Embed Power BI dashboard in ASP.Net core

Hi, 

The above suggestion from Eric_Zang won't work for Asp .Net Core as the UserPasswordCredentials is not supported in .NET Core. See: https://github.com/AzureAD/azure-activedirectory-library-for-dotnet/issues/482

I came across the same issues recently. My work-around was to use make a native REST call to the Azure AD for a token. I was pointed to this approach here: https://github.com/Microsoft/PowerBI-CSharp/issues/116

My solution is as follows:

Replace the following from Eric_Zang's example

var credential = new UserPasswordCredential(Username, Password);

// Authenticate using created credentials
var authenticationContext = new AuthenticationContext(AuthorityUrl);
var authenticationResult = await authenticationContext.AcquireTokenAsync(ResourceUrl, ClientId, credential);

with:

var authenticationResult = await AuthenticateAsync();

private static async Task<OAuthResult> AuthenticateAsync()
{
    var oauthEndpoint = new Uri(AuthorityUrl);

    using (var client = new HttpClient())
    {
        var result = await client.PostAsync(oauthEndpoint, new FormUrlEncodedContent(new[]
        {
            new KeyValuePair<string, string>("resource", ResourceUrl),
            new KeyValuePair<string, string>("client_id", ClientId),
            new KeyValuePair<string, string>("grant_type", "password"),
            new KeyValuePair<string, string>("username", Username),
            new KeyValuePair<string, string>("password", Password),
            new KeyValuePair<string, string>("scope", "openid"),
        }));

        var content = await result.Content.ReadAsStringAsync();
        return JsonConvert.DeserializeObject<OAuthResult>(content);
    }
}

class OAuthResult
{
    [JsonProperty("token_type")]
    public string TokenType { get; set; }
    [JsonProperty("scope")]
    public string Scope { get; set; }
    [JsonProperty("experies_in")]
    public int ExpiresIn { get; set; }
    [JsonProperty("ext_experies_in")]
    public int ExtExpiresIn { get; set; }
    [JsonProperty("experies_on")]
    public int ExpiresOn { get; set; }
    [JsonProperty("not_before")] 
    public int NotBefore { get; set; }
    [JsonProperty("resource")]
    public Uri Resource { get; set; }
    [JsonProperty("access_token")]
    public string AccessToken { get; set; }
    [JsonProperty("refresh_token")]
    public string RefreshToken { get; set; }
}

I understand that using the OAuth Password grant was removed from ADAL for .NET Core to strongly discourage transporting and saving user credentials.

I would like very much for a recommended approach for using PowerBI Embedded in as Asp .Net Core app.

Hope this helps.

Jeremy