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Exception when touching MaskedInput control

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MaskedInput (Numeric, DateTime, Text, Currency)

This is a migrated thread and some comments may be shown as answers.

Mike asked on 06 Aug 2014, 12:23 PM

Hi,

We have recently updated our Telerik controls for one of our applications. The current version used is 2014.1.0224.40. What we noticed on touch devices is that exceptions are being raised when the MaskedInput control is being touched. There is no exception raised when the control is being clicked.

The exception is:
,. hexadecimal value 0x00, is an invalid character

The stacktrace:
   bij System.Xml.XmlEncodedRawTextWriter.InvalidXmlChar(Int32 ch, Char* pDst, Boolean entitize)
   bij System.Xml.XmlEncodedRawTextWriter.WriteAttributeTextBlock(Char* pSrc, Char* pSrcEnd)
   bij System.Xml.XmlEncodedRawTextWriter.WriteString(String text)
   bij System.Xml.XmlWellFormedWriter.WriteString(String text)
   bij Telerik.Windows.Automation.Peers.AutomationXmlSerializer.Serialize(IEnumerable`1 properties)
   bij Telerik.Windows.Automation.Peers.RadMaskedInputBaseAutomationPeer.GetItemStatusCore()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   bij System.Windows.ContextLayoutManager.fireAutomationEvents()
   bij System.Windows.ContextLayoutManager.UpdateLayout()
   bij System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   bij System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
   bij System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   bij System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   bij System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   bij System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   bij MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

When performing remote debugging sessions, we could not find the reason for this problem.

Is this a bug or did we make a mistake ?

Kind regards,
Mike Overmeijer

6 Answers, 1 is accepted

Accepted

answered on 12 Aug 2014, 02:03 PM

wpfvisualizer.png

Hi Petar,

I upgrade to the project with the Q2 2014 release. I'm not able to tell you right now whether it fixes the issue, as another issue appeared after the upgrade. The issue is about the height of the RadBusyIndicator. According to the XAML of the Window, the busy indicator contains a grid. But when we check the WPF visualizer, the busy indicator does not contain any content.

The XAML:

<Window x:Class="com.ideo.mqm.MQM_Win32.View.FormLogin"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:lex="http://wpflocalizeextension.codeplex.com"

xmlns:v="clr-namespace:com.ideo.mqm.MQM_Win32.View"

xmlns:viewHelper="clr-namespace:com.ideo.mqm.MQM_Win32.View.Helper"

Title="MQM"

ResizeMode="NoResize"

SizeToContent="WidthAndHeight"

WindowStartupLocation="CenterScreen"

WindowStyle="None"

BorderThickness="1"

BorderBrush="CadetBlue"

VerticalAlignment="Top"

Loaded="Window_Loaded">

<Window.Resources>

<telerik:BooleanToVisibilityConverter x:Key="booleanToVisibilityConverter" />

</Window.Resources>

<ScrollViewer VerticalScrollBarVisibility="Auto"

PanningMode="VerticalOnly"

CanContentScroll="False"

PanningDeceleration="1000"

PanningRatio="2">

<Grid VerticalAlignment="Top"

HorizontalAlignment="Left">

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

<RowDefinition Height="10" />

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<Image x:Name="image"

Source="../images/productBig.JPG"

HorizontalAlignment="Left"

VerticalAlignment="Top"

Width="600" />

<Grid Grid.Row="2"

Margin="10,0,10,0"

VerticalAlignment="Top">

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

<RowDefinition Height="10" />

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<v:UCMainTitleBar Title="{lex:LocText Key=LOGIN_TITLE, Dict=Resources, Assembly=MQM_Win32Resources}" />

<Grid x:Name="gridLogin"

Grid.Row="2">

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<telerik:RadBusyIndicator Grid.Row="0"

BusyContent="{Binding Path=BusyMessage, Mode=OneWay}"

IsBusy="{Binding Path=IsBusyIndicatorVisible, Mode=OneWay}"

IsEnabled="{Binding Path=IsBusyIndicatorEnabled, Mode=OneWay}"

IsIndeterminate="{Binding Path=IsBusyIndicatorIndeterminate, Mode=OneWay}"

ProgressValue="{Binding Path=BusyIndicatorProgressValue, Mode=OneWay}"

TabIndex="-1">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="0.25*" />

<ColumnDefinition Width="300" />

<ColumnDefinition Width="0.25*" />

</Grid.ColumnDefinitions>

<Label Grid.Row="0"

Grid.Column="0"

Content="{lex:LocText Key=LOGIN_USERNAME, Dict=Resources, Assembly=MQM_Win32Resources}" />

<telerik:RadMaskedTextInput x:Name="tbUsername"

