We Keep Coding

C# SAP .net connector not returning the same data as seen in SAP GUI

I have followed the code shown on this site: "https://www.veonconsulting.com/integrating-sap-using-nco/",
I'm trying to get data from the function BAPI_PRODORD_GET_DETAIL, I tested <bapi_prodord_get_detail><number>1000262</number><struct><order_objects><header>X</header><operations>X</operations><components>X</components></order_objects></struct></bapi_prodord_get_detail>, on SAP GUI, I can see data for Header, Components & Operations, but in the code, I 'm not getting the same response, could you please help.
Code:
public bool testConnection()
{
bool state = false;
string rfcRequest = "<RFC_READ_TABLE><QUERY_TABLE>MARD</QUERY_TABLE><DELIMITER>*"
+ "</DELIMITER><ROWSKIPS>0</ROWSKIPS><ROWCOUNT>0</ROWCOUNT><TABLE><OPTIONS><ROW>"
+ "<TEXT>MATNR IN (</TEXT></ROW><ROW><TEXT>'testConnection'</TEXT></ROW><ROW>"
+ "<TEXT>)</TEXT></ROW></OPTIONS></TABLE></RFC_READ_TABLE>";
Utils.RfcClient client = new Utils.RfcClient();
try
{
XElement response = client.PullRequestToSAPrfc(rfcRequest);
state = true;
}
catch (RfcLogonException ex)
{
Console.Write("Logon Failed");
}
catch (RfcInvalidStateException ex)
{
Console.Write("RFC Failed");
}
catch (RfcBaseException ex)
{
Console.WriteLine("communication error" + ex.Message);
}
catch (Exception ex)
{
Console.Write("Connection error");
}
finally
{
//client.disconnectDestination();
}
return state;
}
public bool testConnection()
{
bool state = false;
string rfcRequest = "<bapi_prodord_get_detail><number>1000262</number><struct>"
+ "<order_objects><header>X</header><operations>X</operations><components>X"
+ "</components></order_objects></struct></bapi_prodord_get_detail>";
Utils.RfcClient client = new Utils.RfcClient();
try
{
XElement response = client.PullRequestToSAPrfc(rfcRequest);
state = true;
}
catch (RfcLogonException ex)
{
Console.Write("Logon Failed");
}
catch (RfcInvalidStateException ex)
{
Console.Write("RFC Failed");
}
catch (RfcBaseException ex)
{
Console.WriteLine("communication error" + ex.Message);
}
catch (Exception ex)
{
Console.Write("Connection error");
}
finally
{
//client.disconnectDestination();
}
return state;
}
public XElement PullRequestToSAPrfc(string XMLRequest)
{
IRfcFunction requestFn;
requestFn = PrepareRfcFunctionFromXML(XElement.Parse(XMLRequest));
RfcSessionManager.BeginContext(_ECCsystem);
requestFn.Invoke(_ECCsystem);
RfcSessionManager.EndContext(_ECCsystem);
XElement XMLResponse = PrepareXMLFromrfc(requestFn);
return XMLResponse;
}
public IRfcFunction PrepareRfcFunctionFromXML(XElement xmlFunction)
{
RfcRepository repo = _ECCsystem.Repository;
IRfcFunction RfcFunction = repo.CreateFunction(xmlFunction.Name.ToString());
foreach (XElement xelement in xmlFunction.Elements())
{
if (xelement.Name.ToString().Equals("TABLE"))
{
if (NotProcessSpecialTable(xelement))
continue;
IRfcTable options = RfcFunction.GetTable(xelement.Descendants().First().Name.ToString());
foreach (XElement row in xelement.Elements().First().Elements())
{
options.Append();
foreach (XElement rowElement in row.Elements())
{
string elementName = rowElement.Name.ToString();
RfcElementMetadata elementMeta = options.GetElementMetadata(elementName);
var elementValue = getValueAsMetadata(ref elementMeta, rowElement.Value);
if (elementValue is string && string.IsNullOrEmpty((string)elementValue)) { continue; }
options.SetValue(elementName, elementValue);
}
}
}
else if (xelement.Name.ToString().Equals("STRUCT"))
{
IRfcStructure options = RfcFunction.GetStructure(xelement.Descendants().First().Name.ToString());
foreach (XElement structElement in xelement.Elements().First().Elements())
{
string elementName = structElement.Name.ToString();
RfcElementMetadata elementMeta = options.GetElementMetadata(elementName);
var elementValue = getValueAsMetadata(ref elementMeta, structElement.Value);
if (elementValue is string && string.IsNullOrEmpty((string)elementValue)) { continue; }
options.SetValue(elementName, elementValue);
}
}
else
{
string elementName = xelement.Name.ToString();
RfcElementMetadata elementMeta = RfcFunction.GetElementMetadata(elementName);
var elementValue = getValueAsMetadata(ref elementMeta, xelement.Value);
if (elementValue is string && string.IsNullOrEmpty((string)elementValue)) { continue; }
RfcFunction.SetValue(elementName, elementValue);
}
}
return RfcFunction;
}
public XElement PrepareXMLFromrfc(IRfcFunction rfcFunction)
{
var XMLRoot = new XElement(rfcFunction.Metadata.Name);
for (int functionIndex = 0; functionIndex < rfcFunction.ElementCount; functionIndex++)
{
var functionMatadata = rfcFunction.GetElementMetadata(functionIndex);
if (functionMatadata.DataType == RfcDataType.TABLE)
{
var rfcTable = rfcFunction.GetTable(functionMatadata.Name);
var XMLTable = new XElement(functionMatadata.Name);
foreach (IRfcStructure rfcStracture in rfcTable)
{
XElement XMLRow = new XElement("ROW");
for (int i = 0; i < rfcStracture.ElementCount; i++)
{
RfcElementMetadata rfcElementMetadata = rfcStracture.GetElementMetadata(i);
if (rfcElementMetadata.DataType == RfcDataType.BCD)
{ XMLRow.Add(new XElement(rfcElementMetadata.Name, rfcStracture.GetString(rfcElementMetadata.Name))); }
else
{
XMLRow.Add(new XElement(rfcElementMetadata.Name, rfcStracture.GetString(rfcElementMetadata.Name)));
}
}
XMLTable.Add(XMLRow);
}
XMLRoot.Add(XMLTable);
}
else if (functionMatadata.DataType == RfcDataType.STRUCTURE)
{
var rfcStructure = rfcFunction.GetStructure(functionMatadata.Name);
XElement XMLRow = new XElement(functionMatadata.Name);
for (int elementIndex = 0; elementIndex < rfcStructure.ElementCount; elementIndex++)
{
RfcElementMetadata eleMeta = rfcStructure.GetElementMetadata(elementIndex);
XMLRow.Add(new XElement(eleMeta.Name, rfcStructure.GetString(eleMeta.Name)));
}
XMLRoot.Add(XMLRow);
}
else
{
RfcElementMetadata rfcElement = rfcFunction.GetElementMetadata(functionIndex);
XMLRoot.Add(new XElement(rfcElement.Name, rfcFunction.GetString(rfcElement.Name)));
}
}
return XMLRoot;
}
# Below function is used for the data types.
private object getValueAsMetadata(ref RfcElementMetadata elementMeta, string value)
{
switch (elementMeta.DataType)
{
case RfcDataType.BCD:
return value;
case RfcDataType.NUM:
if (value.Contains("."))
{
int elementValue;
int.TryParse(value, out elementValue);
return elementValue;
}
else
{
return Convert.ToInt32(value);
}
case RfcDataType.INT1:
return Convert.ToInt32(value);
case RfcDataType.INT2:
return Convert.ToInt32(value);
case RfcDataType.INT4:
return Convert.ToInt32(value);
case RfcDataType.INT8:
return Convert.ToInt64(value);
case RfcDataType.CHAR:
return value;
case RfcDataType.DATE:
return DateTime.ParseExact(value, "yyyy-MM-dd", CultureInfo.InvariantCulture);
default:
return string.Empty;
}
}

