小编Miz*_*lla的帖子

[HttpPost]
public ActionResult Create(Users user)
{
    if (ModelState.IsValid)
    {
        db.Users.Add(user);
        db.SaveChanges();
        return RedirectToAction("Index");  
    }

    return View(user);
}

ModelState.IsValid总是假的.
所以它只是返回视图并且没有添加新记录..

编辑

用户:

public class User
{
    public int UserID { get; set; } 
    public string Name { get; set; } 
    [Display(Name = "Confirm Password")] [DataType(DataType.Password)] 
    public string ConfirmPassword { get; set; } 
    public string Designation { get; set; } 
    [Display(Name = "Date of Join")] [DataType(DataType.Date)] public DateTime DOJ { get; set; } 
    public string Email { get; set; } 
    [Display(Name …

您好我有以下代码从一个表中选择数据而不是在其他表中

var result1 = (from e in db.Users
               select e).ToList();
var result2 = (from e in db.Fi
               select e).ToList();
List<string> listString = (from e in result1
                           where !(from m in result2
                                   select m.UserID).Contains(e.UserID)
                           select e.UserName).ToList();

ViewBag.ddlUserId = listString;

我在listString中获得了值.但是在向viewbag添加listString时出错了.

Unable to cast object of type 'System.Collections.Generic.List`1[System.String]' to type 'System.Collections.Generic.IEnumerable`1[Main.Models.Admin.User]'.

我在我的Mvc4应用程序中实现了Elmah.我的web.config如下: -

<configuration>
  <configSections>
      <sectionGroup name="elmah">
          <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" />
          <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" />
          <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" />
          <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" />
      </sectionGroup>        
  </configSections>

    <elmah>
        <security allowRemoteAccess="1" />
        <errorLog type="Elmah.XmlFileErrorLog, Elmah" logPath="~/App_Data"/>
        <errorMail from="test@test.in" to="test1@test.in" subject="Elmah Report" async="true" smtpServer="mail.test.in" />            
    </elmah>

  <connectionStrings>
    <add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=aspnet-Mvcjquery-20130225111502;Integrated Security=SSPI" />
  </connectionStrings>   

    <system.web>
      <httpHandlers>
          <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />         
      </httpHandlers>

      <httpModules>
          <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
          <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah"/>

     </httpModules>        
  </system.web>

  <system.webServer> …