WebOct 7, 2024 · In order to handle this on your model itself, you could likely want to use a [RemoteValidate] attribute which would allow you to add the appropriate custom logic to check your database to see if a user already exists. WebTo pass error to the view we can use ModelState.AddModelError method (if the error is Model field specific) or simply ViewBag or ViewData can also be used. Passing error …

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The reason it is not working is the ViewData, which includes the validation messages, is lost when you execute the RedirectToAction. There are a couple of options for a solution. 1. Keep either persist the ViewData across the RedirectToActionand then restore it. 2. Only persist the ModelState and then merge it with … See more I initially made the assumption that you wanted to redirect to the home page (HomeController action Index) based on your call to return … See more In most scenarios this works just fine but could cause problems if your redirected to action (in this case Index on the HomeController) has its own ViewDatathat it … See more This is would be my recommended approach because you define how you want this to happen once on a custom ActionFilterattribute and then apply where … See more WebAddModelError (String, String) Adds the specified error message to the errors collection for the model-state dictionary that is associated with the specified key. C# public void … boy\u0027s size chart

Adding errors to model state and returning bad request within …

http://duoduokou.com/csharp/38782591763054407407.html WebMar 16, 2015 · The first parameter to the AddModelError () method is the name of the property that the error applies to. In this case, we set it to LastName. You could also set it to nothing (or a fake name) if you just want it to appear in the ValidationSummary and not in a ValidationMessage. Now the error will be displayed on the page: Summary http://duoduokou.com/csharp/35626450726440921808.html gym iphone