I want to write a login function in cshtml.cs that sends the user to an other cshtml page.
If the userdata were correct the function sends the user to the next page.
public void OnPost()
{
if (LoginCheck())
{
Message = "success";
//Login was a success. Go to the next page
}
else
{
Message = "failure";
//Login was a failure. Noting happens. exept the message
}
}
I found a solution that works. Maybe doesn´t look that great, but it works ;)
public IActionResult OnPost()
{
if (LoginCheck())
{
Message = "success";
//Login was a success. Go to the next page
return Redirect("/FileIwantTo");
}
else
{
Message = "failure";
//Login was a failure. Noting happens. exept the message
return Redirect("/FileI´mStaying");
}
}
Related
I am running dotnet core 2.* and as the title mentions I have trouble getting my try catch to work when calling from API. And before anyone comments I am also running middle-ware to catch any exceptions. It too doesn't perform as expected
Addinional Information:
The Two Classes are in different namespaces/projects
Queries.Authentication is static.
They are both in the same solution
Controller:
[AllowAnonymous]
[HttpPost]
public string Login([FromBody] AuthRequest req)
{
// See if the user exists
if (Authenticate(req.username, req.password))
{
try {
// Should Fail Below
UserDetails ud = Queries.Authentication.GetUser(req.username);
} catch (RetrievalException e){ }
catch (Exception e){ } // Exception Still Comes Through
}
}
Queries.Authentication.GetUser Code:
public static class Authentication {
public static UserDetails GetUser (string username)
{
// Some Code
if (details.success)
{
// Some Code
}
else
{
throw new RetrievalException(details.errorMessage); // This is not caught propperly
}
}
}
Retrieval Exception:
public class RetrievalException : Exception
{
public RetrievalException()
{
}
public RetrievalException(String message)
: base(message)
{
}
public RetrievalException(String message, Exception inner)
: base(message, inner)
{
}
}
EDIT: Adding Middleware Code Here as per request:
public class CustomExceptionFilter : IExceptionFilter
{
public void OnException(ExceptionContext context)
{
HttpStatusCode status = HttpStatusCode.InternalServerError;
String message = String.Empty;
var exceptionType = context.Exception.GetType();
if (exceptionType == typeof(UnauthorizedAccessException))
{
message = "Unauthorized Access";
status = HttpStatusCode.Unauthorized;
}
else if (exceptionType == typeof(NullReferenceException))
{
message = "Null Reference Exception";
status = HttpStatusCode.InternalServerError;
}
else if (exceptionType == typeof(NotImplementedException))
{
message = "A server error occurred.";
status = HttpStatusCode.NotImplemented;
}
else if (exceptionType == typeof(RSClientCore.RetrievalException))
{
message = " The User could not be found.";
status = HttpStatusCode.NotFound;
}
else
{
message = context.Exception.Message;
status = HttpStatusCode.NotFound;
}
context.ExceptionHandled = true;
HttpResponse response = context.HttpContext.Response;
response.StatusCode = (int)status;
response.ContentType = "application/json";
var err = "{\"message\":\"" + message + "\",\"code\" :\""+ (int)status + "\"}";
response.WriteAsync(err);
}
}
App Config:
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
} else
{
app.UseExceptionHandler();
}
...
}
Service Config:
public void ConfigureServices(IServiceCollection services)
{
// Add Model View Controller Support
services.AddMvc( config =>
config.Filters.Add(typeof (CustomExceptionFilter))
);
UPDATE: After playing around with it I noticed that even though my program throws the exception, if I press continue the API controller then handles it as if the exception was never thrown (as in it catches it and does what I want). So I turned off the break on Exception setting, this fixed it in debugger mode. However this the break doesn't seem to be an issue when I build/publish the program. This makes me think it is definitely a issue with visual studio itself rather than the code.
When you set ExceptionHandled to true that means you have handled the exception and there is kind of no error anymore. So try to set it to false.
context.ExceptionHandled = false;
I agree it looks a bit confusing, but should do the trick you need.
