How to rollback a transaction in EntityFramework? - asp.net-mvc-4

I have two database tables named Courses and Transactions.Courses stores the details of a particular course and Transactions table stores the details of the transactions performed by a particular user.
My question is how can I make sure that entry in the CourseTable is saved only when transactions(add,edit,delete) regarding that particular course is saved into the TransactionTable
CourseTable is
TransactionTable is
Controller is
POST: /Course/Add
[HttpPost]
public ActionResult Add(CourseVM _mdlCourseVM)
{
string actionName=this.ControllerContext.RouteData.Values["action"].ToString();
string controllerName=this.ControllerContext.RouteData.Values["controller"].ToString();
Course _course = new Course();
_course.Duration = _mdlCourseVM.Course.Duration;
_course.DurationMode = _mdlCourseVM.DurationModeId;
_course.InstalmentFee = _mdlCourseVM.Course.InstalmentFee;
_course.Name = _mdlCourseVM.Course.Name;
_course.SingleFee = _mdlCourseVM.Course.SingleFee;
_db.Courses.Add(_course);
int i = _db.SaveChanges();
if (i > 0)
{
Common _cmn=new Common();
//Add the transaction details
int k=_cmn.AddTransactions(actionName,controllerName,"");
//Want to commit changes to the coursetable here
if(k>0){
_db.commitTransaction()
}
//Want to rollback the committed transaction
else{
_db.rollbackTransaction();
}
}
}

I solved the above scenario by using System.Transactions.Hope anyone with same scenario find it useful.
using (TransactionScope _ts = new TransactionScope())
{
string actionName = this.ControllerContext.RouteData.Values["action"].ToString();
string controllerName = this.ControllerContext.RouteData.Values["controller"].ToString();
Course _course = new Course();
_course.Duration = _mdlCourseVM.Course.Duration;
_course.DurationMode = _mdlCourseVM.DurationModeId;
_course.InstalmentFee = _mdlCourseVM.Course.InstalmentFee;
_course.Name = _mdlCourseVM.Course.Name;
_course.SingleFee = _mdlCourseVM.Course.SingleFee;
_db.Courses.Add(_course);
int i = _db.SaveChanges();
if (i > 0)
{
Common _cmn = new Common();
int k = _cmn.AddTransactions(actionName, controllerName, "",Session["UserId"].ToString());
if (k > 0)
{
_ts.Complete();
return Json(new { message = "success" }, JsonRequestBehavior.AllowGet);
}
else
{
return Json(new { message = "error" }, JsonRequestBehavior.AllowGet);
}
}
else
{
return Json(new { message = "error" }, JsonRequestBehavior.AllowGet);
}
}
}

Related

Catch StatusCode from execution value in Xunit

I want to compare the return value from controller execution whether that fulfill the condition or not. From debugging I noticed the 'StatusCode' but not got an way to catch that value for comparing. My Code for testing is
public void PostAmount_Withdraw_Returns_Null()
{
// Arrange
Amount amount = new Amount() { Id = 0, PaymentDate = DateTime.Today,
PaymentTypeId = 3, PaymentAmount = 500, ClientId = 1, Balance = 0 };
_accountServiceMock.Setup(s => s.Withdraw(amount)).Throws(new Exception());
var target = SetupAmountsController();
//Act
var actual = target.PostAmount(amount);
//Assert
actual.ShouldNotBeNull();
//actual.Value.ShouldBe(response);
}
What call controller methods below : -
public ActionResult<Amount> PostAmount(Amount amount)
{
try
{
if (amount.PaymentTypeId == 1)
{
_accountService.Deposit(amount);
}
else if (amount.PaymentTypeId == 2)
{
_accountService.Withdraw(amount);
}
else
{
return Problem("Model 'Amounts' is null.");
}
return new OkObjectResult(new { Message = "Payment Success!" });
}
catch (DbUpdateConcurrencyException)
{
return Problem("There was error for updating model Payment");
}
}
And, returned the value after execution from Unit Test
I want to give condition likes below: -
actual.Result.StatusCode = HttpStatusCode.BadRequest or
actual.Result.StatusCode = 500
Just got the answer. It will be likes below: -
(actual.Result as ObjectResult).StatusCode.ShouldBe((int)HttpStatusCode.InternalServerError);
you need to define here 'status code' what want to compare. In my case it was 500.

