Question

之前我使用我的MVC应用程序添加了3个角色。现在我无法添加新角色。当我调试时，我可以看到新角色Id，但角色名称为空。我该如何解决这个问题？

我现在有3个角色。用户，管理员，销售人员。现在我想添加帐户角色，无法添加。

CONTROLLER

// POST: /Roles/Create
[HttpPost]
public ActionResult Create(FormCollection collection)
{
    try
    {
        context.Roles.Add(new Microsoft.AspNet.Identity.EntityFramework.IdentityRole()
        {
            Name = collection["RoleName"]
        });
        context.SaveChanges();
        ViewBag.ResultMessage = "Role created successfully !";
        return RedirectToAction("Index");
    }
    catch
    {
        return View();
    }
}

CSHTML

@model Microsoft.AspNet.Identity.EntityFramework.IdentityRole

<div class="container body-content">
    @{
        ViewBag.Title = "Create";
    }

    <h2>Create Role</h2>
    @Html.ActionLink("List Roles", "Index") | @Html.ActionLink("Manage User Role", "ManageUserRoles")
    <hr />
    @using (Html.BeginForm())
    {
        @Html.AntiForgeryToken()
        @Html.ValidationSummary(true)

        <p>
            <div class="form-group">
                @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Name, new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => model.Name)
                </div>
            </div>
        </p>
        <br />
        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-primary" />
            </div>
        </div>
    }
</div>

Answer 1

您应该只在视图中使用viewModels，但是当您现在使用视图和对象时，您应该调整以下控制器以使用mvc roleManager（更容易）：

// POST: /Roles/Create
[HttpPost]
public ActionResult Create(IdentityRole role)
{
    try
    {
        var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new ApplicationDbContext()));
        roleManager.Create(role)

        context.SaveChanges();
        ViewBag.ResultMessage = "Role created successfully !";

        return RedirectToAction("Index");
    }
    catch
    {
        return View();
    }
}

无法在MVC5中添加新角色Microsoft.AspNet.Identity.EntityFramework.IdentityRole？

1 个答案: