Question

我正在尝试使用表单向数据库添加一些数据。

我已经有很少的数据并且设法让编辑工作，但是添加了我的问题。

这是我编辑数据库中数据的编辑代码：

   [HttpPost]
    public ActionResult Save(M2Portal.Areas.Admin.Models.Users.Roles roleForm)
        {
            try
        {
            if (ModelState.IsValid)
            {
                if (Mode == "Add")
                {  

                   ****This is where my add code goes*******
               }
                else
                {
                    var role = Srvctx.Roles.FirstOrDefault(w => w.RoleID == roleForm.RoleId);
                    role.RoleName = roleForm.RoleName;
                    role.RoleDescription = roleForm.RoleDescription;
                    Srvctx.SubmitChanges();
                }

                return RedirectToAction("RoleManagement");
            }

           return RedirectToAction("RoleManagement");
        }
        catch (Exception e)
        {
           return RedirectToAction("RoleManagement");
        }

}

这是模型的代码：

这是为了添加。

   public Roles()
    {
        Mode = "Add";
        RoleId = 0;
        RoleDescription = "";
        RoleName = "";
        CustomerBlacklist = new List<vw_RoleCustomerBlacklist>();
    }

这适用于编辑：有效。

    public Roles(int roleId)
    {
        Mode = "Edit";
        //RoleId = roleId;
        RoleId = roleId;
        RoleName = _m2Sctx.Roles.Where(s => s.RoleID == RoleId).Select(c => c.RoleName).FirstOrDefault();
        RoleDescription = _m2Sctx.Roles.Where(s => s.RoleID == RoleId).Select(c => c.RoleDescription).FirstOrDefault();
        CustomerBlacklist = _m2Sctx.vw_RoleCustomerBlacklists.Where(s => s.RoleId == roleId).ToList();
        CustName = CustName;


    }

所以现在我正在使用添加功能，它遇到了问题。

在表单中添加新数据......任何想法：

   if (Mode == "Add")
                {  

                   ****This is where my add code goes*******
               }

你可以看到我的编辑是如何设置的，但是为了添加它完全不同，并且有很难对它进行罚款......

Answer 1

尝试以下代码：

 if (ModelState.IsValid)
        {
            if (roleForm.RoleId == 0)
            {  

               var role = new Role()
               {
                  RoleName = roleForm.RoleName,
                  RoleDescription = roleForm.RoleDescription
               };



Srvctx.Roles.InsertOnSubmit(role);   
            Srvctx.SubmitChanges();
            }
            else
            {
                var role = Srvctx.Roles.FirstOrDefault(w => w.RoleID == roleForm.RoleId);
                role.RoleName = roleForm.RoleName;
                role.RoleDescription = roleForm.RoleDescription;
                Srvctx.SubmitChanges();
            }

            return RedirectToAction("RoleManagement");
        }

Answer 2

var newRole = new Role {
    RoleName = roleForm.RoleName,
    RoleDescription = roleForm.RoleDescription
};

Srvctx.Roles.InsertOnSubmit(newRole);

假设你的角色＆＃34;实体类称为Role。此外，您还可以填充CustomerBlacklist，如果它是＆＃34; Role＆＃34;的一部分。类。

Answer 3

用于编辑模型而不是

public Roles(int roleId)
    {
        Mode = "Edit";
        //RoleId = roleId;
        RoleId = roleId;
        RoleName = _m2Sctx.Roles.Where(s => s.RoleID == RoleId).Select(c => c.RoleName).FirstOrDefault();
        RoleDescription = _m2Sctx.Roles.Where(s => s.RoleID == RoleId).Select(c => c.RoleDescription).FirstOrDefault();
        CustomerBlacklist = _m2Sctx.vw_RoleCustomerBlacklists.Where(s => s.RoleId == roleId).ToList();
        CustName = CustName;


    }

创建一个基于roleId返回Role的单个对象的方法：

    public M2Portal.Areas.Admin.Models.Users.Roles Roles(int roleId)
        {
            var roleDBEntity = _m2Sctx.Roles.FirstOrDefault(s => s.RoleID == RoleId);

    var roleModelEntity = new M2Portal.Areas.Admin.Models.Users.Roles(){
        RoleId = roleDBEntity.RoleId,
        RoleName = roleDBEntity.RoleName,
        RoleDescription = roleDBEntity.RoleDescriptio
        CustomerBlacklist = roleDBENtity.CustomerBlacklist // Assuming there's relation between Role and CustomerBlackList table
};
    return roleModelEntity;
        }

使用MVC 4将数据添加到数据库

3 个答案: