如何处理ASP.NET MVC Framework中的多个提交按钮？

Modified version of HttpParamActionAttribute method but with a bug fix for not causing an error on expired/invalid session postbacks. To see if this is a problem with your current site, open the your form in a window and just before you go to click Save or Publish, open a duplicate window, and logout. Now go back to your first window and try to submit your form using either button. For me I got an error so this change solves that problem for me. I omit a bunch of stuff for the sake of brevity but you should get the idea. The key parts are the inclusion of ActionName on the attribute and making sure the name passed in is the name of the View that shows the form

Attribute Class

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class HttpParamActionAttribute : ActionNameSelectorAttribute
{
    private readonly string actionName;

    public HttpParamActionAttribute(string actionName)
    {
        this.actionName = actionName;
    }

    public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo)
    {
        if (actionName.Equals(methodInfo.Name, StringComparison.InvariantCultureIgnoreCase))
            return true;

        if (!actionName.Equals(this.actionName, StringComparison.InvariantCultureIgnoreCase))
            return false;

        var request = controllerContext.RequestContext.HttpContext.Request;
        return request[methodInfo.Name] != null;
    }
}

Controller

[Authorize(Roles="CanAddContent")]
public ActionResult CreateContent(Guid contentOwnerId)
{
    var viewModel = new ContentViewModel
    {
        ContentOwnerId = contentOwnerId
        //populate rest of view model
    }
    return View("CreateContent", viewModel);
}

[Authorize(Roles="CanAddContent"), HttpPost, HttpParamAction("CreateContent"), ValidateAntiForgeryToken]
public ActionResult SaveDraft(ContentFormModel model)
{
    //Save as draft
    return RedirectToAction("CreateContent");
}

[Authorize(Roles="CanAddContent"), HttpPost, HttpParamAction("CreateContent"), ValidateAntiForgeryToken]
public ActionResult Publish(ContentFormModel model)
{
    //publish content
    return RedirectToAction("CreateContent");
}

View

@using (Ajax.BeginForm("CreateContent", "MyController", new { contentOwnerId = Model.ContentOwnerId }))
{
    @Html.AntiForgeryToken()
    @Html.HiddenFor(x => x.ContentOwnerId)

    <!-- Rest of your form controls -->
    <input name="SaveDraft" type="submit" value="SaveDraft" />
    <input name="Publish" type="submit" value="Publish" />
}

//model
    public class input_element
        {
         public string Btn { get; set; }
        }   

//views--submit btn can be input type also...
    @using (Html.BeginForm())
    {
            <button type="submit" name="btn" value="verify">
             Verify data</button>
            <button type="submit" name="btn" value="save">
             Save data</button>    
            <button type="submit" name="btn" value="redirect">
                 Redirect</button>
    }

//controller

    public ActionResult About()
        {
            ViewBag.Message = "Your app description page.";
            return View();
        }

        [HttpPost]
        public ActionResult About(input_element model)
        {
                if (model.Btn == "verify")
                {
                // the Verify button was clicked
                }
                else if (model.Btn == "save")
                {
                // the Save button was clicked
                } 
                else if (model.Btn == "redirect")
                {
                // the Redirect button was clicked
                } 
                return View();
        }

[HttpPost]
public ActionResult ConfirmMobile(string nameValueResend, string nameValueSubmit, RegisterModel model)
    {
        var button = nameValueResend ?? nameValueSubmit;
        if (button == "Resend")
        {

        }
        else
        {

        }
    }


    Razor file Content:
    @using (Html.BeginForm()
    {
        <div class="page registration-result-page">

            <div class="page-title">
                <h1> Confirm Mobile Number</h1>
            </div>

            <div class="result">
                @Html.EditorFor(model => model.VefificationCode)
                @Html.LabelFor(model => model.VefificationCode, new { })
                @Html.ValidationMessageFor(model => model.VefificationCode)
            </div>
            <div class="buttons">
                <button type="submit" class="btn" name="nameValueResend" value="Resend">
                    Resend
                </button>
                <button type="submit" class="btn" name="nameValueSubmit" value="Verify">
                    Submit
                </button>

            </div>
            </div>

    }

我参加聚会很晚了，但是这里...我的实现是从@mkozicki借来的，但是需要更少的硬编码字符串才能出错。 需要框架4.5+。本质上，控制器方法名称应该是路由的关键。

标记。按钮名称必须使用"action:[controllerMethodName]"

