ASP.NET MVC中在Action获取提交的表单数据方法总结 (4种方法，转载备忘)

有Index视图如下：

视图代码如下：

1. <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
2. <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
3. 主页
4. </asp:Content>
5. <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
6. <h2><%= Html.Encode(ViewData["Message"]) %></h2>
7. <br />
8. <br />
9. <% using(Html.BeginForm("HandleForm", "Home")) %>
10. <% { %>
11. Enter your name: <%= Html.TextBox("name") %>
12. <br /><br />
13. Select your favorite color:<br />
14. <%= Html.RadioButton("favColor", "Blue", true) %> Blue <br />
15. <%= Html.RadioButton("favColor", "Purple", false)%> Purple <br />
16. <%= Html.RadioButton("favColor", "Red", false)%> Red <br />
17. <%= Html.RadioButton("favColor", "Orange", false)%> Orange <br />
18. <%= Html.RadioButton("favColor", "Yellow", false)%> Yellow <br />
19. <%= Html.RadioButton("favColor", "Brown", false)%> Brown <br />
20. <%= Html.RadioButton("favColor", "Green", false)%> Green
21. <br /><br />
22. <%= Html.CheckBox("bookType") %> I read more fiction than non-fiction.<br />
23. <br /><br />
24. My favorite pet: <%= Html.DropDownList("pets") %>
25. <br /><br />
26. <input type="submit" value="Submit" />
27. <% } %>
28. </asp:Content>

<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    主页
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

    <h2><%= Html.Encode(ViewData["Message"]) %></h2>
    <br />
    <br />

    <% using(Html.BeginForm("HandleForm", "Home")) %>
    <% { %>
        Enter your name: <%= Html.TextBox("name") %>
        <br /><br />
        Select your favorite color:<br />
        <%= Html.RadioButton("favColor", "Blue", true) %> Blue <br />
        <%= Html.RadioButton("favColor", "Purple", false)%> Purple <br />
        <%= Html.RadioButton("favColor", "Red", false)%> Red <br />
        <%= Html.RadioButton("favColor", "Orange", false)%> Orange <br />
        <%= Html.RadioButton("favColor", "Yellow", false)%> Yellow <br />
        <%= Html.RadioButton("favColor", "Brown", false)%> Brown <br />
        <%= Html.RadioButton("favColor", "Green", false)%> Green
        <br /><br />
        <%= Html.CheckBox("bookType") %> I read more fiction than non-fiction.<br />
        <br /><br />
        My favorite pet: <%= Html.DropDownList("pets") %>
        <br /><br />
        <input type="submit" value="Submit" />
    <% } %>

