How to set ManagedAction execute before Appsearch

[Torchok19081986]

Hi Oleg, is there some posibility to set ManagedAction before Appsearch ?
I have to check if Windows OS is Server and then check if I can install my Application on it. I create ManagedAction and add MA to prject
.. new ManagedAction(CustomAction.CheckOS, Return.check, When.Before, Step.Appsearch, Condition.NOT_Installed), then during install MA will be executed and return false. After that i got Wizard Message . "... System was not modified." This works fine. How do i execute MA before show WelcomeDialog and show some Message like "OS not Windows Server Installer cant be executed on this OS " something like that ?

[oleg-shilo]

If you are using ManagedUI you can use two methods that are executed before the UI is displayed:

project.UIInitialized += ...
project.UILoaded += ...

Have a look at CustomUISequence, which shows how to check the product compatibility and prompt the user.

[Torchok19081986]

Thanks Oleg. I tried it and works good. Only one question. if i set Result to Failure exit dialog not apears with my message, that components are not installed or not found. how can i set this ?

[oleg-shilo]

You will need to set e.ManagedUI.Shell.ErrorDetected.

This is how it's done in "MajorUpgrade" sample:

project.UIInitialized += (SetupEventArgs e) =>
{
    Version installedVersion = e.Session.LookupInstalledVersion();
    Version thisVersion = e.Session.QueryProductVersion();

    if (thisVersion <= installedVersion)
    {
        MessageBox.Show("Later version of the product is already installed : " + installedVersion);

        e.ManagedUI.Shell.ErrorDetected = true;
        e.Result = ActionResult.UserExit;
    }
};

[Torchok19081986]

Thanks. Works really great. How can i set my message in exitdialog in descrptionpart? I get always standard error. System was not modified .... on ExitDialog.
I need to show something like "Setup was aborted, because systemrequirements are not accomplished. " .

[oleg-shilo]

The UX of the ManagetUI dialogs mimics stock UI that comes with MSI/WiX. And that UX does not allow runtime customization of the exit dialog. I always shows the the standard "outcome description" and the specific error is displayed earlier when the error is detected.

Thus, currently, you cannot do it directly. The only option you have is to have a custom UI sequence and customize your ExitDialog and show the description either from custom global storage (type static property, MSI property, environment variable) that is initialized in the UIInitialized event handler.

Saying that kind of see here an opportunity to improve the dev experience.
I am re-qualifying this issue into 'enhancement' and the next release will have optional API just fro cases like yours:

e.ManagedUI.Shell.CustomErrorDescription = "Setup was aborted, because system " +
                                           "does not meet deployment requirements.";

[Torchok19081986]

Thanks. I will wait for new Release 1.6.4.0.

[oleg-shilo]

All done. You can update you NuGet packages now

[Torchok19081986]

Hallo Oleg, i just tested new e.ManagedUI.Shell.CustomErrorDescription with my Description "Setup was aborted, because system does not meet deployment requirements."; Works great. Thanks.

[oleg-shilo]

Great. Closing the issue.