Toast is throwing a System.Runtime.InteropServices.COMException

[Blackswater]

Hello all,
I have a Problem and I don't know really how to solve it.
I have a quite simple Application, it is just a Page in xaml with a Button. The Button as a Clicked handler, which is showing a Toast.
This is how I create the Toast
private async void Button_Clicked(object sender, EventArgs e)
{
var toast = Toast.Make("Test");
await toast.Show();
}

the Problem is that the Show method is throwing the System.Runtime.InteropServices.COMException.

What am I doing wrong?

I am on .Net8 and updated all Nuget Packages.

The CommunityToolkitSample solution works fine for me, so I think it is something with my solution. But I don't know what it could be.

[GeorgeLeithead]

Are you using:

using CommunityToolkit.Maui.Alerts;

Then something like:
async void TapGestureRecognizer_Tapped(object sender, EventArgs e)
{
var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5));
await ShowToastGestureMessage("AvatarView Tap Gesture Recognizer, tapped.", cts.Token);
}

static Task ShowToastGestureMessage(string message, CancellationToken token)
{
	Core.IToast toast = Toast.Make(message, Core.ToastDuration.Short);
	return toast.Show(token);
}

[Blackswater]

I will try this out.

[Blackswater]

This does not work in my solution. Trying to prepare a sample solution for this

[GeorgeLeithead]

Can you attach a small REPO, so that everyone/anyone can review and see what can be done to resolve/help?

[Blackswater]

@GeorgeLeithead @bijington
this is how you can simply reproduce it.

1. Create a new Solution
2. Add the Nuget Package
3. Create a Toast
4. Change the commandName to "Project" in the launcherSettings.json
5. add in the csproj this: <WindowsPackageType Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">None</WindowsPackageType>

The Toast will not be shown anymore.

[bijington]

Why are you changing the settings in points 4 and 5?

I'm just guessing now but I suspect that the AppNotification API that the Windows implementation is using relies on something that doesn't play well with those settings

[Blackswater]

I need to do this, because I need to ship the App via a MSI and not over Msix. The MSI is builded via WIX. If you have any other Idea, how I could ship the App with Msix and WIX, let me know

[bijington]

That's outside of my area of knowledge. What I would suggest doing is trying to find out whether there is a dependency which is being shipped through the MSIX approach which you are not including in your MSI. It might be a case of building the MSIX and comparing what gets installed vs your current install. Or try running something like FUSLOGVW (https://learn.microsoft.com/en-us/dotnet/framework/tools/fuslogvw-exe-assembly-binding-log-viewer) and see if it detects something isn't being loaded that you rely on.

[Blackswater]

Thanks for your help. I need to look around to see, what I can do.

[Blackswater]

Maybe worth to mention is that, I have in the launcherSettings.json this:
{
"profiles": {
"Windows Machine": {
"commandName": "Project",
"nativeDebugging": false
}
}
}

So I don't build it as MsixPackage

[CliffAgius]

Closed as answered, if closed in error please let us know to re-open.