The component does not have a resource identified by the uri

Question

I want to create a Generic DataGrid to use on all my Views/UserControls.

This is my structure:

Class Library called \"Core\":

Answer 1

You can try this approach

I created my own InitializeComponent() and I called this way

this.LoadViewFromUri("/NameOfProject;component/mainwindow.xaml");


public static void LoadViewFromUri(this Window window, string baseUri)
    {
        try
        {
            var resourceLocater = new Uri(baseUri, UriKind.Relative);
            var exprCa = (PackagePart)typeof(Application).GetMethod("GetResourceOrContentPart", BindingFlags.NonPublic | BindingFlags.Static).Invoke(null, new object[] { resourceLocater });
            var stream = exprCa.GetStream();
            var uri = new Uri((Uri)typeof(BaseUriHelper).GetProperty("PackAppBaseUri", BindingFlags.Static | BindingFlags.NonPublic).GetValue(null, null), resourceLocater);
            var parserContext = new ParserContext
            {
                BaseUri = uri
            };
            typeof(XamlReader).GetMethod("LoadBaml", BindingFlags.NonPublic | BindingFlags.Static).Invoke(null, new object[] { stream, parserContext, window, true });

        }
        catch (Exception)
        {
            //log
        }
    }

Answer 2

This can happen also when closing and reopening a window. So it could also have nothing to do with packages and/or dlls.
I solved the problem thanks to the solution posted by PainElemental, which is IMHO underrated:

namespace MyNamespace
{
  public partial class MyDialog : Window
  {
    public MyDialog(ExcelReference sheetReference)
      {
        this.LoadViewFromUri("/MyApp;component/mynamespace/mydialog.xaml");
      }
  }
}

LoadViewFromUri is implemented as an extension, as PainElemental wrote. The craziest is that I also wrote in the same project other windows without encountering any problem.
Thank you PainElemental, you ended my protracted pain!

Answer 3

Quicker than closing all of Visual Studio is just to kill XDescProc.exe in your task manager.

XDescProc is the designer. The moment the process is closed you'll see a Reload the designer link in visual studio. Click that and XDes will be started again and your 'no resource' error should be gone.

Here's the link visual studio shows after you kill the designer process:

Answer 4

I was doing something very similar with the same result. I had one C# class library that contained a WPF control called UsageControl (xaml with accompanying xaml.cs file). In a separate C# project(i.e. separate dll) I created a C# class CPUUsageControl which inherited from UsageControl, but put its own spin on it. When I tried to use the CpuUsageControl on one of my views I got the same error you did.

What I did to fix that was in my seperate assembly, instead of creating a class that inherited from the base control, i created a new WPF Control that contained the base control. I then put all of the logic that was contained in the CpuUsage class into the WpfCpuUsageControl's code behind. I was able to use this object is all of my other controls just fine.

For your Control "GridView" i would create a new WPF user control, call it GridView and make it contain a "ViewBase" as the content of the Grid control.Inside of the ViewBase's content put in your DataGrid, like this:

<UserControl....>
    <Grid>
        <ViewBase name="vBase">
            <DataGrid name="dGrid" />
        </ViewBase>
    </Grid>
</UserControl>

It is also not apparent to me that you need ViewBase to inherit from UserControl directly. If all you want are for your controls to have certain properties and method why not just make a BaseControl class (that does not inherit from anyone but object) and have future controls inherit from it. Perhaps an abstract base class or interface is what you're after.

For MVVM WPF projects, I typically have a BaseViewModel which implements INotifyPropertyChanged for me so I don't have to do that same code everywhere.

Best of luck, I know this problem was a huge pain to figure out. The exception message and google are most unhelpful!

Answer 5

• Delete obj folder
• Delete bin folder
• Rebuild solution

Worked for me!

Also if you are loading assemblies using Assembly.LoadFile, check out AppDomain.CurrentDomain.GetAssemblies() for duplicate assemblies in the current AppDomain. Because in auto-generated code of WPF UserControl, the component will be loaded using its relative URI. And since there are duplicate assemblies in the current AppDomain, application doesn't know which one to use.

Answer 6

Hi the way solve this problem was to rename the xaml usercontrol to all smallcaps on InitializeComponent()...

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