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How to update AmountDue value by InvoiceId in XERO API using C#

I am getting the list of Invoice details by Invoice Id.
Now i want to update AmountDue by respective Invoice Id.
i tried by below code:
ByInvoiceId.AmountDue = Convert.ToDecimal(100.00);
public_app_api.Invoices.Update(ByInvoiceId);
but..Error as
"A validation exception occurred"
What's the reason behind and How to solve this?

There are a number of ways to change the amount due on an invoice, however changing the value of the property directly is not one of them.
The amount due on an invoice is driven by the totals of the line items on the invoice minus the total of payments and allocated credit. One way to change the amount due is to change the values of your line items or add/remove some line items. You won't be able to change the invoice if it has been paid/partially paid.
Another way you could change the amount due on an invoice is to add a payment against the invoice or allocate credit from a credit note, prepayment, or overpayment to the invoice

In addition to MJMortimer's answer.
You can't change the line amounts on an AUTHORISED invoice via the c# API. You have to VOID the invoice and create a new one. You can however update DRAFT and SUBMITTED ones by updating the line items.
EDIT: Here is some code to help you. This is create invoice code, but amending one is essentially the same.
public XeroTransferResult CreateInvoices(IEnumerable<InvoiceModel> invoices, string user, string status)
{
_user = XeroApiHelper.User(user);
var invoicestatus = InvoiceStatus.Draft;
if (status == "SUBMITTED")
{
invoicestatus = InvoiceStatus.Submitted;
}
else if (status == "AUTHORISED")
{
invoicestatus = InvoiceStatus.Authorised;
}
var api = XeroApiHelper.CoreApi();
var xinvs = new List<Invoice>();
foreach (var inv in invoices)
{
var items = new List<LineItem>();
foreach (var line in inv.Lines)
{
decimal discount = 0;
if (line.PriceBeforeDiscount != line.Price)
{
discount = (decimal)(1 - line.Price / line.PriceBeforeDiscount) * 100;
}
items.Add(new LineItem
{
AccountCode = line.AccountCode,
Description = line.PublicationName != "N/A" ? line.PublicationName + " - " + line.Description : line.Description,
TaxAmount = (decimal)line.TaxAmount,
Quantity = 1,
UnitAmount = (decimal)line.PriceBeforeDiscount,
DiscountRate = discount,
TaxType = line.XeroCode,
ItemCode = line.ItemCode
});
}
var person = inv.Company.People.FirstOrDefault(p => p.IsAccountContact);
if (person == null)
{
person = inv.Company.People.FirstOrDefault(p => p.IsPrimaryContact);
}
var ninv = new Invoice
{
Number = inv.ClientInvoiceId,
Type = InvoiceType.AccountsReceivable,
Status = invoicestatus,
Reference = inv.Reference,
Contact = new Contact
{
Name = inv.Company.OrganisationName,
//ContactNumber = "MM" + inv.Company.CompanyId.ToString(),
FirstName = person.FirstName,
LastName = person.LastName,
EmailAddress = person.Email,
Phones = new List<Phone>()
{
new Phone {PhoneNumber = person.Telephone, PhoneType = PhoneType.Default},
new Phone {PhoneNumber = person.Mobile, PhoneType = PhoneType.Mobile}
},
Addresses = new List<Address>
{ new Address
{
//AttentionTo = inv.Company.People.FirstOrDefault(p => p.IsAccountContact) == null
//? inv.Company.People.FirstOrDefault(p=> p.IsPrimaryContact).FullName
//: inv.Company.People.FirstOrDefault(p => p.IsAccountContact).FullName,
//AddressLine1 = inv.Company.OrganisationName,
AddressLine1 = inv.Company.Address.Address1,
AddressLine2 = inv.Company.Address.Address2 ?? "",
AddressLine3 = inv.Company.Address.Address3 ?? "",
Region = inv.Company.Address.CountyState,
City = inv.Company.Address.TownCity,
PostalCode = inv.Company.Address.PostCode,
}
}
},
AmountDue = (decimal)inv.TotalAmount,
Date = inv.InvoiceDate,
DueDate = inv.DueDate,
LineItems = items,
LineAmountTypes = LineAmountType.Exclusive
};
if (SessionContext.TransferContactDetailsToXero == false)
{
ninv.Contact = new Contact
{
Id = inv.Company.XeroId ?? Guid.Empty,
Name = inv.Company.OrganisationName
};
}
xinvs.Add(ninv);
}
var success = true;
var xinvresult = new List<Invoice>();
try
{
api.SummarizeErrors(false);
xinvresult = api.Invoices.Create(xinvs).ToList();
}
catch (ValidationException ex)
{
// Something's gone wrong
}
foreach (var inv in xinvresult)
{
var mminvoice = invoices.FirstOrDefault(i => i.ClientInvoiceId == inv.Number);
if (inv.Errors != null && inv.Errors.Count > 0)
{
success = false;
if (mminvoice != null)
{
var errors = new List<XeroError>();
foreach (var err in inv.Errors)
{
errors.Add(new XeroError { ErrorDescription = err.Message });
}
mminvoice.XeroErrors = errors;
}
}
else
{
mminvoice.XeroTransferDate = DateTime.Now;
mminvoice.XeroId = inv.Id;
mminvoice.XeroErrors = new List<XeroError>();
}
}
return new XeroTransferResult
{
Invoices = invoices,
Success = success
};
}

