我正在使用linq to sql执行CRUD操作。但是当点击编辑，详细信息或删除它给我错误，即“参数字典包含非可空类型'System.Int32'参数'id'的空条目'方法'System.Web.Mvc.ActionResult编辑（Int32） ''in'CRUD_using_LinQ_to_SQL_in_MVC.Controllers.OTDController'。可选参数必须是引用类型，可空类型，或者声明为可选参数。“ 我检查了解决方案，发现在运行应用程序url时没有得到ID参数。但我不明白我的代码应该改变什么..你能不能帮助我......
我的控制器代码：
using System;
命名空间CRUD_using_LinQ_to_SQL_in_MVC.Controllers { 公共类OTDController：控制器 {
private IOTddataRepository repository;
public OTDController()
: this(new OtdDataRepository())
{
}
public OTDController(IOTddataRepository _repository)
{
repository = _repository;
}
//-----------------------Index--------------------------
public ActionResult Index()
{
var otddata = repository.Getallotddata();
return View(otddata);
}
//-----------------------Details--------------------------
public ActionResult Details(int id)
{
OtdModelClass otdmodel = repository.Getotddatabysrno(id);
return View(otdmodel);
}
//-----------------------Create--------------------------
public ActionResult Create()
{
return View(new OtdModelClass());
}
[HttpPost]
public ActionResult Create(OtdModelClass otdmodel)
{
try
{
if (ModelState.IsValid)
{
repository.Insertotddata(otdmodel);
return RedirectToAction("Index");
}
}
catch (DataException)
{
ModelState.AddModelError("", "Problem in Data Saving");
}
return View(otdmodel);
}
//-----------------------EDIT--------------------------
public ActionResult Edit(int id)
{
OtdModelClass otdmodel = repository.Getotddatabysrno(id);
return View(otdmodel);
}
[HttpPost]
public ActionResult Edit(OtdModelClass otdclass)
{
try
{
if (ModelState.IsValid)
{
repository.Updateotddata(otdclass);
return RedirectToAction("Index");
}
}
catch (DataException)
{
ModelState.AddModelError("", "Problem in editing and Updating data");
}
return View(otdclass);
}
//-----------------------Delete--------------------------
public ActionResult Delete(int id, bool? savechangeserror)
{
if (savechangeserror.GetValueOrDefault())
{
ViewBag.ErrorMessage = "Problem in Deleting";
}
OtdModelClass otdmodel = repository.Getotddatabysrno(id);
return View(otdmodel);
}
[HttpPost, ActionName("Delete")]
public ActionResult DeleteConfirmed(int id)
{
try
{
OtdModelClass otdmodel = repository.Getotddatabysrno(id);
repository.Deleteotddata(id);
}
catch (DataException)
{
return RedirectToAction("Delete", new System.Web.Routing.RouteValueDictionary {
{"id",id},
{"SaveChangesError",true}});
}
return RedirectToAction("Index");
}
}
}
我的OTD课程代码：
public class OtdDataRepository : IOTddataRepository
{
private MVCLoginMasterLogDataClassesDataContext otdcontextobj;
public OtdDataRepository()
{
otdcontextobj = new MVCLoginMasterLogDataClassesDataContext();
}
public IEnumerable<OtdModelClass> Getallotddata()
{
IList<OtdModelClass> otddatalist = new List<OtdModelClass>();
var myselectallquery = from otduser in otdcontextobj.tbl_MVC_Login_Master_Logs select otduser;
var otd = myselectallquery.ToList();
foreach (var otddata in otd)
{
otddatalist.Add(new OtdModelClass()
{
Srno=Convert.ToInt32(otddata.Srno),
MemberCode = otddata.MemberCode,
LoginID = otddata.LoginID,
OTDPassword = otddata.OTDPassword,
BBSID = otddata.BBSID,
IPAddress = otddata.IPAddress,
ServerType = otddata.ServerType,
OTDStatus = otddata.OTDStatus,
RemoteIP = otddata.RemoteIP,
RemotePort = otddata.RemotePort,
AllowDownload = otddata.AllowDownload,
