我正在按照本教程构建具有多个提交按钮的表单： http://www.dotnet-tricks.com/Tutorial/mvc/cM1X161112-Handling-multiple-submit-buttons-on-the-same-form---MVC-Razor.html
但它没有工作...... 我有 2 个按钮：“登录”、“发送”
我希望我的“发送”按钮通过电子邮件将密码发送给用户。 （在表“aspnetuser”中，我有属性“Email”）。
我该怎么做？
【问题讨论】：
标签： c# asp.net asp.net-mvc asp.net-mvc-3 asp.net-mvc-4
听起来您正在尝试做两件事，让用户登录或找回密码。最佳做法是将它们分成两种不同的形式。
您的第一个表单将用于登录用户，并将用户名/密码发布到您的成员控制器上的登录操作：
@using (Html.BeginForm("Login", "Members"))
{
<div>
@Html.Label("username")
</div>
<div>
@Html.Label("password")
</div>
<div>
<input type="submit" value="Login" />
</div>
}
您的第二个表单适用于忘记密码并将用户名发布到您的 Members 控制器上的 ForgotPassword 操作的人：
@using (Html.BeginForm("ForgotPassword", "Members"))
{
<div>
@Html.Label("username")
</div>
<div>
<input type="submit" value="Reset Password" />
</div>
}
附带说明，您不应以纯文本形式向用户发送密码。相反，您应该允许他们重置密码。这里有一个更好的解释为什么和如何：
http://www.asp.net/web-forms/tutorials/security/admin/recovering-and-changing-passwords-cs
祝你好运:)
【讨论】：
正如@timothyclifford 所提到的，您正试图以一种形式做两件事。在某些情况下优先这样做，但对于 99% 的情况，链接到第二个表单是可行的方法。
不久前，我确实实现了一个动作调用程序，它可以模拟您正在寻找的功能。它允许您在表单值中指定要执行的操作。
它允许您使用有助于选择过程的属性标记控制器操作。
我刚刚将一个工作示例上传到 github：https://github.com/xenolightning/asp-mvc-formaction
FormActionInvoker.cs
/// <summary>
/// Searches the controller for the correct action. Prioritizes FormAction attributed Actions first.
/// Then searches via Method Code
/// </summary>
public class FormActionActionInvoker : AsyncControllerActionInvoker
{
protected override ActionDescriptor FindAction(ControllerContext controllerContext,
ControllerDescriptor controllerDescriptor, string actionName)
{
foreach (var mi in controllerDescriptor.ControllerType.GetMethods())
{
//Searches for the form action attribute first. And if it is present, then it looks
//checks to see if the request is valid. This hpens BEFORE it checks the action name
//which now means ActionName becomes obsolete
var fa =
mi.GetCustomAttributes(false).FirstOrDefault(x => x is FormActionAttribute) as FormActionAttribute;
if (fa == null)
continue;
if (FormActionAttribute.GetAction(controllerContext) != null &&
fa.IsValidForRequest(controllerContext, mi))
return new ReflectedActionDescriptor(mi, actionName, controllerDescriptor);
}
ActionDescriptor ad = base.FindAction(controllerContext, controllerDescriptor, actionName);
var rad = ad as ReflectedActionDescriptor;
if (rad == null)
return ad;
//Here we have to check that the form action attibute isn't in required mode. If it is
//and the form-action is null then we should return null
var formA =
rad.MethodInfo.GetCustomAttributes(false).FirstOrDefault(x => x is FormActionAttribute) as
FormActionAttribute;
if (formA != null && FormActionAttribute.GetAction(controllerContext) == null &&
formA.Mode == FormActionMode.Required)
return null;
return rad;
}
}
FormActionAttribute.cs
/// <summary>
/// When Required the action cannot be invoked unless the form has
/// the required form-action value
/// </summary>
public enum FormActionMode
{
Required,
Normal
}
public class FormActionAttribute : ActionMethodSelectorAttribute
{
public const string HTTP_FORM_NAME = "form-action";
public FormActionAttribute(params string[] values)
: this(FormActionMode.Required, values)
{
}
/// <summary>
/// Constructor to specify the FormActionMode
/// </summary>
/// <param name="mode">
/// Specify Normal to allow invocation of the action with out the matching form action. Defaults to
/// Required
/// </param>
/// <param name="values"></param>
public FormActionAttribute(FormActionMode mode, params string[] values)
{
Values = values;
Mode = mode;
}
public string[] Values
{
get;
private set;
}
public FormActionMode Mode
{
get;
private set;
}
public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo)
{
string action = GetAction(controllerContext);
if (string.IsNullOrEmpty(action))
return true;
return Values.Any(x => x.Equals(action, StringComparison.CurrentCultureIgnoreCase)) ||
methodInfo.Name.Equals(action, StringComparison.CurrentCultureIgnoreCase);
}
/// <summary>
/// Returns the form action from the current context. Returns null if there is no action
/// </summary>
/// <param name="controllerContext"></param>
/// <returns>Null if there is no action</returns>
internal static string GetAction(ControllerContext controllerContext)
{
string action = controllerContext.HttpContext.Request.Params[HTTP_FORM_NAME];
if (string.IsNullOrEmpty(action))
return null;
//Stops errors on multiple value submissions
//this will choose the first value in the form
if (action.IndexOf(",") > -1)
return action.Split(',')[0];
return action;
}
}
HomeController.cs
public class HomeController : Controller
{
protected override IActionInvoker CreateActionInvoker()
{
return new FormActionActionInvoker();
}
public ActionResult Index()
{
return View();
}
[FormAction]
public ActionResult Login(LoginModel model)
{
return View("Login", model);
}
[FormAction("Forgot")]
public ActionResult DoesntMatterWhatThisIs(LoginModel model)
{
return View("Forgot", model);
}
[FormAction(FormActionMode.Normal)]
public ActionResult Three(LoginModel model)
{
return View("Three", model);
}
}
Index.cshtml
<h2>A Multi Action Form:</h2>
@using (Html.BeginForm("Index", "Home", FormMethod.Post, new { @class = "form-horizontal" }))
{
<div class="form-group">
<label for="@Html.IdFor(x => x.Username)" class="col-sm-2 control-label">Username</label>
<div class="col-sm-10">
@Html.TextBoxFor(x => x.Username, new { @class = "form-control" })
</div>
</div>
<div class="form-group">
<label for="@Html.IdFor(x => x.Password)" class="col-sm-2 control-label">Password</label>
<div class="col-sm-10">
@Html.PasswordFor(x => x.Password, new { @class = "form-control" })
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button class="btn btn-primary" name="form-action" value="Login">Login</button>
<button class="btn btn-primary" name="form-action" value="Forgot">Forgot Password</button>
<button class="btn btn-primary" name="form-action" value="Three">Do Three</button>
</div>
</div>
}
【讨论】：