Dynamic List in Entity FrameWork WebApi 2.0

Im using DTO's in EntityFrameWork with WebApi 2.0 , so I want to retrieve all the Orders, within the Orders, OrderProducts is a list in my program, I want to retrieve all the OrderProducts related to that Order my code right now is the following:
public async Task < IHttpActionResult > GetOrder() {
var order = from x in db.Order
select new OrderDTO {
OrderId = x.OrderId,
UserId = x.UserId,
orderStatusCode = x.orderStatusCode,
OrderProducts = new List < OrderProductDTO > {
new OrderProductDTO {
OrderId = x.OrderProducts.Select(y = >y.OrderId).FirstOrDefault(),
OrderProductId = x.OrderProducts.Select(y = >y.OrderProductId).FirstOrDefault(),
ProductId = x.OrderProducts.Select(y = >y.ProductId).FirstOrDefault(),
Product = new ProductDTO() {
productDesc = x.OrderProducts.Select(y = >y.Product.productDesc).FirstOrDefault(),
ProductId = x.OrderProducts.Select(y = >y.Product.ProductId).FirstOrDefault(),
productName = x.OrderProducts.Select(y = >y.Product.productName).FirstOrDefault(),
productPrice = x.OrderProducts.Select(y = >y.Product.productPrice).FirstOrDefault(),
}
}
},
purchaseDate = x.purchaseDate,
quantityOrder = x.quantityOrder,
totalOrderPrice = x.totalOrderPrice,
User = new UserDTO {
UserId = x.UserId,
username = x.User.username,
userInfo = new UserInfoDTO {
adress = x.User.UserInfo.adress,
city = x.User.UserInfo.city,
country = x.User.UserInfo.country,
zip = x.User.UserInfo.zip
}
}
};
return Ok(order);
Everything appears to be ok, but when I call the WebApi only the first element is returned, not all the elements in OrderProduct:
Any idea how to retrieve all the OrderProducts? Thanks.

Well you're only populating a single item in your query. Instead, you should do this:
....
OrderProducts = x.OrderProducts.Select(op => new OrderProductDTO
{
OrderId = op.OrderId,
OrderProductId = op.OrderProductId,
//etc
}
....

It looks like you're only asking for one Product instead of a List
Product = new ProductDTO() {
productDesc = x.OrderProducts.Select(y = >y.Product.productDesc).FirstOrDefault(),
ProductId = x.OrderProducts.Select(y = >y.Product.ProductId).FirstOrDefault(),
productName = x.OrderProducts.Select(y = >y.Product.productName).FirstOrDefault(),
productPrice = x.OrderProducts.Select(y = >y.Product.productPrice).FirstOrDefault(),
}
Should probably be
Products = new List<ProductDTO>() {...}