Convert EntityFramework to Raw SQL Queries in MVC

I am trying to make a crud calendar in my .net, my question is, How do make the below entity framework codes to SQL queries?
[HttpPost]
public JsonResult SaveEvent(Event e)
{
var status = false;
using (MyDatabaseEntities dc = new MyDatabaseEntities())
{
if (e.EventID > 0)
{
//Update the event
var v = dc.Events.Where(a => a.EventID == e.EventID).FirstOrDefault();
if (v != null)
{
v.Subject = e.Subject;
v.Start = e.Start;
v.End = e.End;
v.Description = e.Description;
v.IsFullDay = e.IsFullDay;
v.ThemeColor = e.ThemeColor;
}
}
else
{
dc.Events.Add(e);
}
dc.SaveChanges();
status = true;
}
return new JsonResult { Data = new { status = status } };
}
http://www.dotnetawesome.com/2017/07/curd-operation-on-fullcalendar-in-aspnet-mvc.html
Thanks guys
You can run raw query in entity framework with dc.Database.ExecuteSqlCommand() command like below:
var status = false;
using (MyDatabaseEntities dc = new MyDatabaseEntities())
{
if (e.EventID > 0)
{
dc.Database.ExecuteSqlCommand(&#"
UPDATE Events
SET Subject = {e.Subject},
Start = {e.Start},
End = {End},
Description = {Description},
IsFullDay = {IsFullDay},
ThemeColor = {ThemeColor},
WHERE EventID = {e.EventID}
IF ##ROWCOUNT = 0
INSERT INTO Events (EventID, Subject, Start, End, Description, IsFullDay, ThemeColor)
VALUES ({e.EventID}, {e.Subject}, ...)
");
status = true;
}
return new JsonResult { Data = new { status = status }
};

Having error in updating my record in database my method as follows

What I have done wrong in this code ? (I am using MVC4 and EF)
As an example: Please clear this am fresher to use MVC4
EditResponse response = new EditResponse();
try
{
using (WeMatchContext db = new WeMatchContext())
{
B_MEMBER_REGISTER update = new B_MEMBER_REGISTER();
var output = db.B_MEMBER_REGISTER.Where(x => x.MEMBER_ID == model.MEMBER_ID).FirstOrDefault();
if(output != null )
{
update.FIRST_NAME = model.FIRST_NAME;
update.LAST_NAME = model.LAST_NAME;
update.GENDER = model.GENDER;
update.DOB = model.DOB;
int resultcount = db.SaveChanges();
if (resultcount > 0)
{
response.MEMBER_ID = update.MEMBER_ID;
response.ResultCode = 0;
response.Message = "Updated Successfully";
}
You have to attach updated data with the db entity. please try this,
using (WeMatchContext db = new WeMatchContext())
{
var update = db.B_MEMBER_REGISTER.Where(x => x.MEMBER_ID == model.MEMBER_ID).FirstOrDefault();
if(update != null )
{
update.FIRST_NAME = model.FIRST_NAME;
update.LAST_NAME = model.LAST_NAME;
update.GENDER = model.GENDER;
update.DOB = model.DOB;
//below line of code is very important.
db.B_MEMBER_REGISTER.Attach(update);
db.Entry(update).State = EntityState.Modified;
int resultcount = db.SaveChanges();
if (resultcount > 0)
{
response.MEMBER_ID = update.MEMBER_ID;
response.ResultCode = 0;
response.Message = "Updated Successfully";
}
}
}

