Report a Silverlight Bug

DataForm: Problem Binding to nested objects

Leonid Andruhin — Mon, 20 Jul 2009 11:33:17 GMT

Hi, I've got a problem using DataForm. When binding to nested object and setting CommandButtonsVisibility to "Commit,Cancel", the commit button is always Disabled when changing SubEntity, and becomes Enabled when changing some property of entity. Both, entity and subentity realise INotifipropertyChanged event. I can send sample which demonstrates this issue.

BaseEntity:

using System.ComponentModel;

namespace DataFormTest

{

public abstract class BaseEntity : INotifyPropertyChanged

{

protected void OnPropertyChanged(string sPropertyName)

{

if (PropertyChanged != null)

PropertyChanged(this, new PropertyChangedEventArgs(sPropertyName));

}

#region INotifyPropertyChanged Members

public event PropertyChangedEventHandler PropertyChanged;

#endregion

}

Here is SubEntity

namespace DataFormTest

{

public class SubEntity : BaseEntity

{

private string _sProperty;public string sProperty

{

get

{

return _sProperty;

}

set

{

if (_sProperty == value)

return;

_sProperty = value;base.OnPropertyChanged("sProperty");

}

MainEntity:

using System.ComponentModel;

using System.Windows;

namespace DataFormTest

{

public class Entity : BaseEntity, IEditableObject

{

private string _sMainProperty;public string sMainProperty

{

get

{

return _sMainProperty;

}

set

{

if (_sMainProperty == value)

return;

_sMainProperty = value;base.OnPropertyChanged("sMainProperty");

}

private SubEntity _oSubEntity;public SubEntity oSubEntity

{

get

{

return _oSubEntity;

}

set

{

if (_oSubEntity == value)

return;

_oSubEntity = value;base.OnPropertyChanged("oSubEntity");

}

#region IEditableObject Memberspublic void BeginEdit()

{

MessageBox.Show("BeginEdit");

}

public void CancelEdit()

{

MessageBox.Show("CancelEdit");

}

public void EndEdit()

{

MessageBox.Show("EndEdit");

}

#endregion

}

MainPage.Xaml:

<UserControl xmlns:dataFormToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit" x:Class="DataFormTest.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" d:DesignWidth="640" d:DesignHeight="480">

<dataFormToolkit:DataForm CurrentItem="{Binding}" CommandButtonsVisibility="Commit,Cancel">

<dataFormToolkit:DataForm.EditTemplate>

<dataFormToolkit:DataField>

</dataFormToolkit:DataField>

<dataFormToolkit:DataField>

</dataFormToolkit:DataField>

</StackPanel>

</DataTemplate>

</dataFormToolkit:DataForm.EditTemplate>

</dataFormToolkit:DataForm>

</Grid>

</UserControl>

and finally change app.startup:

private void Application_Startup(object sender, StartupEventArgs e)

{

Entity oEntity = new Entity();MainPage mp = new MainPage();

mp.DataContext = oEntity;

this.RootVisual = mp;

}

Sometimes images dont show up, most of the time they do, SL3+Windows 7 + IE8

darwaish — Sun, 29 Nov 2009 01:07:12 GMT

I am adding images to a stack panel at runtime. Most of the times images show up right, but every now and then they dont show up at all. If they dont show up, I need to do a couple of refreshs in the browser to get them appear. I had the same issue in Chrome, but I did not worry it because of Chrome's market share and since it not officially supported for SL3. But I now I have same problem on IE8 + Windows 7. I did not have this problem when I was on Vista. Just switched to Windows 7 and since then having this problem. So I am not sure if it is Windows 7 thing? Anyone else have seen this problem? Interestingly I am unable to reproduce it on Firefox. It seems to be only IE8 and Chrome that have problem. Below is how I add images to a stack panel. Am I doing anything wrong here? Image image = new Image(); Uri uri = new Uri(this.imagesPath + iName, UriKind.RelativeOrAbsolute); ImageSource img = new System.Windows.Media.Imaging.BitmapImage(uri); image.SetValue(Image.SourceProperty, img); image.Stretch = Stretch.Uniform; spPages.Children.Add(image);

RTL character issue in Silverlight 4

h_eskandari — Mon, 23 Nov 2009 08:51:51 GMT

When typing a persian sentense in Silverlight 4, comparing to other Microsoft applications and even non-microsoft applications, a specific character is generated wrong.

