C#

pkfox wrote:

It must be the UI thread in Winforms

this.GetAccessToken().GetAwaiter().GetResult(); // Blocks the UI thread

this.Result = await this.App.AcquireTokenForClient(this.ResourceIds).ExecuteAsync().ConfigureAwait(false);

private void ButtonClick(object sender, EventArgs e)
{
    // Some code...
    this.GetAccessToken().GetAwaiter().GetResult();
    // Some more code...
}

private async void ButtonClick(object sender, EventArgs e)
{
    // Some code...
    await this.GetAccessToken();
    // Some more code
}

private void ButtonClick(object sender, EventArgs e)
{
    _ = SomeMethodAsync();
}

private async Task SomeMethodAsync()
{
    // Some code...
    await this.GetAccessToken();
    // Some more code
}

class SomeClass
{
    private async Task GetAccessToken() { ... }
    
    public async Task DoSomething()
    {
        // Code to run in this class before getting the access token here...
        
        await GetAccessToken();
        
        // Code to run in this class after getting the access token here...
    }
}

class YourForm
{
    private SomeClass _someClass;
    
    private void FormLoad(object sender, EventArgs e)
    {
        _someClass = new SomeClass();
        _ = DoSomethingInTheForm();
    }
    
    private async Task DoSomethingInTheForm()
    {
        // Code to run in the form before getting the access token here...
        
        await _someClass.DoSomething();
        
        // Code to run in the form after getting the access token here...
    }
}

@model int

@model string

return View(100);

return View("Some string");

return View(myStringVariable)