Relevant notes:
For those who deal with different MVC and API controller make sure you implemented appropriate IExceptionFilter as there are two of them - System.Web.Mvc.IExceptionFilter (for MVC) and System.Web.Http.Filters.IExceptionFilter (for API).
There is a nice article about Error Handling and ExceptionFilter Dependency Injection for ASP.NET Core APIs you could use as a guide for implementing exception filters.
Also have a look at documentation: Filters in ASP.NET Core (note selector above the left page menu to select ASP.NET Core 1.0, ASP.NET Core 1.1,ASP.NET Core 2.0, or ASP.NET Core 2.1 RC1). It has many important notes and explanations why it works as it does.
I am using libgdx and robovm.
I get an error when I try to submit the score to the leaderboard on GameCenter on iOS. I am able to show the leaderboard. This is the error I get:
*** Terminating app due to uncaught exception 'GKInvalidArgumentException', reason: 'A GKScore must specify a leaderboard.'
libc++abi.dylib: terminating with uncaught exception of type NSException
It is similar to this SO-post, but it is objective-c so I dont understand the answer.
This is my code for showing the leaderboard (this works)
public void getLeaderboardGPGS() {
// If player is not authenticated, do nothing
if (!GKLocalPlayer.getLocalPlayer().isAuthenticated()) {
return;
}
GKGameCenterViewController gameCenterView = new GKGameCenterViewController();
gameCenterView.setGameCenterDelegate(new GKGameCenterControllerDelegateAdapter() {
#Override
public void didFinish (GKGameCenterViewController gameCenterViewController) {
dismissViewControllerAndNotifyListener(gameCenterViewController, GKGameCenterViewControllerState.Leaderboards);
}
});
gameCenterView.setViewState(GKGameCenterViewControllerState.Leaderboards);
gameCenterView.setLeaderboardIdentifier(identifier);
keyWindow.getRootViewController().presentViewController(gameCenterView, true, null);
}
This is my code for submiting the score (this does not work)
public void submitScoreGPGS(int score, MyLeaderBoardCallback callback) {
// If player is not authenticated, do nothing
if (!GKLocalPlayer.getLocalPlayer().isAuthenticated()) {
//listener.scoreReportFailed(buildUnauthenticatedPlayerError());
Gdx.app.log("Gamecenter","Notlogedin");
return;
}
GKScore scoreReporter = new GKScore(identifier);
scoreReporter.setValue(score);
scoreReporter.setLeaderboardIdentifier(identifier);
//scoreReporter.setShouldSetDefaultLeaderboard(true);
//scoreReporter.setContext(0);
NSArray<GKScore> scores = new NSArray<GKScore>(scoreReporter);
Gdx.app.log("Gamecenter","Report socre");
GKScore.reportScores(scores, new VoidBlock1<NSError>() {
#Override
public void invoke (NSError error) {
if (error != null) {
Gdx.app.log("Gamecenter","scorereportfailed");
} else {
Gdx.app.log("Gamecenter","scorereportcompleted");
}
}
});
}
Anyone knows what the problem might be? I have tried googleing but there is little information about "robovm and gamekit/gamecenter".
The variable that contained the leaderboard id was garbage collected for some reason. Had to hard-code the string at scoreReporter.setLeaderboardIdentifier("my hard coded id"); . Weird....
I develop an Universal App that uses MVVM-Light. I call WebServices from the ViewModels, and I throw the exceptions encountered by the calls at the WebServices to the ViewModels: TimeOut, Wrong URL, Server Exception, ...
I have created a class "ExceptionsMsgHelper.cs" which centralizes the messages displayed for each of these exceptions through MessageDialog.
My HomePage is based on a Pivot that containing several datas: some WebServices are called asynchronously. I so meet a crash if I show an Exception in a MessageDialog through the class "ExceptionsMsgHelper.cs", whereas a previous Exception is also showed in another MessageDialog.