Sentence in persian ending with "Arabic Letter Yeh" character (U+064A) , should end with "Arabic Letter Alef Maksura" (U+649) instead. This is the behavior in all applications in Microsoft Windows using "Farsi" (FA) keyboard, but in silverlight you always get U+064A character regardless of the placement of the character in the word.

This may sound as a small problem, but this little conflict will affect all the way application works. Suppose a user inputs a search string in a Silverlight application and submitting it to a SQL server database for a search. Due to inconsistencies over the ending "Yeh" characters, the search result would not work as expected.

Environment.NewLine = "\r\n" should it not be "\r"?

ericsson007 — Sat, 28 Nov 2009 00:35:17 GMT

When entering text in a TextBox each new line is represented as "\r" so I would expect Environment.NewLine to be the same. One of problems is that when you prepopulate the text in the text box in the code behind and use Environment.NewLine the line separator ends up being different from when the user enters data so you end up with 2 different representations of new lines which can cause a problem when you want to transform or compare the text.

Possible Bug: DataForm and ComboBox

Maca007 — Tue, 01 Sep 2009 22:42:49 GMT

I'm developing a Silverlight 3 application using RIA services/ POCO and have come across something that maybe a bug with DataForm and ComboBox. I have a DataForm that displays some basic information about a claim. One of the fields (called status) needs to be a combo box so that the users can easily make changes. What I have found is that the combo box will default (that is, ignore the actual value and instead display the first item in the list) for the first 2 items in the DataForm list. If I re-order the list so that it is descending then again the first 2 DataForm items display the default item. The re-ordering seems to prove that my lists are setup correctly and that it is the DataForm that has the problem.

Have anyone else experienced this? I’ve searched the forum for information but no one seems to have a similar issue.

MainPage.xaml:

    <Grid x:Name="LayoutRoot">
        <Grid.Resources>
            <App:BrokerPlusDomainContext x:Key="brokerPlusDomainContext" />
        </Grid.Resources>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Button x:Name="saveButton"
                Content="Save"
                HorizontalAlignment="Left"
                Margin="4" />
        <riaControls:DomainDataSource x:Name="claimsDataSource"
                                      QueryName="GetClaimsQuery"
                                      AutoLoad="True"
                                      DomainContext="{Binding Source={StaticResource brokerPlusDomainContext}}"/>
        <dataFormToolkit:DataForm x:Name="claimsDataForm"
                                  AutoEdit="True"
                                  AutoCommit="True"
                                  AutoGenerateFields="False"
                                  CommandButtonsVisibility="Navigation"
                                  ItemsSource="{Binding Data, ElementName=claimsDataSource}"
                                  Grid.Row="1">
            <dataFormToolkit:DataForm.EditTemplate>
                <DataTemplate>
                    <StackPanel>
                        <dataFormToolkit:DataField Label="Claim Id">
                            <TextBox Text="{Binding cla_id, Mode=TwoWay}" />
                        </dataFormToolkit:DataField>
                        <dataFormToolkit:DataField Label="Claim Description">
                            <TextBox Text="{Binding cla_brief_description, Mode=TwoWay}" />
                        </dataFormToolkit:DataField>
                        <dataFormToolkit:DataField Label="Claim Status" x:Name="field">
                            <Grid>
                                <riaControls:DomainDataSource x:Name="claimStatusDataSource"
                                                              QueryName="GetClaimStatusTypesQuery"
                                                              AutoLoad="True"  
                                                              DomainContext="{Binding Source={StaticResource brokerPlusDomainContext}}" />
                                <ComboBox 
                                    x:Name="cmbStatus"
                                    ItemsSource="{Binding Data, ElementName=claimStatusDataSource}"
                                    SelectedItem="{Binding ClaimStatus, Mode=TwoWay}"
                                    DisplayMemberPath="clastaty_name"/>
                            </Grid>
                        </dataFormToolkit:DataField>
                    </StackPanel>
                </DataTemplate>
            </dataFormToolkit:DataForm.EditTemplate>
        </dataFormToolkit:DataForm>
    </Grid>

