Modelstate的数据验证 

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Index</title>
</head>
<body>
    <div>
      <% using (Html.BeginForm("Index","Home",FormMethod.Post))
         { %>
       
      <li><input type="text" name="name" id="name" /><%=Html.ValidationMessage("name")%>
</li>
      <li><input type="password" name="password" id="password" /></li>
     <li><input type="submit" value="提交" name="sub" id="sub" /></li>
     <%:ViewData["msg"] %>
      <%} %>
    </div>
</body>
</html>
利用ModelState来判断

 [AcceptVerbs("POST")]
        public ActionResult Index(Models.UserModel model)
        {
            if (model != null)
            {
                if (string.IsNullOrEmpty(model.Name))
                {
                    ModelState.AddModelError("Name", "名称不能为空");
                }
                else if (model.Name.Length > 20)
                {
                    ModelState.AddModelError("Name", "名称长度不能大于20");
                }
            }
            if (ModelState.IsValid)
            {
                //如果没错误
            }
            else
            {
                //如果有错误
               
            }
            return View(model);


            
        }

简单的验证就好了

posted @ 2010-10-09 10:13  二锅头  阅读(1136)  评论(0)    收藏  举报