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Richard Deeming14-Apr-20 0:05
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Questiontraversing two lists simultaneously Pin
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Question2 Async/Await Questions Pin
Kevin Marois8-Apr-20 18:10
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AnswerRe: 2 Async/Await Questions Pin
Richard Deeming9-Apr-20 0:16
mveRichard Deeming9-Apr-20 0:16 
If there's no return value, then it makes sense to return Task rather than Task<T>. I've never seen any problems doing that.

For the property setter, I'd be inclined to change it to:
set
{
    if (_SelectedCompanyHeader != value)
    {
        _SelectedCompanyHeader = value;
        RaisePropertyChanged(nameof(SelectedCompanyHeader));
        _ = LoadProjects();
    }
}
following the advice from David Fowler:
AspNetCoreDiagnosticScenarios/AsyncGuidance.md at master · davidfowl/AspNetCoreDiagnosticScenarios · GitHub[^]

new Task(fn).Start() should generally be replaced with Task.Run(fn). But in this case, LoadProjects already returns a Task, so there's no need to create another one.

If the method fails, it will raise the TaskScheduler.UnobservedTaskException[^] event rather than terminating your process.

If you didn't assign the result to a discard, you'd get a IDE0058 warning.


NB: If possible, I'd also be inclined to update your RaisePropertyChanged method to use the CallerMemberName attribute, so that you wouldn't need to pass in the property name when you call the method from a property setter.
protected void RaisePropertyChanged([CallerMemberName] string propertyName = default) { ... }

...

public CompanyHeaderEntity SelectedCompanyHeader
{
    get { return _SelectedCompanyHeader; }
    set
    {
        if (_SelectedCompanyHeader != value)
        {
            _SelectedCompanyHeader = value;
            RaisePropertyChanged(); // <- The current property name will automatically be passed here.
            _ = LoadProjects();
        }
    }
}
Caller Information (C#) | Microsoft Docs[^]

If for some reason you can't do that, at least use nameof instead of strings. That way, if you use a refactoring tool to rename the property, the value passed to the RaisePropertyChanged method will be updated to match.
nameof expression - C# reference | Microsoft Docs[^]



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GeneralRe: 2 Async/Await Questions Pin
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QuestionHow to read/load a certificate stored in a JKS (Java key stores) file format, in .NET (C#) Pin
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QuestionNeed some tips... Sharing a collection of classes for display in a listbox? Pin
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