You are confronted to the classic issue of external and internal values in SAP.
Your screenshot shows the ABAP Function Module Test screen in SAP system. When you enter a value in the screen, it may be transformed internally before calling the function module.
These are called the external and internal formats. "External" is what is shown in the User Interface (typed or displayed), "internal" is the value written to the database.
For instance, imagine a database object whose primary key is a GUID, this is the object key in internal format, but in the user interface this object is always referred or shown by its name (candidate key).
In your precise case, when a Production Order is a number, the internal format always contains leading zeroes on 12 digits, and the external format does not display them. In the Function Module Test screen, if you enter this external value:
1000262
it's converted to the following internal value and the BAPI is called with it:
000001000262
Generally speaking, when you call any function module from another program, you must indicate the internal value, because there's no user interface implied between the two.
i.e., use this XML in your method testConnection:
string rfcRequest = "<bapi_prodord_get_detail><number>000001000262</number><struct>"
+ "<order_objects><header>X</header><operations>X</operations><components>X"
+ "</components></order_objects></struct></bapi_prodord_get_detail>";
See also this answer about external and internal formats: Converting MATNR via conversion exit fails for custom table

If you would like to do the required field conversions programmatically, which are explained in Sandra Rossi's answer, you may use the RFMs BAPI_CONVERSION_EXT2INT, BAPI_CONVERSION_EXT2INT1, BAPI_CONVERSION_INT2EXT and BAPI_CONVERSION_INT2EXT1 for doing so.
However, every additional RFC call has of course a negative impact on the performance.
Besides, SAP Note 206068 is a good resource for an explanation of some RFC BAPI pitfalls which you also stepped in.

