Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'. in ASP.NET MVC application

Question

I was trying to delete an individual row from jQuery data-table based on the userID by making the AJAX call from my jQuery and then calling my action method DisableUser(int userID). When I'm redirected to the view, I get an error.

Here is my jQuery code:

$('#usersList').on('click', 'button[id^="delete_"]', function () {
    var userId = this.id.replace("delete_", "");
    $.ajax({
        type: 'POST',
        url:"@Html.Action("DisableUser","Admin")",
        data: { UserID: userId },
        success: function (response) {
            // Handle success response if needed
            console.log('User deleted successfully');
        },
        error: function (error) {
            // Handle error response if needed
            console.error('Error deleting user', error);
        }
    });
});

#userList is the id of the jQuery DataTable.

Here is my action method in my AdminController :

[HttpPost]
public ActionResult DisableUser(int UserID)
{
    if (UserID != 0 && UserID > 0)
    {
        int result = _helper.DisableUser(UserID);

        switch (result)
        {
            case 1:
                TempData["SaveMessage"] = "User disabled successfully";
                break;

            case -1:
                TempData["SaveMessage"] = "Error disabling user";
                break;

            default:
                TempData["SaveMessage"] = "Unknown error";
                break;
        };
    }

    var users = RetrieveUserList();

    return View("AllUsersData", users);
}

RetrieveUserList() is fetching the data and will be sent in JSON format. It is bound to my User model class.

AllUsersData is the JSON format view for jQuery DataTable.

When I'm redirected to the view, I get this error:

System.Web.HttpException: 'Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.

on this Line :

url:"@Html.Action("DisableUser", "Admin")",

This is followed by 2 inner exceptions:

HttpException: Execution of the child request failed. Please examine the InnerException for more information

HttpException: A public action method 'DisableUser' was not found on controller 'SiteAdministrator1._1._0.Controllers.AdminController'

What is the main issue I am facing here - any idea ?

Answer 1

It is necessary to use @Url.Action() instead of @Html.Action() to generate the correct URL.

When you are using the @Html.Action() here the MVC Razor engine is trying to find the DisableUser() action method with the [HttpGet] attribute and after not finding it throws the HttpException: A public action method 'DisableUser' was not found on controller.