AcceptsReturn="False"

Grid.Row="0"

Grid.Column="1"

IsClearButtonVisible="False"

Margin="5,5,5,5"

Width="250"

Mask=""

Placeholder=""

EmptyContent="{lex:LocText Key=LOGIN_USERNAME_EMPTY, Dict=Resources, Assembly=MQM_Win32Resources}"

VerticalAlignment="Bottom"

HorizontalAlignment="Center"

TabIndex="1"

SectionsNavigationMode="None"

Text="{Binding Path=Username, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

TextMode="PlainText" />

<Label Grid.Row="1"

Grid.Column="0"

Content="{lex:LocText Key=LOGIN_PASSWORD, Dict=Resources, Assembly=MQM_Win32Resources}" />

<PasswordBox x:Name="tbPassword"

GotFocus="PasswordBoxGotFocus"

Grid.Row="1"

Grid.Column="1"

HorizontalAlignment="Center"

Margin="5"

HorizontalContentAlignment="Left"

VerticalContentAlignment="Center"

TabIndex="2"

viewHelper:PasswordBoxAssistant.BindPassword="true"

viewHelper:PasswordBoxAssistant.BoundPassword="{Binding Path=Password, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

Width="250" />

</Grid>

</telerik:RadBusyIndicator>

<Grid Grid.Row="1">

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

<RowDefinition Height="Auto"

MinHeight="22" />

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="0.25*" />

<ColumnDefinition Width="300" />

<ColumnDefinition Width="0.25*" />

</Grid.ColumnDefinitions>

<TextBlock Grid.Column="1"

Grid.Row="0"

Foreground="Red"

HorizontalAlignment="Center"

Margin="0,5,0,5"

Text="{Binding Path=Message, Mode=OneWay}"

Visibility="{Binding MessageVisible, Mode=OneWay}" />

<StackPanel Orientation="Horizontal"

Grid.Row="1"

Grid.Column="1"

HorizontalAlignment="Center"

Margin="0,10">

<telerik:RadSplitButton x:Name="btnLogin"

Content="{Binding Path=SelectedAction.Name, Mode=TwoWay}"

Click="BtnLoginClick"

MinWidth="80"

HorizontalAlignment="Right"

TabIndex="9"

DropDownIndicatorVisibility="{Binding Path=IsSubscribed, Mode=OneWay, Converter={StaticResource booleanToVisibilityConverter}}"

IsEnabled="{Binding Path=LoginButtonEnabled, Mode=OneWay}">

<telerik:RadSplitButton.DropDownContent>

<ListBox BorderThickness="1"

ItemsSource="{Binding Path=LoginActionList, Mode=OneTime}"

SelectionChanged="SelectedActionChanged"

DisplayMemberPath="Name"

SelectedValuePath="Code">

<ListBox.ItemsPanel>

<ItemsPanelTemplate>

<telerik:RadWrapPanel Width="180"

Orientation="Vertical"

IsAnimated="True" />

</ItemsPanelTemplate>

</ListBox.ItemsPanel>

</ListBox>

</telerik:RadSplitButton.DropDownContent>

</telerik:RadSplitButton>

<telerik:RadButton Name="btnExit"

Click="ButtonExitClick"

Width="80"

HorizontalAlignment="Right"

TabIndex="10"

Content="{lex:LocText Key=LOGIN_EXIT, Dict=Resources, Assembly=MQM_Win32Resources}"

Margin="10,0,0,0" />

</StackPanel>

</Grid>

</ScrollViewer>

</Window>

Is this another bug?

Kind regards,
Mike

answered on 14 Aug 2014, 08:55 AM

2014-08-13-145936.png

Hello Mike,

We are not aware of such an issue with the BusyIndicator. However I tested the explained scenario and was able to see the content of the BusyIndicator in the WPF visualizer. However the issue might be that you are checking it before it has loaded its content. Please try the same in the Loaded event handler of the BusyIndicator.

Hope this helps.

Regards,
Kalin
Telerik

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Accepted

answered on 20 Aug 2014, 12:42 PM

2014-08-20-1535.zip

Hello Mike,

I tried using the same elements you have inside of the BusyIndicator in the provided sample code, but couldn't reproduce the described issue. I'm attaching a video of my test. What I can suggest you would be try to remove as many elements as possible from the same Window (BusyIndicator bound properties as well) until you have a few element and still be able to reproduce the issue. The you can provide us with the code and sample steps if needed, so we can reproduce it on our side and give you a possible solution of the problem.

I'm looking forward to hearing from you.

Regards,
Kalin
Telerik

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Exception when touching MaskedInput control

6 Answers, 1 is accepted