Develop Reference

Displaying an image in WPF (without Visual Studio)

I'm trying to display an image in WPF (whether by defining it as a resource or simply by referring to the path and not defining a resource) but the image doesn't show in my application. I have a JPG image with the name 'MyImage' in a folder called 'Images'. I've seen a lot of answers saying that I need to set the build action to resource in Visual Studio but my computer cannot handle Visual Studio or any of the alternate IDE's so I'm basically doing this using cmd and Sublime Text as a text Editor.
Here's the code for MainWindow.xaml :
<Window x:Class="WPF106.MainWindow"
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"
xmlns:local="clr-namespace:WPF106"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="600">
<StackPanel>
<TextBlock Text="Dummy1"/>
<Image Source="/Images/MyImage.jpg" Height="150" />
<TextBlock Text="Dummy2" />
</StackPanel>
</Window>
The project folder
The application result
P.S. I have tried using Visual Studio but unfortunately that is not at all an option so if anyone could come up with a solution to this without using it (and preferably using the image as a resource), please let me know.

Unable to load DLL in the WPF-project

I do have a UserControl (works) which I would like to use in a WPF project. When I run the application I get following error
Unable to load DLL 'VCECLB.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)"
This is a C++ dll and if I add it under references it goes to the project folder like this:
I also add it in the output folder \bin\x64\Release but without success. What I am doing wrong here? Any feedback would be highly appreciated!
UPDATE:
The XAML for loading the UserControl looks like this:
<Window x:Class="WpfApplication1LL_Neu.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:lowLightGrab="clr-namespace:LowLightGrab;assembly=LowLightGrab"
Title="MainWindow" Height="350" Width="525">
<Grid>
<WindowsFormsHost Height="290" HorizontalAlignment="Left" Margin="16,10,0,0" Name="windowsFormsHost1" VerticalAlignment="Top" Width="475">
<lowLightGrab:UserControl1/>
</WindowsFormsHost>
</Grid>
</Window>
Thanks

Once added as reference it will be copied to output folder.
For design time you have to add in your Window:
xmlns:VCECLB="clr-namespace:VCECLB;assembly=VCECLB"

<Image /> displays image at design-time but not at runtime; why?

I'm trying to insert an image into my Windows Store app and it appears in design-time in the XAML editor but at runtime the image does not appear.
I'm pretty sure I'm using the right code here, and I have added the logo to the Assets folder however it still doesn't appear at runtime. If I got it wrong with the code or the Assets folder then it wouldn't even be appearing at design-time in the editor I think so what gives?
XAML:
<Page
x:Class="AppName.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:AppName"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Image Source="Assets\Logos\16380.png"
Stretch="None"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Margin="120, 0, 0, 0"
/>
</Grid>
</Page>

I've managed to solve this problem.
When inserting images onto a page in XAML, you need to right-click the image file in Solution Explorer, click Properties and then make sure its Build Action is set to Content and then set Copy to Output Directory to Copy if newer. You also need to use forward slashes (/) and not back-slashes ().

Adding x:Name to a user control gives error in generated code of page its used in

I am basically using a user control for the first time, so hopefully it's just a dumb mistake.
I have a simple user control
<UserControl x:Class="TestProject.WebApp.myUserControl"
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:riaControls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.DomainServices"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk">
<Grid>
<sdk:AutoCompleteBox Name="myACB" ItemsSource="{Binding Data}" FilterMode="StartsWith" MinimumPrefixLength="2" >
</sdk:AutoCompleteBox>
</Grid>
</UserControl>
I am using the control in another page (in a stack panel):
<navigation:Page x:Class="TestProject.WebApp.myPageView"
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:local="clr-namespace:TestProject.WebApp"
xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation">
<Grid>
<StackPanel Orientation="Horizontal">
<local:myUserControl x:Name="myUC" />
</StackPanel>
</Grid>
</navigation:Page>
The control is in the same namespace as page. Removing the x:Name allows the project to compile and the control functionally works. When x:Name is specified I get an error in the generated code of the page:
Type 'TestProject.WebApp.myUserControl' is not defined.
It happens on these lines of code:
internal TestProject.WebApp.myUserControl myUC;
this.myUC == (TestProject.WebApp.myUserControl)this.FindName("myUC")
I tried with two different controls. Same thing. The generated code has "using TestProject.WebApp;" so I don't know why there is an error only when I have a named instance of the control.
I also cannot seem to use just the Name property. I even tried overloading the NameProperty in the control.

I was able to find a post about this here:
.g.vb file claims that Type X is not defined, even though it is!
Apparently, there is an issue when a project has a service reference (in my case I am using RIA services) and the user control resides in an assembly with the same root namespace as the one you are trying to use it in.
So for me it was,
TestProject.WebApp
Then I tried creating a new project for just the control
TestProject.Controls
Same problem.
Then, when I renamed the project and changed the namespace to
CustomControls
it worked.
Hopefully this saves someone else from some frustration and I really hope this problem can be fixed by MS soon.

What you are showing here should work. What is the default namespace in your project property's? Also did you rename your user control after you created it. Both of those issues could be causing you problems.

Using ICSharpCode.AvalonEdit on .Net 3.5?

I'm trying to use the ICSharpCode.AvalonEdit.TextEditor control from the SharpDevelop 4.0 project in a WPF app that I'm building, but I can't seem to get it to work.
I checked out a copy of the source code from svn://svnmirror.sharpdevelop.net/sharpdevelop/trunk/SharpDevelop/src/Libraries/AvalonEdit at revision 4304. Then, I built the project using Visual Studio 2008 SP1, which succeeded without errors.
I then created a blank new WPF project, added the build DLL to the toolbox and dropped the TextEditor control onto the default empty window, like so:
<Window x:Class="AvalonEditTest.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:avalonedit="http://icsharpcode.net/sharpdevelop/avalonedit"
Title="Window1" Height="300" Width="300" >
<Grid x:Name="LayoutRoot">
<avalonedit:TextEditor Name="textEditor" />
</Grid>
</Window>
However, when I run the project, the form comes up completely blank. No caret, the mouse cursor stays the default pointer, and the window does not respond to keypresses.
Am I missing something, or is AvalonEdit just a little broken?
[EDIT: I'm starting to think it might be related to my specific setup. I'm running the 64-bit Windows 7 RC. Might that have something to do with it? I've tried building it for x86 only, made no difference.]

Are you sure your namespace declaration is correct?
You can try something like this:
<Window x:Class="Editor.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300"
xmlns:e="clr-namespace:ICSharpCode.AvalonEdit;assembly=ICSharpCode.AvalonEdit">
<Grid>
<e:TextEditor x:Name="Editor" WordWrap="True" Height="200">
</e:TextEditor>
</Grid>
</Window>
I was able to get it to work without any issues.

The AvalonEdit TextEditor is just a view for a TextDocument model.
The problem was that a new AvalonEdit instance didn't start connected to any model instance, so there wasn't anything to edit.
The reason the code from statictype worked was that he didn't use <avalonedit:TextEditor/>, but <avalonedit:TextEditor></avalonedit:TextEditor>. This will assign an empty string to the Text property, which caused the editor to implicitly create a new document.
But this isn't relevant with recent AvalonEdit versions anymore, the editor will now always create a new TextDocument.

This works for me with the latest build
<DockPanel LastChildFill="True">
<avalonedit:TextEditor
HorizontalAlignment="Stretch"
Name="textEditor1"
VerticalAlignment="Stretch" />
</DockPanel>