RuntimeBinderException: Cannot perform runtime binding on a null reference after login

Question

I have not been able to show the object created in the view, I give it the object but it appears null. I do not understand what is failing me, I have seen videos and it shows them the data in the view.

UserModel

namespace WebApplicationCleverHome.Models
{

    public class UserModel
    {

        public string Username { get; set; }
        public string Password { get; set; }


    }
}

Controller:

public IActionResult Welcome()
        {
            var data = DatabaseHandler.Run();
             
            foreach (var row in data)
            {
                ViewBag.UserModel = new UserModel
                {
                    Username = row.Username,
                    Password = row.Password
                };
            }

            return View();
        }

Welcome view:

<html>
<head>
   <title></title>
</head>
<body>
    <div>
        Username: @ViewBag.UserModel.Username
    </div>
    <div>
        Password: @ViewBag.UserModel.Password
    </div>
</body>
</html>

RuntimeBinderException: Cannot perform runtime binding on a null reference CallSite.Target(Closure , CallSite , object ) System.Dynamic.UpdateDelegates.UpdateAndExecute1<T0, TRet>(CallSite site, T0 arg0) AspNetCore.Views_Login_Welcome.b__8_1() in Welcome.cshtml + Username: @ViewBag.UserModel.Username Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperExecutionContext.SetOutputContentAsync() AspNetCore.Views_Login_Welcome.ExecuteAsync() Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, bool invokeViewStarts) Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable statusCode) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable statusCode) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ActionContext actionContext, IView view, ViewDataDictionary viewData, ITempDataDictionary tempData, string contentType, Nullable statusCode) Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result) Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|29_0<TFilter, TFilterAsync>(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<TFilter, TFilterAsync>(ref State next, ref Scope scope, ref object state, ref bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters() Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted) Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync() Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

AspNetCore.Views_Login_Welcome.ExecuteAsync()

Where does it say null? Can you post the full error you got? — j3st, Jun 13 '21 at 05:58
@j3st that error appears to me when the view is not the first one seen on the page. The error appears to me when I see that page after login. — Arya, Jun 13 '21 at 07:36

RuntimeBinderException: Cannot perform runtime binding on a null reference after login

0 Answers0