Get data from SQL datebase and return as string

Need help to get the 1st row record and return record as string in the << >> after while() loop.
There are a lot of columns in one row, I'm having a problem to declare it as string st? like usually string st = new string() please help to correct it
Thanks
public string Get_aodIdeal(string SubmittedBy)
{
String errMsg = "";
Guid? rguid = null;
int isOnContract = 0;
int isFreeMM = 0;
string _FileName;
DateTime InstallDateTime = DateTime.Now;
string FileDate = ToYYYYMMDD(DateTime.Now);
errMsg = "Unknown Error.";
SqlConnection conn = null; SqlCommand cmd = null;
string st = null;
conn = new SqlConnection(WebConfigurationManager.ConnectionStrings["iDeal"].ConnectionString);
cmd = new SqlCommand();
string SQL = "select TOP 1 * from table1 Order by SubmittedOn desc";
SqlDataAdapter sqd = new SqlDataAdapter(SQL, conn);
cmd.CommandTimeout = 1200;
conn.Open();
SqlDataReader sqr;
//sqd.SelectCommand.Parameters.Add("#Submitted", SqlDbType.Int).Value = PostID;
sqr = sqd.SelectCommand.ExecuteReader();
while (sqr.Read())
st = new string{
rguid = cmd.Parameters["#rguid"].Value as Guid?,
ridno = int.Parse(sqr["ridno"].ToString()),
SubmittedOn= DateTime.Parse(sqr["SubmittedOn"].ToString()),
SubmittingHost = sqr["SubmittingHost"].ToString(),
ServiceAgreementNo = sqr["ServiceAgreementNo"].ToString(),
DocumentID = sqr["DocumentID"].ToString(),
Source = sqr["Source"].ToString(),
FileName = sqr["FileName"].ToString(),
FileType = sqr["FileType"].ToString(),
FileDate = DateTime.Parse(sqr["FileDate"].ToString()),
InstallTime = DateTime.Parse(sqr["InstallTime"].ToString()),
CalenderCode = cmd.Parameters["CalenderCode"].Value as Guid,
isFreeMM = bool.Parse(sqr["isFreeMM"].ToString()),
isOnContract = bool.Parse(sqr["isOnContract"].ToString()),
isProcessed = bool.Parse(sqr["isProcessed"].ToString()),
ProcessedByFullName = sqr["ProcessedByFullName"].ToString(),
isDelete = bool.Parse(sqr["isDelete"].ToString()),
version = int.Parse(sqr["Version"].ToString()),
LastUpdatedBy = DateTime.Parse(sqr["LastUpdatedBy"].ToString()),
LastUpdatedOn = DateTime.Parse(sqr["LastUpdatedOn"].ToString()),
shopGuid = sqr["shopGuid"].ToString(),
MacID = sqr["MacID"].ToString(),
MSISDN = sqr["MSISDN"].ToString()
}

You can use a StringBuilder for this purpose as like the following:
StringBuilder strBuilder= new StringBuilder();
while (sqr.Read())
{
strBuilder.AppendFormat("PostID : {0}{1}",sqr["PostID"].ToString(),Environment.NewLine);
strBuilder.AppendFormat("dateposted : {0}{1}",sqr["dateposted"].ToString(),Environment.NewLine);
// And so on Build your string
}
Finally the strBuilder.ToString() will give you the required string. But More smarter way is Create a Class with necessary properties and an Overrided .ToString method for display the output.
Let AodIdeal be a class with an overrided ToString() method. And Let me defined it like the following :
public class AodIdeal
{
public int PostID { get; set; }
public string dateposted { get; set; }
public string Source { get; set; }
// Rest of properties here
public override string ToString()
{
StringBuilder ObjectStringBuilder = new StringBuilder();
ObjectStringBuilder.AppendFormat("PostID : {0}{1}", PostID, Environment.NewLine);
ObjectStringBuilder.AppendFormat("dateposted : {0}{1}",dateposted, Environment.NewLine);
ObjectStringBuilder.AppendFormat("Source : {0}{1}", Source, Environment.NewLine);
// and so on
return ObjectStringBuilder.ToString();
}
}
Then you can create an object of the class(let it be objAodIdeal), and make use of its properties instead for the local variables. And finally objAodIdeal.ToString() will give you the required output.
Example usage
AodIdeal objAodIdeal= new AodIdeal();
while (sqr.Read())
{
objAodIdeal.PostID = int.Parse(sqr["PostID"].ToString());
objAodIdeal.dateposted= sqr["dateposted"].ToString();
// assign rest of properties
}
string requiredString= objAodIdeal.ToString();

How do i get data by calling a method in Entity Framework

I want to get ResourceNames on the base of Id in EntityFramework but it is giving error: "LINQ to Entities does not recognize the method 'System.String GetResourceNameById(Int32)' method, and this method cannot be translated into a store expression."
Following ismy code.
public string GetResourceNameById(int Id)
{
return _DBContex.Employees.Where(x => x.Id == Id).FirstOrDefault().FirstName;
}
public CygnusInternalResponseViewModel GetAllTimeEntriesForGrid(int start = 0, int perPage = -1, string sortColumn = "", string sortDirection = "")
{
List<TimeEntryViewModel> te = new List<TimeEntryViewModel>();
te = (from jb in _DBContex.TimeEntries
select new TimeEntryViewModel
{
Id = jb.Id,
ResourceId = (int)jb.ResourceId,
TicketId = (int)jb.TicketId,
WorkType = (WorkTypeCatalog)jb.WorkType,
HoursWorked = (float)jb.HoursWorked,
Status = (TimeEntryStatusCatalog)jb.Status,
Role = (RoleCatalog)jb.Role,
StartTime = (TimeSpan)jb.StartTime,
EndTime = (TimeSpan)jb.EndTime,
SummaryNotes = jb.SummaryNotes,
InternalNotes = jb.InternalNotes,
Contract = (DateTime)jb.Contract,
Date = (DateTime)jb.Date,
ResourceName = GetResourceNameById((int)jb.ResourceId) // ERRORR Line
}).ToList();

