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  • Windows phone app xaml error

    - by thewarri0r9
    i am developing an app for windows phone 8 and i stuck on this code which visual studio showing invalid xaml. But Code compiles and works well. Invalid xaml Code is : <DataTemplate x:Key="AddrBookItemTemplate"> <StackPanel Margin="0,0,0,2" Orientation="Horizontal"> <StackPanel Width="80" Orientation="Horizontal" Height="80"> <Ellipse Margin="0" Height="70" Width="70" HorizontalAlignment="Left" Stroke="{x:Null}"> <Ellipse.Fill> <ImageBrush Stretch="Fill" ImageSource="{Binding imageBytes, Converter={StaticResource BytesToImageConverter}}"/> </Ellipse.Fill> </Ellipse> </StackPanel> <StackPanel Height="80" Margin="0" Width="380" HorizontalAlignment="Left"> <TextBlock FontWeight="Bold" Text="{Binding FirstName}" FontFamily="Segoe WP Semibold" FontSize="30" VerticalAlignment="Top" Margin="5,0,0,0" HorizontalAlignment="Left" /> <TextBlock Text="{Binding Phone}" FontFamily="Segoe WP" FontSize="24" Foreground="{StaticResource PhoneTextBoxReadOnlyBrush}" Margin="5,0,0,-12" Width="320" HorizontalAlignment="Left" VerticalAlignment="Top"/> </StackPanel> </StackPanel> </DataTemplate> I am serializing image by converting it to byte, it works fine but if image is null it gives an error. code behind: if (e.Results != null) { List<AddressBook> source = new List<AddressBook>(); foreach (var result in e.Results) { if (result.PhoneNumbers.FirstOrDefault() != null && result.GetPicture()!=null) { BitmapImage bmp = new BitmapImage(); BitmapImage nullbmp = new BitmapImage(); if (result.GetPicture() == null) { bmp.UriSource = new Uri(@"/Images/ci2.png", UriKind.RelativeOrAbsolute); } else { bmp.SetSource(result.GetPicture()); } listobj.Add(new AddressBook() { FirstName = result.DisplayName != null ? result.DisplayName : "", imageBytes = AddressBook.imageConvert(bmp), EmailAddress = "", LastName = "", Phone = result.PhoneNumbers.FirstOrDefault() != null ? result.PhoneNumbers.FirstOrDefault().PhoneNumber : "", }); } } Above code show an error "object reference not set to instance of an object". I want to show the default image (or color) in ellipse when image is null.What should I do?

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  • How to bind a ComboBox to generic dictionary with xaml code

    - by MMD MNC
    I'm using the following code : private Dictionary<string, string> GetNumber { get; set; } public ReportsLetterTra() { GetMonth = new Dictionary<string, string> { {"1", "First"}, {"2", "Second"} }; InitializeComponent(); } xaml code : <ComboBox DisplayMemberPath="value" SelectedValuePath="key" ItemsSource="{Binding ElementName=reportslettra,Path=GetNumber}" SelectedIndex="0" Name="cmbFromNumber" /> Why is not bind GetNumber to cmbFromNumber?!

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  • #region is XAML

    - by kenny
    I actually don't link #region in my code. BUT for some reason call me crazy, I would like to have them in my XAML. I would like whole sections to have a #region-like thing and collapse them (e.g. my <Window.CommandBindings, <Grid.*Definitions, <Menu, <Toolbar, etc.. Does this exist? If not, how about <RegionCollapse

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  • Get values from *.resx files in XAML

    - by nihi_l_ist
    Is it possible to add some value from resource file right into the XAML markup? Or for localization we always have to make something like this in *.cs file: txtMessage.Text = Messages.WarningUserMessage; Where Messages is resource, and txtMessage is TextBlock.

