Multiple DialogHost problem

[thiago-rcarvalho]

Hi!

I'm developing an application with multiple DialogHosts.
When I close a new view (which has a DialogHost) it takes some time to call the unload event from the DialogHost class and remove that view from de LoadedInstances.
And if I try to open that view imediatelly, it shows me this message:

Multiple viable DialogHosts. Specify a unique Identifier on each DialogHost, especially where multiple Windows are a concern.

If I remove the "if (targets.Count > 1)", my application seems to work normally.

Could you take a look?

Here is a repository with a simple example (and how to reproduce the error):
https://github.com/stealthcold/dialoghostexample.git

thanks

[ButchersBoy]

Exactly as the error says:

Multiple viable DialogHosts. Specify a unique Identifier on each DialogHost, especially where multiple Windows are a concern.

When you first open the dialog it works, because the second dialoghost hasnt loaded yet. Then, when you reopen there are two loaded dialoghosts, hence Multiple viable Dialoghosts.

It doesn't know which one to use.

You can do something like this:

<materialDesign:DialogHost Identifier="Main">

var result = await DialogHost.Show(view, "Main");

[velzher]

Estas lineas pueden ayudarte:

var Popup = new usercontrolEjemplo() { };
DialogHostEx.ShowDialog(this, Popup);