我想在保存后返回页面列表中的同一页面。但现在保存后它将返回到第1页而不返回第2页，或3..etc - 该项目是我选择的项目。
我这样试试：
if (SaveDbChanges())
{
// Record an audit trail event for an updated product.
{
ATEvent atEvent = AuditTrailHelper.NewEvent(ATEventType.ProductUpdated, HttpContext, db.Schema, entry.Product);
atEvent.StringArg = entry.Product.Name;
ATEventLogger.Current.LogEvent(atEvent);
}
AddDelayedNotification(Resources.Entity.Environment.ItemSavedMessage, Notification.NotificationType.Success);
return RedirectToAction("Index", new { id = entry.Product.Id });
}
所以它必须返回索引视图，但在这种情况下返回第2页。但它可以追溯到索引视图，但接着是第1页。
谢谢
我这样试试：
索引视图：
<a href="@Resources.Action.Navigation.JSVoid, new { page = ViewBag.CurrentPage }" class="sfs-actionbutton btn btn-primary disabled"><i class="fa fa-fw fa-edit"></i> @Resources.Action.Navigation.Edit </a>
和索引方法（帖子）：
[HttpPost]
[ValidateAntiForgeryToken]
[ValidateInput(false)]
public ActionResult Edit(EditProductModel entry, int page)
{
entry.Product.ModificationDate = DateTime.UtcNow;
if (ModelState.IsValid)
{
db.Entry(entry.Product).State = EntityState.Modified;
db.Entry(entry.Product).Property(model => model.Guid).IsModified = false;
db.Entry(entry.Product).Property(model => model.CreationDate).IsModified = false;
db.Entry(entry.Product).Property(model => model.IsProduction).IsModified = false;
entry.Product.IsProduction = StateHelper.IsTestMode() ? false : true;
HandleProductSelections(entry.Product);
SerializeAuthenticationSettings(entry);
SerializePaymentSettings(entry);
SerializeConnectors(entry);
SerializePrefillMappings(entry);
if (SaveDbChanges()) {
// Record an audit trail event for an updated product.
{
ATEvent atEvent = AuditTrailHelper.NewEvent(ATEventType.ProductUpdated, HttpContext, db.Schema, entry.Product);
atEvent.StringArg = entry.Product.Name;
ATEventLogger.Current.LogEvent(atEvent);
}
AddDelayedNotification(Resources.Entity.Environment.ItemSavedMessage, Notification.NotificationType.Success);
//return RedirectToAction("Index", new { id = entry.Product.Id });
//return RedirectToAction("Index", HttpContext.Request.UrlReferrer.AbsoluteUri);
//return Redirect(HttpContext.Request.UrlReferrer.AbsoluteUri);
//return Redirect(Request.UrlReferrer.ToString());
return RedirectToAction("Index", new { page = page });
}
}
AddDelayedNotification(Resources.Entity.Environment.ItemNotSavedError, Notification.NotificationType.Error);
return Edit(entry.Product.Id,2,2);
}
并获得：
public ActionResult Edit(int? id, int ID, int page)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Product product = db.Products.Find(id);
if (product == null)
{
throw new HttpException((int) HttpStatusCode.NotFound, null);
}
SetCreateEditProductLists(product, customerSchema);
EditProductModel editModel = new EditProductModel();
editModel.Product = product;
editModel.Db = db;
//editModel.AuthenticationProviders = AuthenticationProviders.GetProviders(customerSchema);
//editModel.PaymentProviders = PaymentProviders.GetProviders(customerSchema);
//editModel.ConnectorProviders = ConnectorProviders.GetProviders(customerSchema);
DeserializeAuthenticationSettings(editModel);
DeserializePaymentSettings(editModel);
DeserializeConnectors(editModel);
DeserializePrefillMappings(editModel);
ViewBag.Model = editModel;
ViewBag.CurrentPage = page;
return View(editModel);
}
但如果我这样做：
<a href="@Url.Action("Edit", new { page = ViewBag.CurrentPage }) " class="btn btn-primary"><i class="fa fa-fw fa-plus"></i> @Resources.Entity.Product.EditProduct</a>
我收到此消息：
The parameters dictionary contains a null entry for parameter 'page' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Edit(System.Nullable`1[System.Int32], Int32, Int32)' in ''. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter.