Domain Service:

    [EnableClientAccess()]
    public class BrokerPlusDomainService : DomainService
    {
        List StatusTypes = new List()
        {
            new clsClaimStatusTypes{clastaty_id=1, clastaty_name="Status 1"},
            new clsClaimStatusTypes{clastaty_id=2, clastaty_name="Status 2"},
            new clsClaimStatusTypes{clastaty_id=3, clastaty_name="Status 3"}
        };

        List Claims = new List()
        {
            new clsClaim{cla_id=1, cla_brief_description="1", cla_status=3},
            new clsClaim{cla_id=2, cla_brief_description="2", cla_status=1},
            new clsClaim{cla_id=3, cla_brief_description="3", cla_status=2},
            new clsClaim{cla_id=4, cla_brief_description="4", cla_status=3},
            new clsClaim{cla_id=5, cla_brief_description="5", cla_status=2}
        };

        public IQueryable GetClaims()
        {
            return Claims.ToList().OrderByDescending(claim => claim.cla_id).AsQueryable();
        }

        public IQueryable GetClaim(int nClaimId)
        {
            return Claims.Where(claim => claim.cla_id == nClaimId).AsQueryable();
        }

        public void UpdateClaim(clsClaim newClaim)
        {
            //
        }

        public void InsertClaim(clsClaim objClaim)
        {
            Claims.Add(objClaim);
        }

        public IQueryable GetClaimStatusTypes()
        {
            return StatusTypes.AsQueryable();
        }
        public IQueryable GetClaimStatusType(int nClaimStatusId)
        {
            return StatusTypes.Where(status => status.clastaty_id == nClaimStatusId).AsQueryable();
        }

        public void UpdateClaimStatusTypes(clsClaimStatusTypes objClaimStatus)
        {
            //
        }

        public void InsertClaimStatusTypes(clsClaimStatusTypes objClaimStatus)
        {
            StatusTypes.Add(objClaimStatus);
        }

POCO Classes:

    public class clsClaim : clsBusinessObject
    {
        private int _cla_id = -1;

        [Key]
        [clsDBField("cla_id", clsDBField.DBFlags.PrimaryKey)]
        public int cla_id
        {
            get { return _cla_id; }
            set { _cla_id = value; }
        }

        private string _cla_brief_description = "";
        
        [clsDBField("cla_brief_description")]
        public string cla_brief_description
        {
            get { return _cla_brief_description; }
            set { _cla_brief_description = value; }
        }

        private int _cla_status = -1;

        [clsDBField("cla_status")]
        public int cla_status
        {
            get { return _cla_status; }
            set { _cla_status = value; }
        }

        [Association("Claim_ClaimStatus", "cla_status", "clastaty_id", IsForeignKey = true)]
        [Include]
        public clsClaimStatusTypes ClaimStatus { get; set; }
    }

    public class clsClaimStatusTypes : clsBusinessObject 
    {
        private int _clastaty_id = -1;

        [Key]
        [clsDBField("clastaty_id", clsDBField.DBFlags.PrimaryKey)]
        public int clastaty_id
        {
            get { return _clastaty_id; }
            set { _clastaty_id = value; }
        }

        private string _clastaty_name = "";
        [clsDBField("clastaty_name")]
        public string clastaty_name
        {
            get { return _clastaty_name; }
            set { _clastaty_name = value; }
        }

        public override string ToString()
        {
            return _clastaty_name; 
        }

        [Association("Claim_ClaimStatus", "clastaty_id", "cla_status")]
        [Include]
        public List Claims { get; set; }
    }

Silverlight Image Binding With C#

maheshsourceedge — Fri, 27 Nov 2009 10:53:11 GMT

With Silverlight 3

I am trying to bind Image control from the Class which has ImageSource property in it. It complies and runs successfully with NO IMAGE

SHOWN ON image control.

Here i have Pasted by Code.