OTDTimeStamp = otddata.OTDTimeStamp,
MemberType = otddata.MemberType,
EQ = otddata.EQ,
EQD = otddata.EQD,
BFX = otddata.BFX,
SLB = otddata.SLB,
Others = otddata.Others
});
}
return otddatalist;
}
public OtdModelClass Getotddatabysrno(int id)
{
var getotddataquery = from otduser in otdcontextobj.tbl_MVC_Login_Master_Logs
where otduser.Srno == id
select otduser;
var otddata = getotddataquery.FirstOrDefault();
var otdmodel = new OtdModelClass()
{
Srno = Convert.ToInt32(otddata.Srno),
MemberCode = otddata.MemberCode,
LoginID = otddata.LoginID,
OTDPassword = otddata.OTDPassword,
BBSID = otddata.BBSID,
IPAddress = otddata.IPAddress,
ServerType = otddata.ServerType,
OTDStatus = otddata.OTDStatus,
RemoteIP = otddata.RemoteIP,
RemotePort = otddata.RemotePort,
AllowDownload = otddata.AllowDownload,
OTDTimeStamp = otddata.OTDTimeStamp,
MemberType = otddata.MemberType,
EQ = otddata.EQ,
EQD = otddata.EQD,
BFX = otddata.BFX,
SLB = otddata.SLB,
Others = otddata.Others
};
return otdmodel;
}
public void Insertotddata(OtdModelClass otdmodel_obj)
{
var empdata = new tbl_MVC_Login_Master_Log()
{
Srno = Convert.ToInt32(otdmodel_obj.Srno),
MemberCode = otdmodel_obj.MemberCode,
LoginID = otdmodel_obj.LoginID,
OTDPassword = otdmodel_obj.OTDPassword,
BBSID = otdmodel_obj.BBSID,
IPAddress = otdmodel_obj.IPAddress,
ServerType = otdmodel_obj.ServerType,
OTDStatus = otdmodel_obj.OTDStatus,
RemoteIP = otdmodel_obj.RemoteIP,
RemotePort = otdmodel_obj.RemotePort,
AllowDownload = otdmodel_obj.AllowDownload,
OTDTimeStamp = otdmodel_obj.OTDTimeStamp,
MemberType = otdmodel_obj.MemberType,
EQ = otdmodel_obj.EQ,
EQD = otdmodel_obj.EQD,
BFX = otdmodel_obj.BFX,
SLB = otdmodel_obj.SLB,
Others = otdmodel_obj.Others
};
otdcontextobj.tbl_MVC_Login_Master_Logs.InsertOnSubmit(empdata);
otdcontextobj.SubmitChanges();
}
public void Deleteotddata(int id)
{
tbl_MVC_Login_Master_Log otd_deletelog = otdcontextobj.tbl_MVC_Login_Master_Logs.Where(otduser => otduser.Srno == id).SingleOrDefault();
otdcontextobj.tbl_MVC_Login_Master_Logs.DeleteOnSubmit(otd_deletelog);
otdcontextobj.SubmitChanges();
}
public void Updateotddata(OtdModelClass otdmodel_obj)
{
tbl_MVC_Login_Master_Log otd_updatelog = otdcontextobj.tbl_MVC_Login_Master_Logs.Where(otduser=>otduser.Srno==otdmodel_obj.Srno).SingleOrDefault();
otd_updatelog.Srno = otdmodel_obj.Srno;
otd_updatelog.MemberCode = otdmodel_obj.MemberCode;
otd_updatelog.LoginID = otdmodel_obj.LoginID;
otd_updatelog.OTDPassword = otdmodel_obj.OTDPassword;
otd_updatelog.BBSID = otdmodel_obj.BBSID;
otd_updatelog.IPAddress = otdmodel_obj.IPAddress;
otd_updatelog.ServerType = otdmodel_obj.ServerType;
otd_updatelog.OTDStatus = otdmodel_obj.OTDStatus;
otd_updatelog.RemoteIP = otdmodel_obj.RemoteIP;
otd_updatelog.RemotePort = otdmodel_obj.RemotePort;
otd_updatelog.AllowDownload = otdmodel_obj.AllowDownload;
otd_updatelog.OTDTimeStamp = otdmodel_obj.OTDTimeStamp;
otd_updatelog.MemberType = otdmodel_obj.MemberType;
otd_updatelog.EQ = otdmodel_obj.EQ;
otd_updatelog.EQD = otdmodel_obj.EQD;
otd_updatelog.BFX = otdmodel_obj.BFX;
otd_updatelog.SLB = otdmodel_obj.SLB;
otd_updatelog.Others = otdmodel_obj.Others;
otdcontextobj.SubmitChanges();
}
}
你能帮帮我吗......
答案 0 :(得分：2)
框架告诉您，您点击以调用Edit和Delete操作方法的链接未提供操作方法期望的名为id的int参数找到提交数据中的某个位置。这通常在URL，查询字符串或提交的变量中提供。
如果这还不足以让您发现问题，请特别发布您的视图代码与链接相关的部分。