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  • WPF XAML Bind Grid

    - by Jon Archway
    I have a custom user control that is based on a Grid control. I have a ViewModel that exposes this as a property. I would like the XAML on the view to bind to this. I am sure this must be easy but I am quite new to WPF. How is this achieved? Many thanks in advance

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  • xaml shapes - relative to canvas size

    - by taglius
    I have the need to draw shapes in XAML that are always relative to the container window/canvas size. For example, I need a window to show a 3x3 grid on it, where the grid always splits the window into 3 equal parts. Can I create lines that are bound to 1/3 the width of the grid? thank you

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  • #region in XAML

    - by kenny
    I actually don't like #region in my code. BUT for some reason call me crazy, I would like to have them in my XAML. I would like whole sections to have a #region-like thing and collapse them (e.g. my <Window.CommandBindings, <Grid.*Definitions, <Menu, <Toolbar, etc.. Does this exist? If not, how about <RegionCollapse

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  • How can a code editor effectively hint at code nesting level - without using indentation?

    - by pgfearo
    I'm writing an XML text editor that provides 2 view options for the same XML text, one indented (virtually), the other left-justified. The motivation for the left-justified view is to help users 'see' the whitespace characters they're using for indentation of plain-text or XPath code without interference from indentation that is an automated side-effect of the XML context. I want to provide visual clues (in the non-editable part of the editor) for the left-justified mode that will help the user, but without getting too elaborate. I tried just using connecting lines, but that seemed too busy. The best I've come up with so far is shown in a mocked up screenshot of the editor below, but I'm seeking better/simpler alternatives (that don't require too much code). [Edit] Taking the heatmap idea (from: @jimp) I get something like this: or even these alternates:

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  • 'Content' is NOT 'Text' in XAML

    - by psheriff
    One of the key concepts in XAML is that the Content property of a XAML control like a Button or ComboBoxItem does not have to contain just textual data. In fact, Content can be almost any other XAML that you want. To illustrate here is a simple example of how to spruce up your Button controls in Silverlight. Here is some very simple XAML that consists of two Button controls within a StackPanel on a Silverlight User Control. <StackPanel>  <Button Name="btnHome"          HorizontalAlignment="Left"          Content="Home" />  <Button Name="btnLog"          HorizontalAlignment="Left"          Content="Logs" /></StackPanel> The XAML listed above will produce a Silverlight control within a Browser that looks like Figure 1.   Figure 1: Normal button controls are quite boring. With just a little bit of refactoring to move the button attributes into Styles, we can make the buttons look a little better. I am a big believer in Styles, so I typically create a Resources section within my user control where I can factor out the common attribute settings for a particular set of controls. Here is a Resources section that I added to my Silverlight user control. <UserControl.Resources>  <Style TargetType="Button"         x:Key="NormalButton">    <Setter Property="HorizontalAlignment"            Value="Left" />    <Setter Property="MinWidth"            Value="50" />    <Setter Property="Margin"            Value="10" />  </Style></UserControl.Resources> Now back in the XAML within the Grid control I update the Button controls to use the Style attribute and have each button use the Static Resource called NormalButton. <StackPanel>  <Button Name="btnHome"          Style="{StaticResource NormalButton}"          Content="Home" />  <Button Name="btnLog"          Style="{StaticResource NormalButton}"          Content="Logs" /></StackPanel> With the additional attributes set in the Resources section on the Button, the above XAML will now display the two buttons as shown in Figure 2. Figure 2: Use Resources to Make Buttons More Consistent Now let’s re-design these buttons even more. Instead of using words for each button, let’s replace the Content property to use a picture. As they say… a picture is worth a thousand words, so let’s take advantage of that. Modify each of the Button controls and eliminate the Content attribute and instead, insert an <Image> control with the <Button> and the </Button> tags. Add a ToolTip to still display the words you had before in the Content and you will now have better looking buttons, as shown in Figure 3.   Figure 3: Using pictures instead of words can be an effective method of communication The XAML to produce Figure 3 is shown in the following listing: <StackPanel>  <Button Name="btnHome"          ToolTipService.ToolTip="Home"          Style="{StaticResource NormalButton}">    <Image Style="{StaticResource NormalImage}"            Source="Images/Home.jpg" />  </Button>  <Button Name="btnLog"          ToolTipService.ToolTip="Logs"          Style="{StaticResource NormalButton}">    <Image Style="{StaticResource NormalImage}"            Source="Images/Log.jpg" />  </Button></StackPanel> You will also need to add the following XAML to the User Control’s Resources section. <Style TargetType="Image"        x:Key="NormalImage">  <Setter Property="Width"          Value="50" /></Style> Add Multiple Controls to Content Now, since the Content can be whatever we want, you could also modify the Content of each button to be a StackPanel control. Then you can have an image and text within the button. <StackPanel>  <Button Name="btnHome"          ToolTipService.ToolTip="Home"          Style="{StaticResource NormalButton}">    <StackPanel>      <Image Style="{StaticResource NormalImage}"              Source="Images/Home.jpg" />      <TextBlock Text="Home"                  Style="{StaticResource NormalTextBlock}" />    </StackPanel>  </Button>  <Button Name="btnLog"          ToolTipService.ToolTip="Logs"          Style="{StaticResource NormalButton}">    <StackPanel>      <Image Style="{StaticResource NormalImage}"              Source="Images/Log.jpg" />      <TextBlock Text="Logs"                  Style="{StaticResource NormalTextBlock}" />    </StackPanel>  </Button></StackPanel> You will need to add one more resource for the TextBlock control too. <Style TargetType="TextBlock"        x:Key="NormalTextBlock">  <Setter Property="HorizontalAlignment"          Value="Center" /></Style> All of the above will now produce the following:   Figure 4: Add multiple controls to the content to make your buttons even more interesting. Summary While this is a simple example, you can see how XAML Content has great flexibility. You could add a MediaElement control as the content of a Button and play a video within the Button. Not that you would necessarily do this, but it does work. What is nice about adding different content within the Button control is you still get the Click event and other attributes of a button, but it does necessarily look like a normal button. Good Luck with your Coding,Paul Sheriff ** SPECIAL OFFER FOR MY BLOG READERS **Visit http://www.pdsa.com/Event/Blog for a free video on Silverlight entitled "Silverlight XAML for the Complete Novice - Part 1."