XAML

</ScrollViewer>

C# Code

if (lstboxImages.SelectedItem != null)

{

imageContent.DataContext = (lstboxImages.SelectedItem as EmapImageHelper);

}

By wathing EmapImageHelper Class I have all the properties filled including ImageFile which i binded to ImageControl as i shown.

But i am not able to see the image on the Image control by Doing so.

I tried without Binding Also by directly setting the Source property of the Image Control still no answer.

Is this a bug in silverlight Or what is the possible solution.

ANYONE HEARING ME CRYING :(

TextBox VerticalScrollBarVisibility databinding not supported?

ericsson007 — Fri, 27 Nov 2009 17:41:20 GMT

I'm gather that the VerticalScrollBarVisibility and the HorizontalScrollBarVisibility properties on the TextBox are not DependencyProperties and therefor cannot be data bound. Are there are any plans to change (fix) that? I'm using version 3.0.30604.2245 of the System.Windows.Controls dll.

Realtime data synchronization to bind data in datagrid

JoniFranc — Wed, 11 Jun 2008 06:57:44 GMT

I have a datagrid in .xaml file bind with data. now i need to refresh my grid if and only if there is new row added in database without postback, without page refresh, without using any ajax control in silverlightThan

Firefox and windowlessmode=true

meykih — Fri, 27 Nov 2009 08:45:11 GMT

Hello,

I'm using my silverlight 3 application inside an asxp page and with browser scrolling. If I set windowlessmode to true everything is fine in IE8 but in Firefox 3.5.5 the mouse is not detected correctly. If I scroll down my page I do not get access to controls (even mouseover-style is not shown) because the mouse seems to think that nothing is scrolled. Let's say my app is at top of the page, I scroll down 100px and position my mouse 200px below the upper border of my browser view. So I am at 300px in my app but mouse thinks I am at 200px.

I found some threads in forums on this side written more than one year ago that this issue was already detected in silverlight 1. But nothing is fixed in silverlight 3, how can that be?

Silverlight seems to repeat some frames

gman1108 — Tue, 24 Nov 2009 02:24:17 GMT

I'm running Windows 7 and have a Compaq Presario SR1920NX. Windows 7 was a clean install. When I play any video that uses Silverlight it seems to repeat some frames which gives it like an echoe effect. The video also shows it repeating a frame. So I know its not the audio effects that silverlight has. I have no problems playing video from youtube or any other Java based video. When I had XP on my machine it worked fine. Any solutions would be helpful, cant watch netflix

Unable to scale UIElements above int16.Max

Ronileco — Mon, 05 Oct 2009 14:02:59 GMT

Hi,

i was wondering if this is a known issue or is it me doing some thing wrong.

for this example lets say i have a rectangle with width and height of 100.

if i scale it by 330 then the rectangle disappears. so are Canvas and Grids, etc'.

is this the maximum size of all UIElements?

what is the silverlight internal limitations for UIElements size (ActualWidth / ActualHeight ) - Short, Int, Long?

Thanks in advance and keep up the good work.

Roni Cohen Aharon.

Image, BitmapImage, AG_E_NETWORKERROR

copman — Thu, 26 Nov 2009 15:31:34 GMT

If using many images and/or large images sooner or later the loading will fail.
I guess it has something to do with memory, because if not using bitmapimage but WebClient an
'Out Of Memory' Exception occured.

What is the best way to handle large amount of images?
How is is possible to release memory occupied by Images?

Thanks in advance!

Resources, ObservableCollection

jbeerATkern.ch — Thu, 26 Nov 2009 15:56:36 GMT

Hi, I've got a collection and collection item class: public class NameValueCollection : ObservableCollection { } public class NameValuePair { public string Name { get; set; } public string Value { get; set; } } Now, if I want to use it in XAML everything works fine, until the Name property is set to a value which violates the rules for identifiers (c#): ...XAML code ... this leads to a compiler error: Error 1 '!! Invalid Identifier' is not a valid value for Name ... If in XAML the Name property is set to e.g. "Hello", this leads to generated code XYPage.g.cs: ... public void InitializeComponent() { if (_contentLoaded) { return; } _contentLoaded = true; System.Windows.Application.LoadComponent(this, new System.Uri("/TestProject;component/XYPage.xaml", System.UriKind.Relative)); this.LayoutRoot = ((System.Windows.Controls.Grid)(this.FindName("LayoutRoot"))); this.Hello = ((Utils.NameValuePair)(this.FindName("Hello"))); ... I guess this is a bug!? Regards Joe generated code: ... ...

