C#•9mo ago

❔ d:DesignInstance errors on my forms' root element

I have some in my WPF forms (two of them). It's spitting out some errors that look like bogus. Can someone look at them and tell me what's going on?

Severity    Code    Description    Project    File    Line    Suppression State
Error    XDG0008    The name "UserNetwork" does not exist in the namespace "clr-namespace:BestChat.IRC.Global.ViewModel".    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Error    XDG0023    A null or zero length string does not represent a valid Type.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Error    XLS0419    Undefined CLR namespace. The 'clr-namespace' URI refers to a namespace 'BestChat.IRC.Global.ViewModel' that could not be found.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    10    
Error    XDG0008    The name "ServerInfo" does not exist in the namespace "clr-namespace:BestChat.IRC.Global.ViewModel".    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11    
Error    XDG0023    A null or zero length string does not represent a valid Type.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11    
Warning    XLS1107    Design instance type 'ViewModel:UserNetwork' not found    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Warning    XLS1107    Design instance type 'ViewModel:ServerInfo' not found    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11

Severity    Code    Description    Project    File    Line    Suppression State
Error    XDG0008    The name "UserNetwork" does not exist in the namespace "clr-namespace:BestChat.IRC.Global.ViewModel".    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Error    XDG0023    A null or zero length string does not represent a valid Type.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Error    XLS0419    Undefined CLR namespace. The 'clr-namespace' URI refers to a namespace 'BestChat.IRC.Global.ViewModel' that could not be found.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    10    
Error    XDG0008    The name "ServerInfo" does not exist in the namespace "clr-namespace:BestChat.IRC.Global.ViewModel".    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11    
Error    XDG0023    A null or zero length string does not represent a valid Type.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11    
Warning    XLS1107    Design instance type 'ViewModel:UserNetwork' not found    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    13    
Warning    XLS1107    Design instance type 'ViewModel:ServerInfo' not found    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\ServerDomainEditorDlg.xaml    11

Here's a sample of the source: d:DataContext="{d:DesignInstance Type=ViewModel:UserNetwork}".

17 Replies

JakenVeina•9mo ago

I'm gonna hone in on the one thay says BestChat.IRC.Global.ViewModel is not a namespace that exists.

Will Pittenger•9mo ago

That was where I was going. But it does. It's a dependency of this project.

JakenVeina•9mo ago

it's not in the current assembly?

Will Pittenger•9mo ago

Nope.

JakenVeina•9mo ago

then you need to specify that

Will Pittenger•9mo ago

Go to go. Be back later.

JakenVeina•9mo ago

I'm guessing you originally had it in this assembly, and then moved it

Will Pittenger•9mo ago

No, I was going direct to the Model. Now I'm not.

JakenVeina•9mo ago

my point being that VS should hace auto-completed the correct specification for that namespace being in a different assembly

Will Pittenger•9mo ago

Now the xmlns was missing. I tried to add it, but it says there's no such namespace out there.

JakenVeina•9mo ago

huh?

Will Pittenger•9mo ago

It won't list the namespace when I type "ViewModel". It's as though the project reference is missing--but it isn't. I just checked. I'll check in later.

JakenVeina•9mo ago

the correct syntax is

xmlns:me="clr-namespace:MyNamespace;assembly=MyAssembly"

xmlns:me="clr-namespace:MyNamespace;assembly=MyAssembly"

Will Pittenger•9mo ago

I suspect even if I had the correct syntax, I'd be told it still couldn't find the assembly.

JakenVeina•9mo ago

why would you suspect that?

Will Pittenger•9mo ago

Bad experiences and Murphy's law. I think I'm going to put the View Model's functionality back into the Model classes anyway. I only needed a few extra properties. The View Model was a lot of work. But there's no reason I can see why it should claim it can't find the namespace.

Accord•8mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ d:DesignInstance errors on my forms' root element