DefaultModelBinder Implementation does not populate the model - ASP.NET MVC 2
I have a very simple implementation of the DefaultModelBinder, I need it to fire some custom validation.
public class MyViewModelBinder : DefaultModelBinder
{
public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
ModelStateDictionary modelState = bindingContext.ModelState;
var model = (MyViewModel)base.BindModel(controllerContext, bindingContext);
var result = ValidationFactory.ForObject<MyViewModel>().Validate(model);
CustomValidation(result, modelState);
return model;
}
}
MyViewModel is a public sealed class. The model binder is registered in the Global.asax this way:
ModelBinders.Binders.Add(typeof(MyViewModel), new MyViewModelBinder());
The problem is that the model is never populated! But the MVC default model binder (I remove the registration in global.asax) works fine.
This is the view HTML:
<table>
<tr>
<td><label for="Name">Name</label></td>
<td><input id="Name" name="Name" type="text" value="" /></td>
</tr>
<tr>
<td><label for="Code">Code</label></td>
<td><input id="Code" name=开发者_JAVA技巧"Code" type="text" value="" /></td>
</tr>
</table> </div>
Every field matches a property of the model.
From the information you provided I am unable to reproduce the problem. Here's what I did.
View model:
public sealed class MyViewModel
{
public string Name { get; set; }
public string Code { get; set; }
}
Controller:
public class HomeController : Controller
{
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult Index(MyViewModel model)
{
// at this stage the model is populated perfectly fine
return View();
}
}
Index View:
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<% using (Html.BeginForm()) { %>
<table>
<tr>
<td><label for="Name">Name</label></td>
<td><input id="Name" name="Name" type="text" value="" /></td>
</tr>
<tr>
<td><label for="Code">Code</label></td>
<td><input id="Code" name="Code" type="text" value="" /></td>
</tr>
</table>
<input type="submit" value="OK" />
<% } %>
</body>
</html>
Model binder:
public class MyViewModelBinder : DefaultModelBinder
{
public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
var model = (MyViewModel)base.BindModel(controllerContext, bindingContext);
// at this stage the model is populated perfectly fine
return model;
}
}
So now the question is, how does your code differs than mine and what is it in those CustomValidation and Validate methods?
加载中,请稍侯......
精彩评论