</asp:Content>

如图填写表单数据：

分别使用不同的表单处理方法，对提交的表单数据在视图FormResults呈现。

提交表单对应的HomeController，包含以不同方法获取表单数据的代码，如下：

1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using System.Web;
5. using System.Web.Mvc;
6. namespace HtmlHelper.Controllers
7. {
8. [HandleError]
9. public class HomeController : Controller
10. {
11. public ActionResult Index()
12. {
13. ViewData["Message"] = "欢迎使用 ASP.NET MVC!";
14. //手动构造页面中下拉框的宠物数据
15. List<string> petList = new List<string>();
16. petList.Add("Dog");
17. petList.Add("Cat");
18. petList.Add("Hamster");
19. petList.Add("Parrot");
20. petList.Add("Gold fish");
21. petList.Add("Mountain lion");
22. petList.Add("Elephant");
23. ViewData["Pets"] = new SelectList(petList);
24. return View();
25. }
26. public ActionResult About()
27. {
28. return View();
29. }
30. /// <summary>
31. /// 处理表单提交数据，方法1:使用传统的Request请求取值
32. /// </summary>
33. /// <returns></returns>
34. public ActionResult HandleForm()
35. {
36. ViewData["name"] = Request["name"];
37. ViewData["favColor"] = Request["favColor"];
38. ViewData["bookType"] = Request["bookType"];
39. ViewData["pet"] = Request["pets"];
40. return View("FormResults");
41. }
42. /// <summary>
43. /// 处理表单提交数据，方法2:Action参数名与表单元素name值一一对应
44. /// </summary>
45. /// <param name="name"></param>
46. /// <param name="favColor"></param>
47. /// <param name="bookType"></param>
48. /// <param name="pets"></param>
49. /// <returns></returns>
50. //public ActionResult HandleForm(string name, string favColor, Boolean bookType, string pets)
51. //{
52. //    ViewData["name"] = name;
53. //    ViewData["favColor"] = favColor;
54. //    ViewData["bookType"] = bookType;
55. //    ViewData["pet"] = pets;
56. //    return View("FormResults");
57. //}
58. /// <summary>
59. /// 处理表单提交数据，方法3:从MVC封装的FormCollection容器中读取
60. /// </summary>
61. /// <param name="form"></param>
62. /// <returns></returns>
63. //public ActionResult HandleForm(FormCollection form)
64. //{
65. //    ViewData["name"] = form["name"];
66. //    ViewData["favColor"] = form["favColor"];
67. //    ViewData["bookType"] = form["bookType"];
68. //    ViewData["pet"] = form["pets"];
69. //    return View("FormResults");
70. //}
71. /// <summary>
72. /// 处理表单提交数据，方法4:使用实体作为Action参数传入，前提是提交的表单元素名称与实体属性名称一一对应
73. /// </summary>
74. /// <param name="request"></param>
75. /// <returns></returns>
76. //[HttpPost]
77. //public ActionResult HandleForm(InforModel infor)
78. //{
79. //    ViewData["name"] = infor.name;
80. //    ViewData["favColor"] = infor.favColor;
81. //    ViewData["bookType"] = infor.bookType;
82. //    ViewData["pet"] = infor.pets;
83. //    return View("FormResults");
84. //}
85. }
86. }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace HtmlHelper.Controllers
{
    [HandleError]
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            ViewData["Message"] = "欢迎使用 ASP.NET MVC!";

            //手动构造页面中下拉框的宠物数据
            List<string> petList = new List<string>();
            petList.Add("Dog");
            petList.Add("Cat");
            petList.Add("Hamster");
            petList.Add("Parrot");
            petList.Add("Gold fish");
            petList.Add("Mountain lion");
            petList.Add("Elephant");

            ViewData["Pets"] = new SelectList(petList);

            return View();
        }

        public ActionResult About()
        {
            return View();
        }

        /// <summary>
        /// 处理表单提交数据，方法1:使用传统的Request请求取值
        /// </summary>
        /// <returns></returns>
        public ActionResult HandleForm()
        {
            ViewData["name"] = Request["name"];
            ViewData["favColor"] = Request["favColor"];
            ViewData["bookType"] = Request["bookType"];
            ViewData["pet"] = Request["pets"];

            return View("FormResults");
        }

        /// <summary>
        /// 处理表单提交数据，方法2:Action参数名与表单元素name值一一对应
        /// </summary>
        /// <param name="name"></param>
        /// <param name="favColor"></param>
        /// <param name="bookType"></param>
        /// <param name="pets"></param>
        /// <returns></returns>
        //public ActionResult HandleForm(string name, string favColor, Boolean bookType, string pets)
        //{
        //    ViewData["name"] = name;
        //    ViewData["favColor"] = favColor;
        //    ViewData["bookType"] = bookType;
        //    ViewData["pet"] = pets;

        //    return View("FormResults");
        //}

        /// <summary>
        /// 处理表单提交数据，方法3:从MVC封装的FormCollection容器中读取
        /// </summary>
        /// <param name="form"></param>
        /// <returns></returns>
        //public ActionResult HandleForm(FormCollection form)
        //{
        //    ViewData["name"] = form["name"];
        //    ViewData["favColor"] = form["favColor"];
        //    ViewData["bookType"] = form["bookType"];
        //    ViewData["pet"] = form["pets"];

        //    return View("FormResults");
        //}

        /// <summary>
        /// 处理表单提交数据，方法4:使用实体作为Action参数传入，前提是提交的表单元素名称与实体属性名称一一对应
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        //[HttpPost]
        //public ActionResult HandleForm(InforModel infor)
        //{
        //    ViewData["name"] = infor.name;
        //    ViewData["favColor"] = infor.favColor;
        //    ViewData["bookType"] = infor.bookType;
        //    ViewData["pet"] = infor.pets;

        //    return View("FormResults");
        //}

    }
}

在FormResults视图显示ViewData的数据，如图所示：