Parameter name: parameters
我的编辑现在看起来像这样：
[HttpGet]
public ActionResult Edit(int? id, int page)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Product product = db.Products.Find(id);
if (product == null)
{
throw new HttpException((int) HttpStatusCode.NotFound, null);
}
SetCreateEditProductLists(product, customerSchema);
EditProductModel editModel = new EditProductModel();
editModel.Product = product;
editModel.Db = db;
//editModel.AuthenticationProviders = AuthenticationProviders.GetProviders(customerSchema);
//editModel.PaymentProviders = PaymentProviders.GetProviders(customerSchema);
//editModel.ConnectorProviders = ConnectorProviders.GetProviders(customerSchema);
DeserializeAuthenticationSettings(editModel);
DeserializePaymentSettings(editModel);
DeserializeConnectors(editModel);
DeserializePrefillMappings(editModel);
ViewBag.Model = editModel;
ViewBag.CurrentPage = page;
return View(editModel);
}
和我的帖子一样：
[HttpPost]
[ValidateAntiForgeryToken]
[ValidateInput(false)]
public ActionResult Edit(EditProductModel entry, int page)
{
entry.Product.ModificationDate = DateTime.UtcNow;
if (ModelState.IsValid)
{
db.Entry(entry.Product).State = EntityState.Modified;
db.Entry(entry.Product).Property(model => model.Guid).IsModified = false;
db.Entry(entry.Product).Property(model => model.CreationDate).IsModified = false;
db.Entry(entry.Product).Property(model => model.IsProduction).IsModified = false;
entry.Product.IsProduction = StateHelper.IsTestMode() ? false : true;
HandleProductSelections(entry.Product);
SerializeAuthenticationSettings(entry);
SerializePaymentSettings(entry);
SerializeConnectors(entry);
SerializePrefillMappings(entry);
if (SaveDbChanges()) {
// Record an audit trail event for an updated product.
{
ATEvent atEvent = AuditTrailHelper.NewEvent(ATEventType.ProductUpdated, HttpContext, db.Schema, entry.Product);
atEvent.StringArg = entry.Product.Name;
ATEventLogger.Current.LogEvent(atEvent);
}
AddDelayedNotification(Resources.Entity.Environment.ItemSavedMessage, Notification.NotificationType.Success);
return RedirectToAction("Index", new { page = page });
}
}
AddDelayedNotification(Resources.Entity.Environment.ItemNotSavedError, Notification.NotificationType.Error);
return Edit(entry.Product.Id,92);
}
和我的编辑视图一样：
@using (Html.BeginForm(new { page = ViewBag.CurrentPage })) {
@Html.AntiForgeryToken()
哦，我解决了，就像这样：
public ActionResult Edit（int？id，int？page）
在get和post方法中。但页面始终为空
问题是如果我这样做：
[HttpGet]
public ActionResult Edit(int? id, int? page)
{
ViewBag.CurrentPage = 2;
它将始终返回第二页
如果我执行硬编码，为什么它会起作用，如下所示：ViewBag.CurrentPage = 2;
但如果我这样做：ViewBag.CurrentPage = page;那么每次页面为空
谢谢
答案 0 :(得分：0)
返回第2页（或3,4,5）的最有效方法是在编辑页面中添加一个隐藏变量，其中包含页码。您必须继续将页码传递到索引页之后的每个页面，并在需要时使用它。
你可以做的另一件事就是对你的数据库造成很大的压力，那就是检索所有项目的列表，然后计算你的productID在列表中的位置，然后计算它应该在哪个页面上，然后转到那个页面：
var ProductIds = db.Products.Select(x=>x.ProductId).ToArray();
int MyProductIndex = ProductIds.IndexOf(id);
int itemsperpage = 30;//or whatever the number of items per page
var pagenum = Math.Ceiling(myproductIndex/itemsperpage);
答案 1 :(得分：0)
我这样解决了：
在索引中我添加了：
var id = Session["id"];
Session["id"] = id;