（请注意使用C＃6 nameof API，为要调用的控制器方法的名称提供特定于类型的引用。

<form>
    ... form fields ....
    <button name="action:@nameof(MyApp.Controllers.MyController.FundDeathStar)" type="submit" formmethod="post">Fund Death Star</button>
    <button name="action:@nameof(MyApp.Controllers.MyController.HireBoba)" type="submit" formmethod="post">Hire Boba Fett</button>
</form>

控制器：

namespace MyApp.Controllers
{
    class MyController
    {    
        [SubmitActionToThisMethod]
        public async Task<ActionResult> FundDeathStar(ImperialModel model)
        {
            await TrainStormTroopers();
            return View();
        }

        [SubmitActionToThisMethod]
        public async Task<ActionResult> HireBoba(ImperialModel model)
        {
            await RepairSlave1();
            return View();
        }
    }
}

属性魔术。注意CallerMemberName善良的使用。

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class SubmitActionToThisMethodAttribute : ActionNameSelectorAttribute
{        
    public SubmitActionToThisMethodAttribute([CallerMemberName]string ControllerMethodName = "")
    {
        controllerMethod = ControllerMethodName;
        actionFormat = string.Concat(actionConstant, ":", controllerMethod);
    }
    const string actionConstant = "action";
    readonly string actionFormat;
    readonly string controllerMethod;

    public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo)
    {
        var isValidName = false;
        var value = controllerContext.Controller.ValueProvider.GetValue(actionFormat);

        if (value != null)
        {
            controllerContext.Controller.ControllerContext.RouteData.Values[actionConstant] = controllerMethod;
            isValidName = true;
        }
        return isValidName;
    }
}

这是我编写的用于处理多个图像和/或文本按钮的扩展方法。

这是图像按钮的HTML：

<input id="btnJoin" name="Join" src="/content/images/buttons/btnJoin.png" 
       type="image">

或使用文本提交按钮：

<input type="submit" class="ui-button green" name="Submit_Join" value="Add to cart"  />
<input type="submit" class="ui-button red" name="Submit_Skip" value="Not today"  />

这是您使用来从控制器调用的扩展方法form.GetSubmitButtonName()。对于图像按钮，它将查找带有的表单参数.x（表示单击了图像按钮）并提取名称。对于常规input按钮，它将查找以开头的名称，Submit_然后从中提取命令。因为我正在抽象确定“命令”的逻辑，所以您可以在客户端上的图像+文本按钮之间切换，而无需更改服务器端代码。

public static class FormCollectionExtensions
{
    public static string GetSubmitButtonName(this FormCollection formCollection)
    {
        return GetSubmitButtonName(formCollection, true);
    }

    public static string GetSubmitButtonName(this FormCollection formCollection, bool throwOnError)
    {
        var imageButton = formCollection.Keys.OfType<string>().Where(x => x.EndsWith(".x")).SingleOrDefault();
        var textButton = formCollection.Keys.OfType<string>().Where(x => x.StartsWith("Submit_")).SingleOrDefault();

        if (textButton != null)
        {
            return textButton.Substring("Submit_".Length);
        }

        // we got something like AddToCart.x
        if (imageButton != null)
        {
            return imageButton.Substring(0, imageButton.Length - 2);
        }

        if (throwOnError)
        {
            throw new ApplicationException("No button found");
        }
        else
        {
            return null;
        }
    }
}

注意：对于文本按钮，您必须在名称前加上Submit_。我更喜欢这种方式，因为它意味着您可以更改文本（显示）值，而无需更改代码。与SELECT元素不同，INPUT按钮仅具有“值”，而没有单独的“文本”属性。我的按钮在不同的上下文中说的不同，但是映射到相同的“命令”。我更喜欢用这种方式提取名称，而不必为编写代码== "Add to cart"。

我没有足够的代表在正确的位置发表评论，但我整天都在此发表评论，所以想分享。

尝试实现“ MultipleButtonAttribute”解决方案时，ValueProvider.GetValue(keyValue)将错误地返回null。

原来，当我应该将System.Web.MVC版本3.0设置为4.0时（其他程序集是4.0）。我不知道为什么我的项目无法正确升级，并且我没有其他明显的问题。

因此，如果您ActionNameSelectorAttribute不工作，请检查。

这是我要使用的技术，在这里还没有看到。激发该解决方案的链接（由Saajid Ismail发布）为http://weblogs.asp.net/dfindley/archive/2009/05/31/asp-net-mvc-multiple-buttons-in-the-same-form .aspx）。它采用了Dylan Beattie的答案来进行本地化而没有任何问题。

在视图中：

<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<button name="button" value="send"><%: Resources.Messages.Send %></button>
<button name="button" value="cancel"><%: Resources.Messages.Cancel %></button>
<% Html.EndForm(); %>