Here is a part of my original class:
public class ExceptionsMsgHelper
{
public async static void MsgboxWebserviceErrors(WebServiceErrorsException wseE, string errors)
{
Windows.UI.Popups.MessageDialog msgbox =
new Windows.UI.Popups.MessageDialog("The Websercice '" + wseE.WebService + "' has returned errors : \n" + errors,
"Unexpected data");
await msgbox.ShowAsync();
}
}
=> If I call twice the "msgbox.ShowAsync()", I get the "System.UnauthorizedAccessException" Exception: with message "Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"
I've so looked for solutions in order to fix it:
use a "Dispatcter", like it is recommended here (WinRT - MessageDialog.ShowAsync will throw UnauthorizedAccessException in my custom class)
The code is:
public class ExceptionsMsgHelper
{
public async static void MsgboxWebserviceErrors(WebServiceErrorsException wseE, string errors)
{
Windows.UI.Popups.MessageDialog msgbox =
new Windows.UI.Popups.MessageDialog("The Websercice '" + wseE.WebService + "' has returned errors : \n" + errors,
"Unexpected data");
CoreDispatcher dispatcher = CoreWindow.GetForCurrentThread().Dispatcher;
dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () =>
{
await msgbox.ShowAsync();
});
}
}
=> But I always meet the same exception.
use a "IAsyncOperation" command to close the previous MessageDialog, like recommended here (MessageDialog ShowAsync throws accessdenied exception on second dialog)
With this code:
public class ExceptionsMsgHelper
{
private static IAsyncOperation<IUICommand> messageDialogCommand = null;
public async static Task<bool> ShowDialog(MessageDialog dlg)
{
// Close the previous one out
if (messageDialogCommand != null)
{
messageDialogCommand.Cancel();
messageDialogCommand = null;
}
messageDialogCommand = dlg.ShowAsync();
await messageDialogCommand;
return true;
}
public async static void MsgboxWebserviceErrors(WebServiceErrorsException wseE, string errors)
{
Windows.UI.Popups.MessageDialog msgbox =
new Windows.UI.Popups.MessageDialog("The Websercice '" + wseE.WebService + "' has returned errors : \n" + errors,
"Unexpected data");
CoreDispatcher dispatcher = CoreWindow.GetForCurrentThread().Dispatcher;
dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () =>
{
await ShowDialog(msgbox);
});
}
}
=> But in this case too, I always get the same exception.
use an extension to queue up messagedialogs, like describing here (Multiple MessageDialog app crash)
The code is now:
public class ExceptionsMsgHelper
{
public async static void MsgboxWebserviceErrors(WebServiceErrorsException wseE, string errors)
{
Windows.UI.Popups.MessageDialog msgbox =
new Windows.UI.Popups.MessageDialog("The Websercice '" + wseE.WebService + "' has returned errors : \n" + errors,
"Unexpected data");
await MessageDialogExtensions.ShowAsyncQueue(msgbox);
}
}
public static class MessageDialogExtensions
{
private static TaskCompletionSource<MessageDialog> _currentDialogShowRequest;
public static async Task<IUICommand> ShowAsyncQueue(this MessageDialog dialog)
{
if (!Window.Current.Dispatcher.HasThreadAccess)
{
throw new InvalidOperationException("This method can only be invoked from UI thread.");
}
while (_currentDialogShowRequest != null)
{
await _currentDialogShowRequest.Task;
}
var request = _currentDialogShowRequest = new TaskCompletionSource<MessageDialog>();
var result = await dialog.ShowAsync();
_currentDialogShowRequest = null;
request.SetResult(dialog);
return result;
}
private static IAsyncOperation<IUICommand> messageDialogCommand = null;
public async static Task<bool> ShowDialog(this MessageDialog dlg)
{
// Close the previous one out
if (messageDialogCommand != null)
{
messageDialogCommand.Cancel();
messageDialogCommand = null;
}
messageDialogCommand = dlg.ShowAsync();
await messageDialogCommand;
return true;
}
#endregion
}
=> And this works for me.
