使用asp中的html按钮标签将数据插入数据库。净mvc

Question

当我输入值时，发送错误无法找到资源

错误： '/'应用程序中的服务器错误。

如何解决这个问题 控制器

public ActionResult Registration_()
            {
                Registration Registration = new Registration();
                return View();
            }
            [HttpPost]
            [ValidateAntiForgeryToken]
            public ActionResult Registration_(Registration reg)
            {
                if (ModelState.IsValid)
                {
                    DB.Registrations.Add(reg);
                    DB.SaveChanges();
                }
                return RedirectToAction("Index", "Home");
            } 

视图（错误在视图中）

@using (Html.BeginForm())
    {
        @Html.AntiForgeryToken()
                <div class="col-md-6 account">

                    <h3>Login</h3>
                    <label for="">Username or email address *</label>
                    <div class="form-group">
                        @Html.EditorFor(model => model.RegEmail, new { htmlAttributes = new { @class = "form-control", placeholder = "Ex: Name" } })
                    </div>
                    <label for="">Password *</label>
                    <div class="form-group">
                        @Html.EditorFor(model => model.Passwords, new { htmlAttributes = new { @class = "form-control", placeholder = "Ex: Name" } })
                    </div>
                    <button>Login</button>&emsp;&emsp;&emsp;&emsp;&emsp;
                    <input type="checkbox" id="rememberme" value="forever"><span>Remember me</span>
                    <br /><br />
                    <a href="#">Forgot Password</a>

                </div>
                <div class="col-md-6 account">

                    <h3>Register</h3>
                    <label for=""> Email address *</label>
                    <div class="form-group">
                        @Html.EditorFor(model => model.RegEmail, new { htmlAttributes = new { @class = "form-control", placeholder = "Ex: Name" } })
                    </div>
                    <label for="">Password *</label>
                    <div class="form-group">
                        @Html.EditorFor(model => model.Passwords, new { htmlAttributes = new { @class = "form-control", placeholder = "Ex: Name" } })
                    </div>
                    <label for="">Register As *</label>
                    <div class="form-group">
                        @Html.DropDownList("dropRoles", new List<SelectListItem>()
                   {
                       new SelectListItem() { Text= "Register As", Selected = true },
                       new SelectListItem() { Text= "Employer", Value = "true" },
                       new SelectListItem() { Text= "Employee", Value = "false" }
                   })
                        @*<select class="form-control">
            <option value="">Employer </option>
            <option value="">Candidate </option>
        </select>*@     
                    </div>

                    <button>SignUp/Register</button>
                </div>
    }

我认为当我提交或注册时，他就没有办法了。 无论任何人都可以解释并解决它？ 我将非常感激。