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  • Can you view XAML as "regular" .net code (c#\vb.net)?

    - by cody
    There are times when I find some example XAML that I want\need to do in code (c#\vb.net). I assume at some point the XAML becomes code, or at least IL. So my questions: Am I correct in assuming that XAML is converted to IL? (or if not IL what does it become?) If the above is correct, when does XAML become IL (or whatever it becomes)? Is there some way to see the XAML in as "code" Thanks.

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  • Non breaking space in XAML vs. code

    - by Henrik Söderlund
    This works fine, and correctly inserts non-breaking spaces into the string: <TextBlock Text="Non&#160;Breaking&#160;Text&#160;Here"></TextBlock> But what I really need is to replace spaces with non-breaking spaces during data binding. So I wrote a simple value converter that replaces spaces with "&#160;". It does indeed replace spaces with "&#160;" but "&#160;" is displayed literally instead of showing as a non-breaking space. This is my converter: public class SpaceToNbspConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return value.ToString().Replace(" ", "&#160;"); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } #endregion } Does anybody know why it works in XAML, but not in code? /Henrik

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  • EventTrigger RoutedEvent in wpf xaml

    - by Cinaird
    I have a problem in wpf xaml and i'm pretty new on this so it may be something basic i want to rotate a ellipse 360 degree <Ellipse Name="test" Fill="Black" StrokeThickness="5" Margin="0,0,0,0" Height="66"> <Ellipse.Triggers> <EventTrigger RoutedEvent="Ellipse.Loaded" SourceName="test"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="test" Storyboard.TargetProperty="(Ellipse.RenderTransform).(RotateTransform.Angle)" From="0" To="360" Duration="0:0:0.5" RepeatBehavior="1x" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Ellipse.Triggers> </Ellipse> But nothing happens, what is wrong?

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  • How to convert Silverlight XAML to Resource dictionary in Silverlight 2

    - by Vecdid
    I am looking for the quickest and easiest way to combine two silverlight projects. Once has controls all in Silverlight XAML the other is template driven and uses a template based on a Silverlight resource dictionary. I am looking for some advice and resources on the best and quickest way to do this. One project is based on this: Silverlight Image Slider http://www.silverlightshow.net/items/Image-slider-control-in-Silverlight-1.1.aspx the other project is based on this: Open Video Player http://www.openvideoplayer.com/ I need to move the slider into the player, but the player uses a template and I just don't get how to merge the two as I do not understand resource dictionaries as they are applied to the player. We have completely gutted and made each proiject do what we want, but heck if I can figure out how to combine them.

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  • Visual Studio 2010 randomly crashes when editing XAML

    - by Catalin DICU
    Visual Studio 2010 randomly crashes when editing XAML in a WPF application. I'm running it on Win 7 fully updated. The installed extensions/addons are: Resharper PowerCommands The crash log is: Faulting application name: devenv.exe, version: 10.0.30319.1, time stamp: 0x4ba1fab3 Faulting module name: clr.dll, version: 4.0.30319.1, time stamp: 0x4ba1d9ef Exception code: 0xc0000005 Fault offset: 0x0017f146 Faulting process id: 0xd78 Faulting application start time: 0x01caedc7341e18e3 Faulting application path: C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe Faulting module path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Anyone experiencing this ? And maybe found an explication ?

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  • XAML trigger as StaticResource

    - by adrianm
    Why can't I create a trigger and use it as a static resource in XAML? <Window.Resources> <Trigger x:Key="ValidationTrigger" x:Shared="False" Property="Validation.HasError" Value="true"> <Setter Property="FrameworkElement.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)/ErrorContent}"/> </Trigger> <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}"> <Style.Triggers> <StaticResource ResourceKey="ValidationTrigger"/> </Style.Triggers> </Style> </Window.Resources> I get an errormessage at runtime "Value cannot be null. Parameter name: triggerBase Error at object 'System.Windows.Markup.StaticResourceHolder' in markup file"

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  • Visual Studio Performance when editing XAML/Silverlight files

    - by driAn
    When I work on Silverlight projects within Visual Studio 2008, I regularly notice that the XAML editor hangs for up to 10 seconds. This because Visual Studio consumes 100% CPU during that timeframe. Any ideas how I could fix that? I assume this is some kind of background compiling for itellisense or something similiar. It happens during editing, multiple times an hour, without me doing any special actions. System: Server 2008 Std Visual Studio 2008 SP1 latest updates... I wonder if anyone else experienced this issue. Any help would be appreciated.

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  • [XAML] datatrigger

    - by Bert
    Hi, I have a UserControl in XAML with a couple of buttons.... When the "VideoEnable" property in my C# code change to true i want to change the color of a button. The following code compiles but crashes and I cant find a right solution <UserControl.Triggers> <DataTrigger Binding="{Binding VideoEnable}" Value="true"> <Setter Property="Button.Background" Value="Green" TargetName="VideoButton" /> <Setter Property="Grid.Background" Value="Blue" TargetName="videoGrid" /> </DataTrigger> </UserControl.Triggers>

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  • Translate ImageButton from C# to XAML

    - by Bill
    I worked out the C# code to create an ImageButton (below) that has three images (one base-image and two overlays) and three text boxes as the face of the button. I am inheriting from the Button class, which unfortunately includes several components that I didn't realize would surface until after coding and need to remove, namely the bright-blue surrounding border on IsMouseOver, and any visible borders between the buttons, as the buttons will end up in a wrapPanel and the borders need to be seamless. Now that the format has been worked out in C#, I expect that I need to translate to XAML so that I can create a ControlTemplate to get the functionality necessary, however I am not certain as to the process of translating from C# to XAML. Can anyone steer me in the right direction? public class ACover : Button { Image cAImage = null; Image jCImage = null; Image jCImageOverlay = null; TextBlock ATextBlock = null; TextBlock AbTextBlock = null; TextBlock ReleaseDateTextBlock = null; private string _TracksXML = ""; public ACover() { Grid cArtGrid = new Grid(); cArtGrid.Background = new SolidColorBrush(Color.FromRgb(38, 44, 64)); cArtGrid.Margin = new System.Windows.Thickness(5, 10, 5, 10); RowDefinition row1 = new RowDefinition(); row1.Height = new GridLength(225); RowDefinition row2 = new RowDefinition(); row2.Height = new GridLength(0, GridUnitType.Auto); RowDefinition row3 = new RowDefinition(); row3.Height = new GridLength(0, GridUnitType.Auto); RowDefinition row4 = new RowDefinition(); row4.Height = new GridLength(0, GridUnitType.Auto); cArtGrid.RowDefinitions.Add(row1); cArtGrid.RowDefinitions.Add(row2); cArtGrid.RowDefinitions.Add(row3); cArtGrid.RowDefinitions.Add(row4); ColumnDefinition col1 = new ColumnDefinition(); col1.Width = new GridLength(0, GridUnitType.Auto); cArtGrid.ColumnDefinitions.Add(col1); jCImage = new Image(); jCImage.Height = 240; jCImage.Width = 260; jCImage.VerticalAlignment = VerticalAlignment.Top; jCImage.Source = new BitmapImage(new Uri(Properties.Settings.Default.pathToGridImages + "jc.png", UriKind.Absolute)); cArtGrid.Children.Add(jCImage); cArtImage = new Image(); cArtImage.Height = 192; cArtImage.Width = 192; cArtImage.Margin = new System.Windows.Thickness(3, 7, 0, 0); cArtImage.VerticalAlignment = VerticalAlignment.Top; cArtGrid.Children.Add(cArtImage); jCImageOverlay = new Image(); jCImageOverlay.Height = 192; jCImageOverlay.Width = 192; jCImageOverlay.Margin = new System.Windows.Thickness(3, 7, 0, 0); jCImageOverlay.VerticalAlignment = VerticalAlignment.Top; jCImageOverlay.Source = new BitmapImage(new Uri( Properties.Settings.Default.pathToGridImages + "jc-overlay.png", UriKind.Absolute)); coverArtGrid.Children.Add(jCImageOverlay); ATextBlock = new TextBlock(); ATextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); ATextBlock.Margin = new Thickness(10, -10, 0, 0); cArtGrid.Children.Add(ATextBlock); AlTextBlock = new TextBlock(); AlTextBlock.Margin = new Thickness(10, 0, 0, 0); AlTextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); cArtGrid.Children.Add(AlTextBlock); RDTextBlock = new TextBlock(); RDTextBlock.Margin = new Thickness(10, 0, 0, 0); RDTextBlock.Foreground = new SolidColorBrush(Color.FromRgb(173, 176, 198)); cArtGrid.Children.Add(RDTextBlock); Grid.SetColumn(jCImage, 0); Grid.SetRow(jCImage, 0); Grid.SetColumn(jCImageOverlay, 0); Grid.SetRow(jCImageOverlay, 0); Grid.SetColumn(cArtImage, 0); Grid.SetRow(cArtImage, 0); Grid.SetColumn(ATextBlock, 0); Grid.SetRow(ATextBlock, 1); Grid.SetColumn(AlTextBlock, 0); Grid.SetRow(AlTextBlock, 2); Grid.SetColumn(RDTextBlock, 0); Grid.SetRow(RDTextBlock, 3); this.Content = cArtGrid; } public string A { get { if (ATextBlock != null) return ATextBlock.Text; else return String.Empty; } set { if (ATextBlock != null) ATextBlock.Text = value; } } public string Al { get { if (AlTextBlock != null) return AlTextBlock.Text; else return String.Empty; } set { if (AlTextBlock != null) AlTextBlock.Text = value; } } public string RD { get { if (RDTextBlock != null) return RDTextBlock.Text; else return String.Empty; } set { if (RDTextBlock != null) RDTextBlock.Text = value; } } public ImageSource Image { get { if (cArtImage != null) return cArtImage.Source; else return null; } set { if (cArtImage != null) cArtImage.Source = value; } } public string TracksXML { get { return _TracksXML; } set { _TracksXML = value; } } public double ImageWidth { get { if (cArtImage != null) return cArtImage.Width; else return double.NaN; } set { if (cArtImage != null) cArtImage.Width = value; } } public double ImageHeight { get { if (cArtImage != null) return cArtImage.Height; else return double.NaN; } set { if (cArtImage != null) cArtImage.Height = value; } } }

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  • Conditional XAML

    - by Nicholas
    For easy of development I'm using a ViewBox to wrap all content inside a Window. This is because my development machine has a smaller screen than the deployment machine so using a ViewBox allows for better realisation of proportion. Obviously there is no reason for it to be there on Release versions of the code. Is there an easy method to conditionally include/exclude that 'wrapping' ViewBox in XAML? E.g. <Window> <Viewbox> <UserControl /*Content*/> </Viewbox> </Window>

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