Site not working Error if the function is not working

I have a function which checks and authenticates the User and on that basis the data is displayed to the respective User. And the function name is Get_AuthenticateUser_Ums(strUserName);
I call this function on Page_load. This function contains a web service. Now what I want is whenever the service is not working or has some issue, I want that the site should not be displayed to the user and message should prompt as The service is down, so couldnt load the site.
Below is my code
if (!IsPostBack)
{
Get_AuthenticateUser_Ums(strUserName); }
And function
private void Get_AuthenticateUser_Ums(string strUserName)
{
try
{
strReturnMessage = string.Empty;
Boolean bolReturn = ObjUMS.AuthenticateApplicationAccess(strUserName, strAppUrl, out strReturnMessage);
if (bolReturn)
{
DataSet dsUserGroups = new DataSet();
dsUserGroups = ObjUMS.GetUserAppDetailsbyUserNameApplicationUrl(strUserName, strAppUrl, out strReturnMessage);
if (dsUserGroups.Tables[1] != null && dsUserGroups.Tables[1].Rows.Count > 0)
{
string strSubGroupName = dsUserGroups.Tables[1].Rows[0]["SUBGROUP_NAME"].ToString();
if (strSubGroupName == "UBR Requester")
{
if (dsUserGroups.Tables[2] != null && dsUserGroups.Tables[2].Rows.Count > 0)
{
string[] allStates = dsUserGroups.Tables[2].AsEnumerable().Select(r => r.Field<string>("BOUNDARY_VALUE")).ToArray();
ViewState["States"] = string.Join(",", allStates);
}
}
else
{
Response.Redirect("~/NotAuthorize.aspx", false);
}
}
else
{
Response.Redirect("~/NotAuthorize.aspx", false);
}
}
else
{
Response.Redirect("~/NotAuthorize.aspx", false);
}
}
catch (Exception ex)
{
throw ex;
}
}

you can create a Method to check connection using the url to svc , and which returns a boolean based on that you can able to see whether the Service is up or not
public bool checkConnection(){
var url = "http://nvmbd1bkh150v02/UMSService/UserProvider.svc";
bool tosend = false;
try
{
var myRequest = (HttpWebRequest)WebRequest.Create(url);
var response = (HttpWebResponse)myRequest.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
{
tosend = true ;
// it's at least in some way responsive
// but may be internally broken
// as you could find out if you called one of the methods for real
Debug.Write(string.Format("{0} Available", url));
}
else
{
tosend = false;
// well, at least it returned...
Debug.Write(string.Format("{0} Returned, but with status: {1}",
url, response.StatusDescription));
}
}
catch (Exception ex)
{
// not available at all, for some reason
Debug.Write(string.Format("{0} unavailable: {1}", url, ex.Message));
}
return tosend;
}

Validating digitaly signed PDF Spire.Pdf C#

So I am developing a web app that generates a PDF contract from a partial view, and then validates the digital signiture. I came accross an example here . The problem is that an exception is thrown when validating the signiture and for the life of me I cant figure out why...
Here is the code :
public async Task<ActionResult> Upload(HttpPostedFileBase FileUpload)
{
ActionResult retVal = View();
AspNetUser user = DbCtx.AspNetUsers.Find(User.Identity.GetUserId());
bool signitureIsValid = false;
string blobUrl = string.Empty;
if (FileUpload != null && FileUpload.ContentLength > 0)
{
string fileName = Guid.NewGuid().ToString() + RemoveAllSpaces(FileUpload.FileName);
string filePath = Path.Combine(System.Web.Hosting.HostingEnvironment.MapPath("~/Content/pdfs"), fileName);
FileUpload.SaveAs(filePath);
List<PdfSignature> signatures = new List<PdfSignature>();
using (var doc = new PdfDocument(filePath))
{
var form = (PdfFormWidget) doc.Form;
int count = 0;
try
{
count = form.FieldsWidget.Count;
}
catch
{
count = 0;
}
for (int i = 0; i < count; ++i)
{
var field = form.FieldsWidget[i] as PdfSignatureFieldWidget;
if (field != null && field.Signature != null)
{
PdfSignature signature = field.Signature;
signatures.Add(signature);
}
}
}
PdfSignature signatureOne = signatures[0];
try
{
signitureIsValid = signatureOne.VerifySignature(); // HERE SHE BLOWS !
if (signitureIsValid)
{
blobPactUrl = await BlobUtil.BasicStorageBlockBlobOperationsAsync(System.IO.File.ReadAllBytes(filePath));
if (!string.IsNullOrEmpty(blobPactUrl))
{
ApplicantInfo info = DbCtx.ApplicantInfoes.FirstOrDefault(x => x.UserId == user.Id);
info.URL = blobUrl;
info.SignatureIsValid = true;
info.ActivationDate = DateTime.Now;
info.ActiveUntill = DateTime.Now.AddYears(1);
DbCtx.Entry(info).State = System.Data.Entity.EntityState.Modified;
DbCtx.SaveChanges();
retVal = RedirectToAction("Publications");
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
System.IO.File.Delete(filePath);
}
}
return retVal;
}
Here is an image of
what it looks like when I'm debuging:
I have checked the signiture and it is valid and cerified... I know I'm missing something basic here... Please help me internet!

