1 UpdateModel(x, Request.Form.AllKeys);

1 UpdateModel(x, new[] {"IDX", "Name"});

1     <%using (Html.Form("home", "about", FormMethod.Post)) {%>
2     <%=Html.TextBox("my.ID")%>
3     <%=Html.TextBox("my.Name")%>
4     <%=Html.SubmitButton()%>
5     <%} %>

        [AcceptVerbs("post")]
        public ActionResult About([ModelBinder(typeof(MyModelBinder))]MyModel my) {
            ViewData["Title"] =my.Name + my.ID;
            return View();
        }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Globalization;
 5 using System.Linq;
 6 using System.Web.Mvc;
 7 
 8 /// <summary>
 9 /// 这个类是根据Controller.UpdateModel方法更改而成
10 /// </summary>
11 public class MyModelBinder : IModelBinder{
12     #region IModelBinder 成员
13 
14     public object GetValue(ControllerContext controllerContext, string modelName, Type modelType,
15                            ModelStateDictionary modelState){
16         object model = Activator.CreateInstance(modelType); //将做为参数的类实例化了
17         IEnumerable<string> keys = modelType.GetProperties().Select(c => c.Name); //得到该对象的属性的名的字符串数组，这里的结果应该为["ID","Name"]
18         string objectPrefix = modelName; //这个就是,我的对象名叫my则会检查  name="my.ID" name="my.Name"的表单字段
19 
20         PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(model); //对象的属性的集合
21         var dictionary = new Dictionary<string, PropertyDescriptor>();
22         foreach (string str in keys){
23 //遍历属性的字符串集合即["ID","Name"]
24             if (!string.IsNullOrEmpty(str)){
25                 PropertyDescriptor descriptor = properties.Find(str, true);
26                 if (descriptor == null){
27                     throw new ArgumentException(
28                         string.Format(CultureInfo.CurrentUICulture, "无此属性{0},{1}", new object[]{model.GetType().FullName, str}),
29                         "modelName");
30                 }
31                 string str3 = string.IsNullOrEmpty(objectPrefix) ? str : (objectPrefix + "." + str); //将对象名与属性名拼接，如my.ID
32                 dictionary[str3] = descriptor;
33             }
34         }
35         foreach (var pair in dictionary){
36             string key = pair.Key;
37             PropertyDescriptor descriptor2 = pair.Value;
38             object obj2 = ModelBinders.GetBinder(descriptor2.PropertyType).GetValue(controllerContext, key,
39                                                                                     descriptor2.PropertyType, modelState);
40             if (obj2 != null){
41                 try{
42                     descriptor2.SetValue(model, obj2); //设置属性的值
43                     continue;
44                 }
45                 catch{
46                     //如果有使用验证Helepr则会显示在Html.ValidationSummary中
47                     string errorMessage = string.Format(CultureInfo.CurrentCulture, "验证失败{0}:{1}", new[]{obj2, descriptor2.Name});
48                     string attemptedValue = Convert.ToString(obj2, CultureInfo.CurrentCulture);
49                     modelState.AddModelError(key, attemptedValue, errorMessage);
50                     continue;
51                 }
52             }
53         }
54         return model; //最后 返回这个我们设置完属性的对象
55     }
56 
57     #endregion
58 }

1         [AcceptVerbs("post")]
2         public ActionResult About(MyModel my) {
3             ViewData["Title"] =my.Name + my.ID;
4             return View();
5         }