CODEWITHSUNDEEP
c#asp.netazure-ad-graph-api
user1394231
user1394231

Reputation: 21

Having a problem getting Microsoft Graph call to work within a .net web application

The following Code works within a console application.

public Boolean Graph_IsMemberOfGroup(string Parm_AzureUserID, string Parm_GroupID) {
        Boolean Lcl_ReturnValue = false;
        Task<string> Lcl_Response = GraphPriv_IsMemberOfGroup(Parm_AzureUserID, Parm_GroupID);
        if (Lcl_Response.Result != null) {
            Lcl_ReturnValue = Lcl_Response.Result.Contains(Parm_GroupID);
        }//end if
        return (Lcl_ReturnValue);
    }

    private async Task<string> GraphPriv_IsMemberOfGroup(string Parm_AzureUserID, string Parm_GroupID) {
        string Lcl_Returnvalue = null;
        var Lcl_Uri = "https://graph.windows.net/CleMetroSchools.onmicrosoft.com/users/" + Parm_AzureUserID.Trim() + "/checkMemberGroups?api-version=1.6";
        string Lcl_RequestBody = @"{""groupIds"": [""" + Parm_GroupID.Trim() + @"""]}";
        Global_HttpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Global_Token.Result);
        HttpResponseMessage Lcl_PostResult = await Global_HttpClient.PostAsync(Lcl_Uri, new StringContent(Lcl_RequestBody, Encoding.UTF8, "application/json"));
        if (Lcl_PostResult.Content != null) {
            Lcl_Returnvalue = await Lcl_PostResult.Content.ReadAsStringAsync();
        }//end if

        return Lcl_Returnvalue;
    }

The call I use is 

if (Graph_IsMemberOfGroup(CurrentUser,Group)){

The problem I am having is that when I Use the same code in a plain (not MVC) ASP.net web application. The system does not wait for GraphPriv_IsMemberOfGroup to completed before it tries to process the if (Lcl_Response.Result != null) {

Anything I have tried so far with waits either will not compile or waits forever. I have been searching for several days and all I have managed to do is travel deeper down the rabbit hole of confusion.

Upvotes: 0

Views: 1001

Answers (1)

Marc LaFleur
Marc LaFleur

Reputation: 33094

You're misapplying the async/await model here. You shouldn't be looking for a Task<string>, you should be looking for string from an awaited method:

public async Task<Boolean> Graph_IsMemberOfGroup(string Parm_AzureUserID, string Parm_GroupID) {
    Boolean Lcl_ReturnValue = false;
    string Lcl_Response = await GraphPriv_IsMemberOfGroup(Parm_AzureUserID, Parm_GroupID);
    return Lcl_Response.Result.Contains(Parm_GroupID);
}

An async method returns a value wrapped in a Task<>, The await keyword tells the code to wait for the method to return and unwrap the response. So if an async method returns Task<string> then you would call that method using string s = await method().

Upvotes: 2

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