Nhibernate Throws Found shared references to a collection

I have read thru a number of other questions similar to this one - but being new to Nhibernate, none of them seem to answer my question of why is Inhibernate throwing a "Found shared references to a collection: Order.ShippingAddress.Items" to the following code:
VendorOrderNotificationAcknowledgement ICheckoutVendorService.SendOrderNotification(VendorOrderNotification request)
{
OrderRepository repo = new OrderRepository();
var order =(AbstractOrder) repo.FindByCartId(request.OrderNotification.CartOrderId);
ShippingAddress billingAddress = order.ShippingAddresses[0];
var itemsFromDb = billingAddress.Items;
order.ClearAllShippingAddresses();
wcfFactory.UpdateOrder(order); //NO ERROR THROWN HERE!
ShippingAddress shippingAddress = orderHelper.CreateShippingAddress(request.ShippingDetails);
shippingAddress.Items = itemsFromDb;
order.AddShippingAddress(shippingAddress);
order.SourceCode = _sourceCode;
order.TaxAmount = 0;
order.GiftCertificateAmount = 0;
order.Status = StatusCode.Approved;
order.CreatedAt = request.OrderNotification.OrderTime.Year >2010
? request.OrderNotification.OrderTime
: DateTime.Now;
order.PurchasedDate=
request.OrderNotification.OrderTime.Year>2010
? request.OrderNotification.OrderTime
: DateTime.Now;
order.UpdatedAt = DateTime.Now;
if (request.OrderNotification.OrderCharges != null)
{
order.ShippingAmount = request.OrderNotification.OrderCharges.Shipping;
order.TaxAmount = request.OrderNotification.OrderCharges.DutyAndTaxes;
}
else
{
order.ShippingAmount = 0;
order.TaxAmount = 0;
}
order.UseGiftWrap = false;
order.SourceCode = _sourceCode;
UpdateEshopWorldOrder(order); // THROWS FOUND SHARED REFERENCES TO A COLLECTION: ORDER.SHIPPINGADDRESS.ITEMS
var orderDto = orderHelper.CreateOrderDto(billingAddress, orderHelper, order);
var dtoShippingAddresses = orderHelper.CreateDtoShippingAddresses(order);
orderDto.ShippingAddresses = dtoShippingAddresses;
ShippingMethodDto shippingMethodDto = 0;
var mine = wcfFactory.SendOrder(orderDto);
//More Code below here ...
}
public OrderDto CreateOrderDto(ShippingAddress billingAddress, OrderHelper orderHelper, AbstractOrder order)
{
OrderDto orderDto = new OrderDto();
orderDto.AlternateOrderId = order.Id.ToString();
orderDto.ConfirmationNumber = order.ConfirmationNumber;
orderDto.Coupons = new string[0];
orderDto.DiscountAmount = order.DiscountAmount;
orderDto.GiftCardAmount = order.GiftCertificateAmount;
orderDto.PurchaseDate = order.PurchasedDate;
orderDto.ShippingAmount = order.ShippingAmount;
orderDto.SourceCode = order.SourceCode;
orderDto.TaxAmount = order.TaxAmount;
orderDto.UseGiftWrap = order.UseGiftWrap;
var customerDto = orderHelper.CreateCustomerDto(billingAddress);
orderDto.SoldTo = customerDto;
return orderDto;
}
public void UpdateEshopWorldOrder(AbstractOrder order)
{
try
{
//Session.Update(order);
// transaction.Commit();
Session.Flush();
}
catch (Exception ex)
{
_logger.Debug("order saved failed with an error of " + ex.Message);
_logger.Error(ex);
throw;
}
}
Any insights are appreciated....
thnx
I think the problem is, that your itemsFromDB collection object is referenced by shippingAddress and also by billingAddress.
Both entities need their own collection-objects. Both collections however may contain references to the same address-objects.
So I assume replacing shippingAddress.Items = itemsFromDb; with something like
shippingAddress.Items.AddRange(itemsFromDb)
or
shippingAddress.Items = new List<ShippingAddress>(itemsFromDb) should do the trick

Why does this controller double the inserts when I try to archive the results of the Bing Search API?