在控制器中：

public class MyController : Controller 
{
    public ActionResult MyAction(string button)
    {
         switch(button)
         {
             case "send":
                 this.DoSend();
                 break;
             case "cancel":
                 this.DoCancel();
                 break;
         }
    }
}

大卫·芬德利（David Findley）在他的ASP.Net Weblog上写下了大约3种不同的选择。

阅读本文中具有相同形式的多个按钮，以查看他的解决方案以及每种解决方案的优缺点。恕我直言，他提供了一个非常优雅的解决方案，该方案利用了装饰动作的属性。

There are three ways by which you can solve the above issue

1. HTML way
2. Jquery way
3. “ActionNameSelectorAttribute” way

Below is a video which summarizes all the three approaches in a demonstrative way.

https://www.facebook.com/shivprasad.koirala/videos/vb.100002224977742/809335512483940

HTML way :-

In the HTML way we need to create two forms and place the “Submit” button inside each of the forms. And every form’s action will point to different / respective actions. You can see the below code the first form is posting to “Action1” and the second form will post to “Action2” depending on which “Submit” button is clicked.

<form action="Action1" method=post>
<input type=”submit” name=”Submit1”/>
</form>

<form action="Action2" method=post>
<input type=”submit” name=”Submit2”>
</form>

Ajax way :-

In case you are a Ajax lover this second option would excite you more. In the Ajax way we can create two different functions “Fun1” and “Fun1” , see the below code. These functions will make Ajax calls by using JQUERY or any other framework. Each of these functions are binded with the “Submit” button’s “OnClick” events. Each of these function make call to respective action names.

<Script language="javascript">
function Fun1()
{
$.post(“/Action1”,null,CallBack1);
}
function Fun2()
{
$.post(“/Action2”,null,CallBack2);
}
</Script>

<form action="/Action1" method=post>
<input type=submit name=sub1 onclick=”Fun2()”/>
</form>
<form action="/Action2" method=post>
<input type=submit name=sub2 onclick=”Fun1()”/>
</form>

Using “ActionNameSelectorAttribute”:-

This is a great and a clean option. The “ActionNameSelectorAttribute” is a simple attribute class where we can write decision making logic which will decide which action can be executed.

So the first thing is in HTML we need to put proper name’s to the submit buttons for identifying them on the server.

You can see we have put “Save” and “Delete” to the button names. Also you can notice in the action we have just put controller name “Customer” and not a particular action name. We expect the action name will be decide by “ActionNameSelectorAttribute”.

<form action=”Customer” method=post>
<input type=submit value="Save" name="Save" /> <br />
<input type=submit value="Delete" name="Delete"/>
</form>

So when the submit button is clicked , it first hits the “ActionNameSelector” attribute and then depending on which submit is fired it invokes the appropriate action.

So the first step is to create a class which inherits from “ActionNameSelectorAttribute” class. In this class we have created a simple property “Name”.

We also need to override the “IsValidName” function which returns true or flase. This function is where we write the logic whether an action has to be executed or not. So if this function returns true then the action is executed or else it is not.

public class SubmitButtonSelector : ActionNameSelectorAttribute
    {
        public string Name { get; set; }
        public override bool IsValidName(ControllerContext controllerContext, string actionName, System.Reflection.MethodInfo methodInfo)
        {
            // Try to find out if the name exists in the data sent from form
var value = controllerContext.Controller.ValueProvider.GetValue(Name);
            if (value != null)
            {
                return true;
            }
            return false;

        }
    }

The main heart of the above function is in the below code. The “ValueProvider” collection has all the data that has been posted from the form. So it first looks up the “Name” value and if its found in the HTTP request it returns true or else it returns false.

var value = controllerContext.Controller.ValueProvider.GetValue(Name);
if (value != null)
      {
        return true;
      }
      return false;

然后可以根据相应的动作修饰此属性类，并可以提供相应的“名称”值。因此，如果提交正在执行此操作，并且名称与HTML提交按钮名称匹配，则它将进一步执行该操作，否则将不执行该操作。

public class CustomerController : Controller
{
        [SubmitButtonSelector(Name="Save")]
        public ActionResult Save()
        {
            return Content("Save Called");
        }
        [SubmitButtonSelector(Name = "Delete")]
        public ActionResult Delete()
        {
            return Content("Delete Called");
        }
}

如果您没有使用HTML 5的限制，则可以将<button>标记与formactionAttribute一起使用：

<form action="demo_form.asp" method="get">
   First name: <input type="text" name="fname" /><br />
   Last name: <input type="text" name="lname" /><br />
   <button type="submit">Submit</button><br />
   <button type="submit" formaction="demo_admin.asp">Submit as admin</button>
</form>

