I want to create a Xamarin.Forms app where I have to login to a specific Azure DevOps environment/project.
To try out the Azure DevOps Service library I first created a Console App (.NET Framework 4.7.2) to login to the Azure DevOps environment/project. The following code was used for login process (+ extra code to validate the connection actualy works).
public void Login(string _userName, string _pwd)
{
ProjectHttpClient projectClient;
this.Credentials = new VssAadCredential(_userName, _pwd);
this.Connection = new VssConnection(new Uri(this.DevOpsPath), this.Credentials);
this.InitReferences(this.ProjectName);
projectClient = this.Connection.GetClient<ProjectHttpClient>();
this.ProjectReference = projectClient.GetProjects(null, top: 1).Result.Where(item => item.Name == this.ProjectName).FirstOrDefault();
}
When I use the same piece of code in the Xamarin.Forms App (.NET Standard 2.1) it no longer works and I get the following error when executing the last line:
One or more errors occurred. (Could not resolve type with token
0100008d from typeref (expected class
'Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContextIntegratedAuthExtensions'
in assembly 'Microsoft.IdentityModel.Clients.ActiveDirectory,
Version=3.19.4.11002, Culture=neutral,
PublicKeyToken=31bf3856ad364e35'))
When using the VssBasicCredential with a personal acces token, the code runs as expected. However I would prefer using the VssAadCredential and not the VssBasicCredential.
I'm not aware that the VssAadCredential is not supported in .NET Standard and can find no documentation relating to the issue.
Has anyone had a similar experience that might solve this problem or can anyone provide me with some documentation declaring that this cannot work as of yet?
Related
I am trying to display the SSRS report in a .Net Core 3.1 MVC application.
I tried to implement the approach mentioned in
https://alanjuden.com/2016/11/10/mvc-net-core-report-viewer/?unapproved=58532&moderation-hash=321d5350c96d2fcf83baa4c939bbdf53#comment-58532
public class ReportsController : AlanJuden.MvcReportViewer.ReportController
{
protected override ICredentials NetworkCredentials
{
get
{
//Custom Domain authentication (be sure to pull the info from a config file)
return new System.Net.NetworkCredential("username", "password");
//Default domain credentials (windows authentication)
//return System.Net.CredentialCache.DefaultNetworkCredentials;
}
}
protected override string ReportServerUrl
{
get
{
//You don't want to put the full API path here, just the path to the report server's ReportServer directory that it creates (you should be able to access this path from your browser:
return "https://YourReportServerUrl.com/ReportServer/ReportExecution2005.asmx";
}
}
public IActionResult ProcessReport()
{
var model = this.GetReportViewerModel(Request);
model.ReportPath = "reportPath";
return RedirectToAction("ReportViewer", model);
}}
but it is not working with the latest framework.
I am getting following error while running the project - Error screenshot
Any help is appreciated.
Thanks!
The same thing happened to me, in my case I needed to install the same package that tells you to install
Install-Package System.ServiceModel.Http -Version 4.1.0
or in the nuget look for the package System.ServiceModel.Http
I tried different workarounds with latest .NET Core including the one you mentioned from Alan Juden. However the easiest thing that worked for me is to create a plain .NET WebForms site using the Report Viewer control from Microsoft. It was still a lot of code but this is solid because the Report Viewer control has been around for many years.
In my case it is showing SSRS Report from Angular UI, but the same will work with MVC or any other Web UI because you will actually redirect/navigate to another url (WebForms aspx page).
More details here.
I have created a web API connected to azure sql server in .net core using visual studio for Mac đź’». Then I created a web app in azure and then published by project directly in visual studio for Mac to azure.
After I published I try to access the api using postman and chrome (URL/api/menu) but I got 500 server error which is generic and doesn’t tell me anything.
In visual studio for Mac I got the green light it said published and directly took me to the new url.
So, what do you guys thing is the problem.
This is my first time using azure so I didn’t change any setting or anything
Since many different problems can cause this error page, I can strongly recommend the following in order to determine the root cause quickly and easily, without struggling with Azure (or any server/platform for that matter) to get logs.
You can enable extremely helpful error messages at startup by setting the .UseSetting("detailedErrors", "true") and .CaptureStartupErrors(true) actions in your Program.cs file.
For ASP.NET CORE 2.1
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.CaptureStartupErrors(true)
.UseSetting("detailedErrors", "true")
.UseStartup<Startup>()
.Build();
}
Add these commands in your startup.cs class:
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
app.UseBrowserLink();
also enable stdoutLog in your web.config file
stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"
Error code 500 in web api,usually, means problems with a configuration in Startup.cs - the most common problems include an issue with DB itself, an issue with migrations (if you are using Code First approach), problems with appsettings.js.
Please refer to the log file in .\logs\stdout.
Hope it helps.
I'm having a lot of trouble getting a basic proof-of-concept working, in which I am accessing an Oracle DB (11g) through Azure Functions via Entity Framework (6.2).
Prerequisites:
ODT For Visual Studio 2017 is installed, as well as Azure Functions CLI/Core Tools. Everything mentioned below is done entirely via Visual Studio 2017, not through Azure portal.
Take 1:
Created a new project with the Azure Functions template.
Installed NuGet packages EntityFramework (6.2.0), Oracle.ManagedDataAccess (12.2.1100) and Oracle.ManagedDataAccess.EntityFramework (12.2.1100). Note: When installing NuGet packages in projects using the Azure Functions template, the packages are added under Dependencies -> NuGet, rather than under References.
Added ADO.NET Entity Data Model to project.
Problem: After setting my connection string, choosing Entity Framework 6.x is unavailable, with the following error message:
An Entity Framework database provider compatible with the latest
version of Entity Framework could not be found for your data
connection. If you have already installed a compatible provider,
ensure you have rebuilt your project before performing this action.
Otherwise, exit this wizard, install a comaptible provider, and
rebuild your project befre performing this action.
As the simplest of workarounds, I have tried to just go ahead with EF5, but it throws an exception while creating the DB model (after selecting the objects to include in model, including some stored procedures).
Take 2:
Created project and installed NuGet packages as above.
Created class library project to facilitate the Oracle interactions.
Installed the same NuGet packages as above in the class library project.
Added ADO.NET Entity Data Model to class library project and added some database objects to the database model. Also added custom constructor to the model for specific connection string, because managing connection strings in Azure Functions was a seperate set of headaches that I'll deal with later.
Added a simple wrapper method to the class library project that calls a stored procedure from the database model:
public static string NameByEmpNo(int empNo)
{
string result;
MyEntities entities = new MyEntities("metadata=res://*/MyEntities.csdl|res://*/MyEntities.ssdl|res://*/MyEntities.msl;provider=Oracle.ManagedDataAccess.Client;provider connection string='DATA SOURCE=127.0.0.1:1521/ORCL;PASSWORD=tiger;USER ID=SCOTT'");
ObjectParameter name = new ObjectParameter("o_empname", typeof(string));
entities.GET_EMP_NAME_PROC(empNo, name);
result = (string)name.Value;
return result;
}
Added reference to the class library in the Azure Functions project.
Added function that calls NameByEmpNo:
[FunctionName("GetNameByEmpNo")]
public static async Task<HttpResponseMessage> GetNameByEmpNo([HttpTrigger(AuthorizationLevel.Function, "get", Route = null)]HttpRequestMessage req, TraceWriter log)
{
int empNo = Int32.Parse(req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "empno", true) == 0)
.Value);
string empName = ScottAccess.NameByEmpNo(empNo);
return req.CreateResponse(HttpStatusCode.OK, "Employee name: " + empName);
}
Problem: At runtime, calling the function fails with this error
message:
Exception while executing function: GetNameByEmpNo -> The ADO.NET
provider with invariant name 'Oracle.ManagedDataAccess.Client' is
either not registered in the machine or application config file, or
could not be loaded. See the inner exception for details. -> Unable to
find the requested .Net Framework Data Provider. It may not be
installed.
Bonus info: My class library works perfectly when called through a console application. Also, my Azure Functions app works perfectly when calling functions that do not use my class library...
I am stumped. Has anyone got experience with getting this combination of techs working together and can offer some insight into where I'm going wrong / provide steps to get a basic connection working?
Entity Framework within Azure Functions defaults the providers to System.Data.SqlClient so SQL connections will work without any configuration changes, but that means you have to do something special for Oracle connections. The problem seems to come from the config values that the Oracle.ManagedDataAccess.Client library assumes are available within the App.Config or Web.Config file in the project, which are inserted whenever you install the Oracle.ManagedDataAcess.EntityFramework Nuget package. Azure Functions don't have config files, and I wasn't able to find any way to specify the Oracle provider in the settings json files.