You might need to create in memory representation of your database table.
public CygnusInternalResponseViewModel GetAllTimeEntriesForGrid(int start = 0, int perPage = -1, string sortColumn = "", string sortDirection = "")
{
List<TimeEntryViewModel> te = new List<TimeEntryViewModel>();
var query=_DBContex.TimeEntries.ToList();//create in-memory representation
te = (from jb in query
select new TimeEntryViewModel
{
Id = jb.Id,
ResourceId = (int)jb.ResourceId,
TicketId = (int)jb.TicketId,
WorkType = (WorkTypeCatalog)jb.WorkType,
HoursWorked = (float)jb.HoursWorked,
Status = (TimeEntryStatusCatalog)jb.Status,
Role = (RoleCatalog)jb.Role,
StartTime = (TimeSpan)jb.StartTime,
EndTime = (TimeSpan)jb.EndTime,
SummaryNotes = jb.SummaryNotes,
InternalNotes = jb.InternalNotes,
Contract = (DateTime)jb.Contract,
Date = (DateTime)jb.Date,
ResourceName = GetResourceNameById((int)jb.ResourceId)
}).ToList();

te = (from jb in _DBContex.TimeEntries
select new TimeEntryViewModel
{
Id = jb.Id,
ResourceId = (int)jb.ResourceId,
TicketId = (int)jb.TicketId,
WorkType = (WorkTypeCatalog)jb.WorkType,
HoursWorked = (float)jb.HoursWorked,
Status = (TimeEntryStatusCatalog)jb.Status,
Role = (RoleCatalog)jb.Role,
StartTime = (TimeSpan)jb.StartTime,
EndTime = (TimeSpan)jb.EndTime,
SummaryNotes = jb.SummaryNotes,
InternalNotes = jb.InternalNotes,
Contract = (DateTime)jb.Contract,
Date = (DateTime)jb.Date
}).ToList();
te.Foreach(t=>t.ResourceName = GetResourceNameById((int)t.ResourceId);
First you get the records then you set the ResourceName

You can call ToList() method before your SELECT and then call your function.

Error when returning value in C# 2.0

I downloaded an example application for using some web services with an online system.
I am not sure if all code below is needed but it is what I got and what I am trying to do is to use the search function.
I start by calling searchCustomer with an ID I have:
partnerRef.internalId = searchCustomer(customerID);
And the code for searchCustomer:
private string searchCustomer(string CustomerID)
{
string InternalID = "";
CustomerSearch custSearch = new CustomerSearch();
CustomerSearchBasic custSearchBasic = new CustomerSearchBasic();
String nameValue = CustomerID;
SearchStringField entityId = null;
entityId = new SearchStringField();
entityId.#operator = SearchStringFieldOperator.contains;
entityId.operatorSpecified = true;
entityId.searchValue = nameValue;
custSearchBasic.entityId = entityId;
String statusKeysValue = "";
SearchMultiSelectField status = null;
if (statusKeysValue != null && !statusKeysValue.Trim().Equals(""))
{
status = new SearchMultiSelectField();
status.#operator = SearchMultiSelectFieldOperator.anyOf;
status.operatorSpecified = true;
string[] nskeys = statusKeysValue.Split(new Char[] { ',' });
RecordRef[] recordRefs = new RecordRef[statusKeysValue.Length];
for (int i = 0; i < nskeys.Length; i++)
{
RecordRef recordRef = new RecordRef();
recordRef.internalId = nskeys[i];
recordRefs[i] = recordRef;
}
status.searchValue = recordRefs;
custSearchBasic.entityStatus = status;
}
custSearch.basic = custSearchBasic;
SearchResult response = _service.search(custSearch);
if (response.status.isSuccess)
{
processCustomerSearchResponse(response);
if (seachMoreResult.status.isSuccess)
{
processCustomerSearchResponse(seachMoreResult);
return InternalID;
}
else
{
_out.error(getStatusDetails(seachMoreResult.status));
}
}
else
{
_out.error(getStatusDetails(response.status));
}
return InternalID;
}
In the code above processCustomerSearchResponse gets called
processCustomerSearchResponse(response);
The code for this function is:
public string processCustomerSearchResponse(SearchResult response)
{
string InternalID = "";
Customer customer;
customer = (Customer)records[0];
InternalID = customer.internalId;
return InternalID;
}
What the original code did was to write some output in the console but I want to return the InternalID instead. When I debug the application InternalID in processCustomerSearchResponse contains the ID I want but I don't know how to pass it to searchCustomer so that function also returns the ID. When I debug searchCustomer InternalID is always null. I am not sure on how to edit the code under response.status.isSuccess
to return the InternalID, any ideas?
Thanks in advance.

When you call processCustomerSearchResponse(response);, you need to store the return value in memory.
Try modifying your code like this:
InternalID = processCustomerSearchResponse(response);