SL4 WebBrowser does not run javascript properly

nyhetsgrupper@gmail.com — Tue, 24 Nov 2009 07:34:37 GMT

I use the new WebBrowser control to load the following html:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Some sample HTML page</title>
        <script type="text/javascript">
            function ShowAlert() {
                alert('Hello from Javascript');
            }
</script>
</head>
<body onload="ShowAlert()">
    <div style="float:left;width:300px;height:100px;background:red;color:White">This should be left</div>
        <div style="float:right;width:300px;height:100px;background:Green;color:White">This should be right</div>
        <div id="myDiv">noe tekst</div>
</body>
</html>

It loads correctly, but it does not show the "Hello from Javascript" alert (called from body onload). Why? I have also tried to invoke the ShowAlert method using the WebBrowser.InvokeScript method, but with the same result. The javascript method is called, but the alert box is not showing.

Bug: Value does not fall within the expected range

Patrick8639 — Wed, 14 Jan 2009 09:30:10 GMT

Hello,

Often, when we remove a control in the user interface, an exception is generated and the plug-in displays the WSOD.

Here is an example exception tracing:

Erreur : Unhandled Error in Silverlight 2 Application
Code: 4004
Category: ManagedRuntimeError
Message: System.ArgumentException: Value does not fall within the expected range.
   at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
   at MS.Internal.XcpImports.MethodPack(IntPtr objectPtr, String methodName, Object[] rawData)
   at MS.Internal.XcpImports.MouseEventArgs_GetPosition(MouseEventArgs args, UIElement relativeTo)
   at System.Windows.Input.MouseEventArgs.GetPosition(UIElement relativeTo)
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseMove(MouseEventArgs e)
   at System.Windows.Controls.Control.OnMouseMove(Control ctrl, EventArgs e)
   at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)

Fichier Source : http://localhost/.../TestPage.html
Ligne : 52

The exception is raised when I click on a button in a "dialog box" that closes the "dialog box".

As you can see, the error is not in the user code but in the plug-in only, so there is no simple way to catch it.

Making a search in the forum, I can see that many people have the same problem.

When will this bug be corrected?

Patrick

Runtime error when using URI syntax for xml ns mapping.

andrews_09 — Mon, 23 Nov 2009 13:32:16 GMT

In both the SL and WPF frameworks, the xmlnsprefix and xmlnsdefinition attributes are defined. For both attributes on both platforms you may use a uri syntax for the xmlnamespace (e.g. "http://mycompany.com/myproduct"). When you use this xml namespace in your xmlns mappings in a page and use the control, the compiler is able to correctly locate and identify the source clr namespace that contains the control (and if you incorrectly type the mapping you correctly get a compiler error that the xml namespace is not recognized). However even when you have entered it correctly and it compiles fine, when you go to run the project you get a XamlParseException at runtime error with a message about an "Unknown namespace http://mycompany.com/myproduct". Since this works for WPF, works with the intrinsic SL elements, and works with SL at compile time this seems like a bug. I really don't want to use the "clr-namespace:;assembly=" convention since I want to be able to keep the xaml the same even if I change the name of the assembly (e.g. for a new release) or if I wanted to share xaml between wpf/sl versions of a product.