I'm trying to archive my search results for a term by
Using the Bing API in an async controller
Inserting them into database using Entity Framework
using the Bing API and insert them into a database using entity framework. For whatever reason it is returning 50 results, but then it enters 100 results into the database.
My Controller Code:
public class DHWebServicesController : AsyncController
{
//
// GET: /WebService/
private DHContext context = new DHContext();
[HttpPost]
public void RunReportSetAsync(int id)
{
int iTotalCount = 1;
AsyncManager.OutstandingOperations.Increment(iTotalCount);
if (!context.DHSearchResults.Any(xx => xx.CityMarketComboRunID == id))
{
string strBingSearchUri = #ConfigurationManager.AppSettings["BingSearchURI"];
string strBingAccountKey = #ConfigurationManager.AppSettings["BingAccountKey"];
string strBingUserAccountKey = #ConfigurationManager.AppSettings["BingUserAccountKey"];
CityMarketComboRun cityMarketComboRun = context.CityMarketComboRuns.Include(xx => xx.CityMarketCombo).Include(xx => xx.CityMarketCombo.City).First(xx => xx.CityMarketComboRunID == id);
var bingContainer = new Bing.BingSearchContainer(new Uri(strBingSearchUri));
bingContainer.Credentials = new NetworkCredential(strBingUserAccountKey, strBingAccountKey);
// now we can build the query
Keyword keyword = context.Keywords.First();
var bingWebQuery = bingContainer.Web(keyword.Name, "en-US", "Moderate", cityMarketComboRun.CityMarketCombo.City.Latitude, cityMarketComboRun.CityMarketCombo.City.Longitude, null, null, null);
var bingWebResults = bingWebQuery.Execute();
context.Configuration.AutoDetectChangesEnabled = false;
int i = 1;
DHSearchResult dhSearchResult = new DHSearchResult();
List<DHSearchResult> lst = new List<DHSearchResult>();
var webResults = bingWebResults.ToList();
foreach (var result in webResults)
{
dhSearchResult = new DHSearchResult();
dhSearchResult.BingID = result.ID;
dhSearchResult.CityMarketComboRunID = id;
dhSearchResult.Description = result.Description;
dhSearchResult.DisplayUrl = result.DisplayUrl;
dhSearchResult.KeywordID = keyword.KeywordID;
dhSearchResult.Created = DateTime.Now;
dhSearchResult.Modified = DateTime.Now;
dhSearchResult.Title = result.Title;
dhSearchResult.Url = result.Url;
dhSearchResult.Ordinal = i;
lst.Add(dhSearchResult);
i++;
}
foreach (DHSearchResult c in lst)
{
context.DHSearchResults.Add(c);
context.SaveChanges();
}
AsyncManager.Parameters["message"] = "The total number of results was "+lst.Count+". And there are " + context.DHSearchResults.Count().ToString();
}
else
{
AsyncManager.Parameters["message"] = "You have already run this report";
}
AsyncManager.OutstandingOperations.Decrement(iTotalCount);
}
public string RunReportSetCompleted(string message)
{
string str = message;
return str;
}
}
Here is how I am calling it from my asp.net mvc 4 page.
#Ajax.ActionLink("Run Report", "GatherKeywordsFromBing", "DHWebServices",
new { id=item.CityMarketComboRunID},
new AjaxOptions { OnSuccess = "ShowNotifier();", UpdateTargetId = "TopNotifierMessage", HttpMethod = "POST", InsertionMode = InsertionMode.Replace, LoadingElementId = strCityMarketComboProgressID, LoadingElementDuration = 1000 },
new { #class = "ViewLink" })
<span class="ProgressIndicator" id="#strCityMarketComboProgressID"><img src="#Url.Content("~/Content/img/SmallBall.gif")" alt="loading" /></span>
For whatever reason all of
Try saving only once:
foreach (DHSearchResult c in lst)
{
context.DHSearchResults.Add(c);
}
context.SaveChanges();
Also there's nothing asynchronous in your code, so there's no point of using asynchronous controller. Not only that it won't improve anything but it might make things worse.