Project Settings for Multiple Addins

[EvanMosher]

I have 2 addins that i would like to have settings items for. I have one working with Project Settings all set up, but when i try to add settings to my other addin, it seems that the override function to load project settings, OnReadSettingsAsync, only gets triggered in the one addin. Is there a way to share these settings across multiple addins?

[GKmieliauskas]

Hi Evan,

I store settings in library dll as singleton class with properties, but use them from more than 10 add-ins. Library dll added to GAC. Project settings form is stored in one of add-ins. That add-in manages loading and saving project properties from Project to singleton class and back.  There is no cross-references between add-ins.

There is only one thing you need to do that project settings add-in will be loaded first. More info here:

https://www.esri.com/arcgis-blog/products/arcgis-pro/uncategorized/manage-arcgis-pro-add-in-loading/

In addition I use (<modules><insertModule .... autoLoad="true">...). 

[DanH1]

Evan,

I'm going to need to do this before the end of the summer too so took a quick break and decided to create two boilerplate C# ArcGIS Pro SDK AddIn's.  In both instances, I overrode both the OnWriteSettingsAsync and the OnReadSettingsAsync as shown below.  The only other thing I did (took make sure the modules would load since I didn't write any other code) was I edited each config.daml to turn on the autoload="true" for the <insertModule> tag.  To get ArcGIS Pro to fire the OnWriteSettingsAsync, I just adjusted the zoom level of the map and responded "Yes" to whether I wanted to save settings and both AddIn's OnWriteSettingsAsync fired and save the "Name" string that I specified.  When I reloaded the same project file, both OnReadSettingsAsync were called one after the other. I confirmed this via break-point in each method.  I'm using ArcGIS Pro 2.4 and the corresponding SDK and Visual Studio 2019.  Hope that helps.

        protected override Task OnWriteSettingsAsync(ModuleSettingsWriter settings)
        {
            System.Diagnostics.Debug.WriteLine("OnWriteSettings TestWriteSettingsNumber2.....");
            settings.Add("Name", "TestWriteSettingsNumber2");
            return base.OnWriteSettingsAsync(settings);
        }
        protected override Task OnReadSettingsAsync(ModuleSettingsReader settings)
        {
            string l_progress = settings.Get("Name") as string;
            return base.OnReadSettingsAsync(settings);
        }‍‍‍‍‍‍‍‍‍‍‍

[EvanMosher]

Hey Dan,

Thanks for the reply,

Are the modules in both addins both called Module1? Do you have these in seperate Visual Studio projects? and does each project have a ProjectSettingsViewModel? I have the AutoLoad=true for both but only triggering the one OnReadSettingsAsync.

-Evan

[DanH1]

1. They are boilerplate projects so both projects have Module1 (not renamed)

2. They in separate Visual Studio Projects but the same solution.

3. I did not use the ProjectSettingsViewModel.  Just to save settings to your project you don't need that IMHO (unless you really need the user to see a property page).  As you can see all I did was override the the OnRead... and OnWrite...methods.  In one of our AddIns we have quite a few state variables and user settings are that are persisted this way, again, without using ProjectSettingsViewModel.

Hope that helps.