Silverlight (Safari Internet plug-in) quit unexpectedly

huashi — Mon, 23 Nov 2009 17:14:11 GMT

I'm not sure if this is the right place to report this. I've got Silverlight plug-in quit in Safari 4.0.3 on Mac OS X 10.6 machine. Below is the report generated by Safari: Process: WebKitPluginHost [420] Path: /System/Library/Frameworks/WebKit.framework/WebKitPluginHost.app/Contents/MacOS/WebKitPluginHost Identifier: com.apple.WebKit.PluginHost Version: 6531 (6531.4) Build Info: WebKitPluginHost-65310400~1 Code Type: X86 (Native) Parent Process: WebKitPluginAgent [418] PlugIn Path: /Library/Internet Plug-Ins/Silverlight.plugin/Contents/MacOS/agcore PlugIn Identifier: com.microsoft.SilverlightPlugin PlugIn Version: 3.0.40624.0 (3.0.40624.0) Date/Time: 2009-10-28 15:26:38.294 +0530 OS Version: Mac OS X 10.6 (10A432) Report Version: 6 Interval Since Last Report: 31316 sec Crashes Since Last Report: 5 Per-App Interval Since Last Report: 15223 sec Per-App Crashes Since Last Report: 5 Anonymous UUID: DB603976-8C16-46E9-B059-675F8702DA91 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000038 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 com.apple.WebKit.PluginHost 0x0000a102 0x1000 + 37122 1 ...microsoft.SilverlightPlugin 0x12bda528 wcscat + 1112 2 ...microsoft.SilverlightPlugin 0x12b8e295 ippiDCTQuantInv8x8LS_JPEG_16s8u_C1R_SSE + 8213 3 ...microsoft.SilverlightPlugin 0x12b8ebe4 ippiDCTQuantInv8x8LS_JPEG_16s8u_C1R_SSE + 10596 4 ...microsoft.SilverlightPlugin 0x12be3e1a wcscat + 40266 5 ...microsoft.SilverlightPlugin 0x12b8d147 ippiDCTQuantInv8x8LS_JPEG_16s8u_C1R_SSE + 3783 6 ...microsoft.SilverlightPlugin 0x1255d8d0 0x12559000 + 18640 7 ...microsoft.SilverlightPlugin 0x12bdef50 wcscat + 20096 8 ...microsoft.SilverlightPlugin 0x12bd8148 PackagingCrc32 + 13528 9 ...microsoft.SilverlightPlugin 0x12a53597 BitmapSource_SetSource + 199255 10 ...microsoft.SilverlightPlugin 0x12a54689 BitmapSource_SetSource + 203593 11 com.apple.CoreFoundation 0x95441b02 __CFRunLoopDoObservers + 1186 12 com.apple.CoreFoundation 0x953fe65d __CFRunLoopRun + 557 13 com.apple.CoreFoundation 0x953fdd34 CFRunLoopRunSpecific + 452 14 com.apple.CoreFoundation 0x953fdb61 CFRunLoopRunInMode + 97 15 com.apple.HIToolbox 0x92b84fec RunCurrentEventLoopInMode + 392 16 com.apple.HIToolbox 0x92b84da3 ReceiveNextEventCommon + 354 17 com.apple.HIToolbox 0x92b84c28 BlockUntilNextEventMatchingListInMode + 81 18 com.apple.AppKit 0x96d9eb99 _DPSNextEvent + 847 19 com.apple.AppKit 0x96d9e40e -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 156 20 com.apple.AppKit 0x96d605fb -[NSApplication run] + 821 21 com.apple.WebKit.PluginHost 0x00006a09 0x1000 + 23049 22 com.apple.WebKit.PluginHost 0x00002845 0x1000 + 6213 ................

Error HRESULT E_FAIL has been returned from a call to a COM component.

Revathi Kota — Wed, 25 Nov 2009 07:02:35 GMT

I want to merge resource dictionary file...

I tried the following code..

Uri uri = new Uri(String.Format("Assets/Themes/{0}", ((ComboBoxItem)cmbThemes.SelectedItem).Tag.ToString()), UriKind.Relative);

            ResourceDictionary rd = new ResourceDictionary();
            rd.Source = uri;

            this.Resources.MergedDictionaries.Add(rd);
            System.Windows.Style rctStyle = rd["rect"] as Style;
            rct.Style = rctStyle;

but i am getting the exception "Error HRESULT E_FAIL has been returned from a call to a COM component"

can anyone help me to solve this issue...

