth="2"></ColumnDefinition>              
            </Grid.ColumnDefinitions>

                <Image Grid.Row ="0" Height="37" Width="174" Margin="11,6,0,0"
                       Name="image1" Stretch="Fill" VerticalAlignment="Top"
                       HorizontalAlignment="Left"
                       Source="/MstarCommodityWPFLib;component/Resources/MorningstarLogo_Red.gif" />

                <Border  Grid.ColumnSpan="1" Grid.Row="0" HorizontalAlignment="Right" Margin="0,10,0,0"
                         Height="50" Width="400" Background="white" BorderThickness="1" BorderBrush="White"  >
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="23"/>
                            <RowDefinition Height="4"/>
                            <RowDefinition Height="23"/>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*" />
                            <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                        <ContentControl Content="{Binding Path=SearchBox}" Margin="0 0 5 0" />
                        <TextBlock Grid.Row="0" Grid.Column="1">
                        <Hyperlink Click="ShowSettings" TextDecorations="None">
                            <Image Source="{Binding ConfigImageFilePath}"  ></Image>
                        </Hyperlink>
                        </TextBlock>
                        <TextBlock Grid.Row="2" Grid.Column="1">
                        <Hyperlink Click="HelpHyperlinkClick">
                            <Image Source="{Binding HelpIconFilePath}"></Image>
                        </Hyperlink>
                        </TextBlock>
                    </Grid>
                </Border>               
            </Grid>
            <Grid Grid.Row="1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"></ColumnDefinition>
                    <ColumnDefinition Width="Auto"></ColumnDefinition>
                    <ColumnDefinition Name="columnWidth" MaxWidth="350"></ColumnDefinition>
                </Grid.ColumnDefinitions>
                <Grid x:Name="horizontalGrid">               
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" MinHeight="125"></RowDefinition>
                        <RowDefinition Height="Auto"></RowDefinition>
                        <RowDefinition Name="rowHeight" MinHeight="150"></RowDefinition>
                    </Grid.RowDefinitions>

                    <dx:DXTabControl Grid.Row="0" 
                        Margin="10 0 5 5"
                        Name="MainTabRegion" 
                        SelectedIndex="{Binding Tabs.SelectedIndex}"
                        ItemsSource="{Binding Tabs.TabItems}" 
                        DestroyContentOnTabSwitching="False" BorderThickness="5"                         
                        OverridesDefaultStyle="True">
                        <dx:DXTabControl.View>
                            <dx:TabControlScrollView
                                         ShowHeaderMenu="True" 
                                         AllowHideTabItems="True"
                                         CloseHeaderMenuOnItemSelecting="True" ShowHiddenTabItemsInHeaderMenu="True" />
                        </dx:DXTabControl.View>
                       
                        <dx:DXTabControl.ItemContainerStyle>
                            <Style TargetType="{x:Type dx:DXTabItem}">
                                <Setter Property="Visibility" Value="{Binding IsVisible, Mode=OneWay, Converter={StaticResource boolToVis}}"/>
                            </Style>
                        </dx:DXTabControl.ItemContainerStyle>
                        <dx:DXTabControl.ItemHeaderTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding Path=Header}"
                                            Visibility="{Binding IsVisible, Mode=OneWay, Converter={StaticResource boolToVis}}"
                                            OverridesDefaultStyle="True" />
                            </DataTemplate>
                        </dx:DXTabControl.ItemHeaderTemplate>
                    </dx:DXTabControl>

                    <GridSplitter  Grid.Row="1"
                      Margin="10 0 5 5"
                      HorizontalAlignment="Stretch"
                      VerticalAlignment="Stretch"             
                      ShowsPreview="true"
                      ResizeDirection="Rows"                     
                      Height="5" />
                    <Border Grid.Row="2" Margin="10 0 5 5">
                        <ContentControl Content="{Binding Path=Basket}" />
                    </Border>
                </Grid>
               
                <GridSplitter Margin="0 20 0 0" Grid.Column="1"
                  HorizontalAlignment="Stretch"
                  VerticalAlignment="Stretch"             
                  ShowsPreview="true"
                  ResizeDirection="Columns"
                  x:Name="verticalSplitter"                   
                  DragCompleted="OnDragCompleted"
                  Width="5" />               

                 <Border Grid.RowSpan="3" Grid.Column="2"  Margin="3 20 0 0">
                        <ContentControl Content="{Binding Path=ColumnDataPreview}" />
                 </Border>

            </Grid>
                   
        </Grid>
        <Grid Height="25" Width="300" Visibility="{Binding ShowProgress, Converter={StaticResource boolToVis}}">
            <ProgressBar IsIndeterminate="True" Orientation="Horizontal" />
            <Viewbox>
                <TextBlock Text="Loading ..." Padding="50 0"/>
            </Viewbox>
        </Grid>
    </Grid>
</Window>

---

Peace & Joy

Answer 1

Hi yinruhou,

It is hard to repro this blank issue by only use xaml code, could you please post a simple sample which can repro this issue here, so that we can better help you find the root cause of your issue?

You can upload the sample to skydrive and post the link here, or your can directly post code here.

Thank you.

Have a nice day.

---

Annabella Luo[MSFT]
MSDN Community Support | Feedback to us

Answer 2

thanks for reply.

I can't reproduce the issue from my side. I can build a sample project but I do not know if the issue will show up in the sample project unless I test on client's PC.  Testing on the client's PC is not directly available, I have to ask support people to ask if the client is willing to do so and if yes, schedule a webex.

A side question, how to debug on client's PC, client's PC is outside my company's intranet?

I tried remote debug but it did not work.  Please see more info @ http://stackoverflow.com/questions/12043120/how-to-debug-on-clients-pc-in-visual-studio

Thanks

---

Peace & Joy

Answer 3

Hi toosensitive,

Please check out below links about setup Remote Debuging for your reference:

http://msdn.microsoft.com/en-us/library/bt727f1t(v=vs.100).aspx

http://msdn.microsoft.com/en-us/library/y7f5zaaa(v=vs.100).aspx

http://www.codeproject.com/Articles/146838/Remote-debugging-with-Visual-Studio-2010

Hope it helps.

Have a nice day.

---

Annabella Luo[MSFT]
MSDN Community Support | Feedback to us