参考：http : //www.w3schools.com/html5/att_button_formaction.asp

如果您的浏览器支持输入按钮的属性formaction（IE 10+，不确定其他浏览器），那么以下方法应该起作用：

@using (Html.BeginForm()){
    //put form inputs here

<input id="sendBtn" value="Send" type="submit" formaction="@Url.Action("Name Of Send Action")" />

<input id="cancelBtn" value="Cancel" type="submit" formaction="@Url.Action("Name of Cancel Action") />

}

以下是最适合我的方法：

<input type="submit" value="Delete" name="onDelete" />
<input type="submit" value="Save" name="onSave" />


public ActionResult Practice(MyModel model, string onSave, string onDelete)
{
    if (onDelete != null)
    {
        // Delete the object
        ...
        return EmptyResult();
    }

    // Save the object
    ...
    return EmptyResult();
}

我也遇到过这个“问题”，但是通过添加name属性找到了一个相当合乎逻辑的解决方案。我不记得其他语言有这个问题。

http://www.w3.org/TR/html401/interact/forms.html#h-17.13.2

• ...
• 如果一个表单包含多个提交按钮，则仅激活的提交按钮成功。
• ...

意味着以下代码value属性可以更改，本地化，国际化，而无需额外的代码检查强类型资源文件或常量。

<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<input type="submit" name="send" value="Send" />
<input type="submit" name="cancel" value="Cancel" />
<input type="submit" name="draft" value="Save as draft" />
<% Html.EndForm(); %>`

在接收端，您只需要检查您的任何已知提交类型是否不是 null

public ActionResult YourAction(YourModel model) {

    if(Request["send"] != null) {

        // we got a send

    }else if(Request["cancel"]) {

        // we got a cancel, but would you really want to post data for this?

    }else if(Request["draft"]) {

        // we got a draft

    }

}

我不喜欢ActionSelectName的地方是，控制器中的每个操作方法都会调用IsValidName。我不知道为什么这样工作。我喜欢一个解决方案，其中每个按钮根据其功能都有不同的名称，但是我不喜欢这样的事实，即操作方法中的参数必须与表单中的按钮一样多。我为所有按钮类型创建了一个枚举：

public enum ButtonType
{
    Submit,
    Cancel,
    Delete
}

我使用ActionFilter代替ActionSelectName：

public class MultipleButtonsEnumAttribute : ActionFilterAttribute
{
    public Type EnumType { get; set; }

    public MultipleButtonsEnumAttribute(Type enumType)
    {
        EnumType = enumType;
    }

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        foreach (var key in filterContext.HttpContext.Request.Form.AllKeys)
        {
            if (Enum.IsDefined(EnumType, key))
            {
                var pDesc = filterContext.ActionDescriptor.GetParameters()
                    .FirstOrDefault(x => x.ParameterType == EnumType);
                filterContext.ActionParameters[pDesc.ParameterName] = Enum.Parse(EnumType, key);
                break;
            }
        }
    }
}

筛选器将在表单数据中找到按钮名称，并且如果按钮名称与枚举中定义的任何按钮类型匹配，它将在操作参数中找到ButtonType参数：

[MultipleButtonsEnumAttribute(typeof(ButtonType))]
public ActionResult Manage(ButtonType buttonPressed, ManageViewModel model)
{
    if (button == ButtonType.Cancel)
    {
        return RedirectToAction("Index", "Home");
    }
    //and so on
    return View(model)
}

然后在视图中，我可以使用：

<input type="submit" value="Button Cancel" name="@ButtonType.Cancel" />
<input type="submit" value="Button Submit" name="@ButtonType.Submit" />

您可以这样写：

<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<input type="submit" name="button" value="Send" />
<input type="submit" name="button" value="Cancel" />
<% Html.EndForm(); %>

然后在页面中检查名称==“发送”或名称==“取消” ...

您应该能够为按钮命名并为其赋予一个值。然后将此名称作为参数映射到操作。或者，使用2个单独的动作链接或2个形式。

我建议有兴趣的人士看看Maarten Balliauw的解决方案。我觉得这很优雅。

万一链接消失，它将使用MultiButton应用于控制器动作的属性来指示该动作应与哪个按钮单击相关。

Just written a post about that: Multiple submit buttons with ASP.NET MVC:

Basically, instead of using ActionMethodSelectorAttribute, I am using ActionNameSelectorAttribute, which allows me to pretend the action name is whatever I want it to be. Fortunately, ActionNameSelectorAttribute does not just make me specify action name, instead I can choose whether the current action matches request.