"Reduce XAP size ..." && Splash Screen && IE --> Blank Screen

alexander.biskop — Tue, 24 Nov 2009 15:22:01 GMT

Hi there,

my team and I found a strange bug today.

We have a Web project containing an HTML page which embeds a Silverlight 3 application (through an <object> tag). The Silverlight app references System.Windows.Controls.Toolkit and uses the System.Windows.Controls namespace (e.g. GlobalCalendar control).

Nothing fancy; we even set up a simple dummy page/app to reproduce the behaviour.

Now, if

- the "Reduce XAP size by using application library caching" option is checked in the properties page of the SL app

AND

- the HTML page references a splash screen (e.g. SplashScreen.xaml, located in the Web project root, contains only a simple TextBlock)

AND

- Internet Explorer (8) is used to view the page

we get a blank/white screen in about 1 out of 10 attempts to view the page. Debugging the app didn't show any exceptions. All of the above conditions need to be met; if at least one condition is altered (i.e. "Reduce XAP size..." option disabled or splash screen disabled or Firefox used to view the page), everything works fine.

Weird, huh?

Cheers,

Alex

The remote server returned an error: NotFound.

Tad_Bojanowski — Tue, 10 Nov 2009 20:57:59 GMT

Since the other thred is answered http://forums.silverlight.net/forums/t/136918.aspx and I'm still having problems with it.

I reposted this question :

Hi, I'm having same problem with the service. Except this did not solve my problem I inserted this in:

</behavior>

My service passes very large data in to Silverlight appication but then I pass subset of it back to service it works only when the set is relatively small. I don't understand why its not bidirectionaly equal. Since I can recive very large data, why can't I send large data back to the service? How do I get around that?

CaretBrush - 'blinking' all text using same brush.

RGEINC — Sun, 22 Nov 2009 03:01:13 GMT

When setting the CaretBrush of a TextBox to a brush style, any other text that uses that style resource will blink with the textblock caret.

Here is a sample. When you click in the textbox, the sample textblock and button text flash with the caret.

VS2008/SP1, .NET 3.5 SP1, Silverlight 3

<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"
             x:Class="TestingSL.MainPage"
             d:DesignWidth="640"
             d:DesignHeight="480">

    <UserControl.Resources>
        <Color x:Key="DarkTextColor">#FF000000</Color>

        <SolidColorBrush x:Key="DarkTextBrush"
                         Color="{StaticResource DarkTextColor}"></SolidColorBrush>

    </UserControl.Resources>
    <Grid x:Name="LayoutRoot"
          HorizontalAlignment="Stretch"
          VerticalAlignment="Stretch">

        <TextBlock HorizontalAlignment="Left"
                   VerticalAlignment="Top"
                   Foreground="{StaticResource DarkTextBrush}"
                   Text="DarkText Here" />

        <Button  HorizontalAlignment="Left"
                   VerticalAlignment="Center"
                   Foreground="{StaticResource DarkTextBrush}"
                   Content="DarkText Here" />

        <TextBox Background="White"
                 Foreground="{StaticResource DarkTextBrush}"
                 CaretBrush="{StaticResource DarkTextBrush}" 
                 HorizontalAlignment="Center"
                 VerticalAlignment="Center"
                 Text="Click in Here"
                 Width="200"/>
        
    </Grid>
    
</UserControl>

DataGrid's Horizontal Scrollbar Throws Exception

luisvegas — Thu, 19 Nov 2009 23:46:04 GMT

I had some trouble replicating this error in a basic case but is pretty consistent and a SHOW Stopper.

This is the scenario.

I have a DataGrid where the number of columns are greater than the size of the grid (i.e. it has horizontal scroll bars)

when scrolling horizontally the application crashes and gives the following error

_____________________________________________________________________________________

Error: Unhandled Error in Silverlight Application
Code: 4004
Category: ManagedRuntimeError
Message: System.ArgumentException:
Parameter name: width
   at System.Windows.Rect..ctor(Double x, Double y, Double width, Double height)
   at System.Windows.Controls.Primitives.DataGridCellsPresenter.EnsureCellClip(DataGridCell cell, Double width, Double height, Double frozenLeftEdge, Double cellLeftEdge)
   at System.Windows.Controls.Primitives.DataGridCellsPresenter.ArrangeOverride(Size finalSize)
   at System.Windows.FrameworkElement.ArrangeOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
   Source File: http://<FILENAME>.aspx
Line: 56

_____________________________________________________________________________________

Is happening Every time.