I found a solution in this post
It suggests bypassing this mechanism and creating a DbConfiguration for Oracle, then using DbConfigurationType to tell the DbContext which configuration you're using.
public class OracleDbConfiguration : DbConfiguration
{
public OracleDbConfiguration()
{
SetDefaultConnectionFactory(new OracleConnectionFactory());
SetProviderServices("Oracle.ManagedDataAccess.Client", EFOracleProviderServices.Instance);
SetProviderFactory("Oracle.ManagedDataAccess.Client", new OracleClientFactory());
}
}
[DbConfigurationType(typeof(OracleDbConfiguration))]
public partial class MyEntities : IGISContext
{
//Expose Connection String Constructor
public MyEntities(string connectionString, int commandTimeoutInSeconds = 30) : base(connectionString)
{
this.Database.CommandTimeout = commandTimeoutInSeconds;
}
}
Note: I used EF 6 Database First to generate my EDMX; MyEntities here is a partial class for providing a constructor that takes in a connection string.
The oracle connection wil use the specified DbConfiguration class, and any SQL database connections will continue to work using the defaults.
My solution is using the Nuget Packages:
EntityFramework 6.2.0
Oracle.ManagedDataAccess 12.2.1100
Oracle.ManagedDataAccess.EntityFramework 12.2.1100
I'm trying to do authentication on my Android application using Xamarin.Auth. Some time ago, Google made the policy that you cannot do this in an embedded web view (for totally valid reasons).
I'm trying to open the account authentication page in a browser, but keep getting the embedded web view. I understand that isUsingNativeUI needs to be true in the following code:
_auth = new OAuth2Authenticator(clientId, string.Empty, scope,
new Uri(Constant.AuthorizeUrl),
new Uri(redirectUrl),
new Uri(Constant.AccessTokenUrl),
null,
isUsingNativeUI = true);
At every point in my application, this always equals true.
Elsewhere, I have code that redirects to what should be a browser:
var authenticator = Auth.GetAuthenticator();
Intent intent = authenticator.GetUI(this);
this.StartActivity(intent);
Regardless, I keep getting a dreaded 403 disallowed_useragent error whenever I try to run the project. Is there another element to this that I'm missing?
To my knowledge, setting auth.IsUsingNativeUI = true in the constructor should dictate that it must open in a browser. I've been following this example to try and debug with no success. I even pulled the guy's repo down to my machine and ran it - the Intent variable at the moment of redirection is almost identical.
Could there be something stupid that I'm missing? What else might be going wrong?
I realize this is an old question, but I had the same issue.
You have to install version 1.5.0.3 of the Xamarin.Auth Nuget package. The newest one (version 1.7.0 right now) doesn't work. You'll have to also install the PCLCrypto nuget package in order to get that version to work.
I'm dipping my toes into Windows Azure, and I'm running into something that has to be simple, but I just can't see it.
I have this small test to play with Azure queues:
public void CanPublishSillyLittleMessageOnQueue()
{
var queueClient = CloudStorageAccount.DevelopmentStorageAccount.CreateCloudQueueClient();
var testQueue = queueClient.GetQueueReference("testqueue1");
testQueue.CreateIfNotExist();
var message = new CloudQueueMessage("This is a test");
testQueue.AddMessage(message);
CloudQueueMessage received;
int sleepCount = 0;
while((received = testQueue.GetMessage()) == null)
{
++sleepCount;
Thread.Sleep(25);
}
testQueue.DeleteMessage(received);
Assert.Equal(message.AsString, received.AsString);
}
It sends the message just fine - I can see it in the SQL table. However, when it hits the "testQueue.DeleteMessage(received)" method, I get this:
TestCase 'AzureExploratory.PlayingWithQueues.CanPublishSillyLittleMessageOnQueue'
failed: System.ArgumentNullException : Value cannot be null.
Parameter name: str
at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.get_Result()
at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.ExecuteAndWait()
at Microsoft.WindowsAzure.StorageClient.TaskImplHelper.ExecuteImplWithRetry(Func`1 impl, RetryPolicy policy)
at Microsoft.WindowsAzure.StorageClient.CloudQueue.DeleteMessage(CloudQueueMessage message)
PlayingWithQueues.cs(75,0): at AzureExploratory.PlayingWithQueues.CanPublishSillyLittleMessageOnQueue()
which appears to be a failure somewhere down inside the guts of the Azure SDK.
I'm using VS 2010, .NET 4.0, the Azure SDK V1.2, 64-bit Win 7. The developer store service is running; I can see the messages go into the queue, I just can't delete them.
Anyone ever seen anything like this?
I figured out what's going on. The code in question was running in a xUnit test harness. Turns out that the xUnit runner doesn't set up an appdomain with a config file path by default. System.UriBuilder now hits the config file, so it blows up.
The workaround was to add an empty app.config to the test project. Now it works.
ARGH!