So there is my class (btw I am not too fond of the name):

public class HttpParamActionAttribute : ActionNameSelectorAttribute {
    public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo) {
        if (actionName.Equals(methodInfo.Name, StringComparison.InvariantCultureIgnoreCase))
            return true;

        if (!actionName.Equals("Action", StringComparison.InvariantCultureIgnoreCase))
            return false;

        var request = controllerContext.RequestContext.HttpContext.Request;
        return request[methodInfo.Name] != null;
    }
} 

To use just define a form like this:

<% using (Html.BeginForm("Action", "Post")) { %>
  <!— …form fields… -->
  <input type="submit" name="saveDraft" value="Save Draft" />
  <input type="submit" name="publish" value="Publish" />
<% } %> 

and controller with two methods

public class PostController : Controller {
    [HttpParamAction]
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult SaveDraft(…) {
        //…
    }

    [HttpParamAction]
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Publish(…) {
        //…
    } 
}

As you see, the attribute does not require you to specify anything at all. Also, name of the buttons are translated directly to the method names. Additionally (I haven’t tried that) these should work as normal actions as well, so you can post to any of them directly.

它很短，很套房：

耶伦·多普（Jeroen Dop）回答了

<input type="submit" name="submitbutton1" value="submit1" />
<input type="submit" name="submitbutton2" value="submit2" />

并在代码背后这样做

 if( Request.Form["submitbutton1"] != null)
{
    // Code for function 1
}
else if(Request.Form["submitButton2"] != null )
{
       // code for function 2
}

祝好运。

Eilon建议您可以这样：

如果您有多个按钮，则可以通过为每个按钮命名来区分它们：

<input type="submit" name="SaveButton" value="Save data" />
<input type="submit" name="CancelButton" value="Cancel and go back to main page" />

在控制器操作方法中，可以添加以HTML输入标记名称命名的参数：

public ActionResult DoSomeStuff(string saveButton, string
cancelButton, ... other parameters ...)
{ ... }

如果将任何值发布到这些参数之一，则表示该按钮是被单击的按钮。Web浏览器将只发布了一个值，一个得到了点击该按钮。所有其他值将为null。

if (saveButton != null) { /* do save logic */ }
if (cancelButton != null) { /* do cancel logic */ }

我喜欢这种方法，因为它不依赖于提交按钮的value属性，该属性比分配的名称更容易更改，并且不需要启用javascript

请参阅：http： //forums.asp.net/p/1369617/2865166.aspx#2865166

您可以按照前面提到的操作检查名称，但是您可能会考虑这是否是一个好的设计。考虑动作的责任，不要将此设计与按钮名称之类的UI方面过多耦合，是一个好主意。因此，请考虑使用2种形式和2种动作：

<% Html.BeginForm("Send", "MyController", FormMethod.Post); %>
<input type="submit" name="button" value="Send" />
<% Html.EndForm(); %>

<% Html.BeginForm("Cancel", "MyController", FormMethod.Post); %>
<input type="submit" name="button" value="Cancel" />
<% Html.EndForm(); %>

另外，在“取消”的情况下，您通常只是不处理表单，而是转到新的URL。在这种情况下，您根本不需要提交表单，只需一个链接：

<%=Html.ActionLink("Cancel", "List", "MyController") %>

在很大程度上基于Maarten Balliauw的帖子和评论，这是一个针对多个提交按钮问题的基于属性的，几乎干净的解决方案。

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class MultipleButtonAttribute : ActionNameSelectorAttribute
{
    public string Name { get; set; }
    public string Argument { get; set; }

    public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo)
    {
        var isValidName = false;
        var keyValue = string.Format("{0}:{1}", Name, Argument);
        var value = controllerContext.Controller.ValueProvider.GetValue(keyValue);

        if (value != null)
        {
            controllerContext.Controller.ControllerContext.RouteData.Values[Name] = Argument;
            isValidName = true;
        }

        return isValidName;
    }
}

剃刀：

<form action="" method="post">
 <input type="submit" value="Save" name="action:Save" />
 <input type="submit" value="Cancel" name="action:Cancel" />
</form>

和控制器：

[HttpPost]
[MultipleButton(Name = "action", Argument = "Save")]
public ActionResult Save(MessageModel mm) { ... }

[HttpPost]
[MultipleButton(Name = "action", Argument = "Cancel")]
public ActionResult Cancel(MessageModel mm) { ... }

更新： 剃刀页面看起来可以提供相同的功能。对于新开发，它可能是更可取的。