Silverlight Toolkit BusyIndicator issue

Leonid Andruhin — Sun, 22 Nov 2009 15:52:17 GMT

Hi, I'm using november release of SL Toolkit and I've got problems using BusyIndicator.

When showing DataForm wrapped by BusyIndicator in ChildWindow, BusyIndicator works fine, when it becomes busy, but when it becomes not busy - the DataForm stays Disabled and becomes enabled only when user clicks on it (I think when it gets focus). Another Controls work fine.

Another problem - BusyIndicator don't workes when Content and ContentTemplate changed at runtime. For example, if I put BusyIndicator on main control, created DependencyProperty which helpes me to catch ContextChanged event. Context property is bound to Current view model, IsBusy property is bound to current view model's IsBusy property. When I change current view model, ContextChanged fires and in handle I change ContentTemplate property of BusyIndicator. But when property to whitch IsBusy property was bound changes - the BusyIndicator's BusyTemplate doesn't appeares.

long,int64 DependencyProperty bug?

tonyedmo — Wed, 18 Nov 2009 11:09:30 GMT

<t:MyTestControl Test="10" ></t:MyTestControl>

        public Test
        {
            get { return (long)GetValue(TestProperty); }
            set { SetValue(TestProperty, value); }
        }

        public static readonly DependencyProperty TestProperty =
            DependencyProperty.Register("Test", typeof(long), typeof(MyTestControl), null);

Causes following exception:

System.Windows.Markup.XamlParseException occurred
Message="AG_E_PARSER_BAD_PROPERTY_VALUE [Line: 9 Position: 31]"
LineNumber=9
LinePosition=31
StackTrace:
       at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
       at SilverlightApplication2.MainPage.InitializeComponent()
       at SilverlightApplication2.MainPage..ctor()
InnerException:

Get same problem using int64, but int/int32 works.

I'm guessing it's a bug, or I'm not doing something right?

TreeViewItem/ToggleButton/ExpressionDark Theme bug

jasonxz — Thu, 12 Nov 2009 17:37:28 GMT

I've got a page that has a TreeView on it using the ExpressionDark Theme.

When I click a Button that shows a ChildWindow, it blows up.

If I remove the Theme from the TreeViewItem, I can open the ChildWindow just fine.

If I only allow one level of Items in the TreeView, I can open the ChildWindow just fine.

The Exception Message is: Cannot resolve TargetName Root.

The Stack Trace is:

   at MS.Internal.XcpImports.VisualStateManager_GoToState(Control reference, String StateName, Boolean useTransitions)
   at System.Windows.VisualStateManager.GoToState(Control control, String stateName, Boolean useTransitions)
   at System.Windows.Controls.Control.GoToState(Boolean useTransitions, String stateName)
   at System.Windows.Controls.Primitives.ToggleButton.ChangeVisualState(Boolean useTransitions)
   at System.Windows.Controls.Primitives.ButtonBase.UpdateVisualState(Boolean useTransitions)
   at System.Windows.Controls.Primitives.ButtonBase.UpdateVisualState()
   at System.Windows.Controls.Primitives.ButtonBase.OnIsEnabledChanged(IsEnabledChangedEventArgs e)
   at System.Windows.Controls.Control.OnIsEnabledChanged(Control control, EventArgs args)
   at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)

All of this leads me to believe that the problem is in the Style of the ToggleButton that's used by the TreeViewItem Style in the ExpressionDark Theme. So, I pulled the ExpressionDark Theme XAML into my project & I'm trying to figure out what to change to avoid the Exception. It appears that the Grid that's defined in the TreeViewItem's ToggleButton Style needs the x:Name="Root" or it causes problems when, I guess, the ChildWindow tries to disable everything. I'm also guessing this might be a problem if I tried to directly disable the TreeViewItem.

Just thought this might help someone else.