But like says it's author, it's probably not the best solution:
Close existing dialog when you need to open a new one. This is the simplest option and possibly the best, although you risk cancelling a dialog that might be somehow important depending on what your dialogs are about.
Queue up dialogs so the old ones don't get dismissed, but the new ones show up after the old ones were dismissed. This one will make sure all dialogs are closed by the user, but that could be a problem if your app can somehow start showing hundreds of dialogs.
Only open a new one if there isn't one already displayed. Now this risks that a newer message is not shown, which sounds more problematic than the first option.
=> I would like to understand why I can't apply one the 2 first solutions that seems to be more adapted
Ofcourse you can't show 2 or more message dialog at the same time (windows phone limits). Moreover MesssageDialog on Windows Phone 8.1 has probably bug and can't be closed.
If closing previous dialog will be solution for you, try to use ContentDialog instead MessageDialog. Check my answer in this topic: Closing MessageDialog programatically in WP 8.1 RT
I think it solve your problem.
I am using Cimbalino navigation but the query param never gets set for me.
Main View Model
private readonly INavigationService navigationService = null;
public MainViewModel(INavigationService navigationService)
{
this.navigationService = navigationService;
NavigateToPg2Cmd = new RelayCommand(() => NaviagateToPg2());
NavigateToPg2WithParmsCmd = new RelayCommand(() => NaviagateToPg2WithParms());
}
private void NaviagateToPg2WithParms()
{
navigationService.NavigateTo(new Uri("/Views/SecondPg.xaml?parameter=1&parm2=2", UriKind.Relative));
}
When I look into NavigationService the Query Param dictionary is always 0.
static ViewModelLocator()
{
ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
if (ViewModelBase.IsInDesignModeStatic)
{
}
else
{
}
SimpleIoc.Default.Register<INavigationService, NavigationService>();
SimpleIoc.Default.Register<MainViewModel>();
SimpleIoc.Default.Register<SecondVM>();
}
Edit
Ok, I figured it out. When NavigateTo runs it still has not split the query string out yet so that's why it is zero.
I was also trying to do
private readonly INavigationService navigationService = null;
public SecondVM(INavigationService navigationService)
{
this.navigationService = navigationService;
if (IsInDesignMode)
{
Message = "Design Mode";
}
else
{
if (navigationService.QueryString.ContainsKey("paramter"))
{
Message = navigationService.QueryString["parameter"];
}
}
}
what did not work either as I guess it was too early as well. I really would like to pull it out at constructor time though, is there a way to do this?
I know it's not 100% the solution you are looking for, but you are true... You'll need to wait until the view is loaded before accessing the QueryString params in the ViewModel!
To do this, hook into the Loaded event of the view and pass it to a Command on the viewmodel!
If created a demo of this on my github to get you started: https://github.com/Depechie/NavigationParams
I am creating a test project where when clicking on a button system pops-up a window where I need to click OK but unable to do using the following code:
#Test
public void testAddNewUserMakeSuperUser() throws Exception {
driver.get("https://webqa.searshc.com/ssod/Admin/createUser.html");
driver.findElement(By.id("saveUserDetails")).click();
Alert alert = driver.switchTo().alert();
System.out.println(alert.getText());
alert.accept();
}
I have used
executeScript = ((JavascriptExecutor) driver).executeScript("window.confirm = function(msg) { return true; }");
also... but I am unable to run this.
You should test first if the Alert is present on the page before the click.
Like this:
public static bool IsAlertPresent(this IWebDriver driver)
{
try
{
driver.SwitchTo().Alert();
return true;
}
catch
{
return false;
}
}
And then:
public static void ConfirmAlert(this IWebDriver driver)
{
driver.SwitchTo().Alert().Accept();
}
This worked for me
executeScript = ((JavascriptExecutor) driver).executeScript("window.confirm = function(msg) { return true; }");
Please look the following link
http://www.thoughtworks-studios.com/twist/2.3/help/how_do_i_handle_popup_in_selenium2.html
I hope This will be helpful to you,