Just noticed that I posted this. . . Turns out that the problem was due to bug in the package itself. Upon asking the lovely people at E-Iceblue, the bug was recreated, solved and a new version of Spire.PDF was up on nuget within a week.
great job E-Iceblue, it worked fine :)

Not able to edit in entity framework with asp.net/c#

public ReturnMessage EditCategories(Category objCategory)
{
ReturnMessage objReturnMessage = new ReturnMessage();
try
{
Category objCategoryNew = db.Categories.Where(x => x.CategoryId == objCategory.CategoryId).FirstOrDefault();
if (objCategoryNew != null)
{
objCategoryNew = objCategory;
db.SaveChanges();
objReturnMessage.isSuccessfull = true;
objReturnMessage.responseMessage = "Successfully updated.";
}
else
{
objReturnMessage.isSuccessfull = false;
objReturnMessage.responseMessage = "Category not present.";
}
}
catch (Exception ex)
{
objReturnMessage.isSuccessfull = false;
objReturnMessage.responseMessage = ex.Message;
}
return objReturnMessage;
}
Everything goes fine there are no exceptions still the data isn't getting updated. I don't know what's the issue. Please help?

The line:
objCategoryNew = objCategory;
will not work out since you change the reference objCategoryNew to objCategory, not the object itself, what you have to do is to assign each property of objCategory to objCategoryNew, something like:
objCategoryNew.Pro1 = objCategory.Pro1;
objCategoryNew.Pro2 = objCategory.Pro2;
....

EventStore duplicate commit exception

UPDATE:
We are getting getting System.Data.SqlClient.SqlException. The message is:
Violation of PRIMARY KEY constraint 'PK_Commits'. Cannot insert duplicate key in object 'dbo.Commits'.\r\nThe statement has been terminated
It seems like EventStore is using streamid and commitid as unique id.
We use event store to append events as below.
public bool TryAppend(object[] content)
{
if (content == null)
throw new ArgumentNullException("content");
try
{
using (var stream = m_storage.OpenStream(m_streamID, 0, int.MaxValue))
{
var versionInStore = stream.StreamRevision;
content.ToList().ForEach(m =>
{
var version = ++versionInStore;
var key = string.Format("{0}-{1:00000000}", m.GetType().Name, version);
var savedMessage = new SavedRecord(key, version, m);
stream.Add(new EventMessage { Body = savedMessage });
});
stream.CommitChanges(Guid.NewGuid());
}
return true;
}
catch (Exception e)
{
m_logger.LogError(e);
return false;
}
}
The configuration of EventStore is as below. We are using Sql Serer 2008 as persistance store.
return Wireup.Init()
.LogToOutputWindow()
.UsingSqlPersistence(m_connectionName)
.WithDialect(new MsSqlDialect())
.EnlistInAmbientTransaction() // two-phase commit
.InitializeStorageEngine()
.UsingJsonSerialization()
.Compress()
.UsingSynchronousDispatchScheduler()
.DispatchTo(new DelegateMessageDispatcher(DispatchCommit))
.Build();
Any ideas why are gettin the dupplicate commit exception?
Thanks

Have got the same issue; in my case it was probably because of different threads was adding different events to the stream with same id at the same time.
Have writtent the following code to be able to retry adding events:
private void TryAddEvent(IStoreEvents storeEvents, IUserEvent anEvent, Guid streamId)
{
var isCommitSuccessful = false;
for (var i = 0; i < 10 && !isCommitSuccessful; i++)
{
try
{
using (var stream = storeEvents.OpenStream(streamId, 0, int.MaxValue))
{
stream.Add(new EventMessage {Body = anEvent});
if (stream.UncommittedEvents.All(e => e.Body != anEvent))
{
stream.Add(new EventMessage {Body = anEvent});
}
stream.CommitChanges(Guid.NewGuid());
}
isCommitSuccessful = true;
}
catch (Exception ex)
{
if (!(ex is SqlException) && !(ex is ConcurrencyException))
{
throw;
}
using (var stream = storeEvents.OpenStream(streamId, 0, int.MaxValue))
{
if (stream.CommittedEvents.Any(e => e.Body == anEvent))
{
isCommitSuccessful = true;
}
}
}
}
if (!isCommitSuccessful)
{
throw new ConcurrencyException(String.Format("Cannot add {0} to event store", anEvent.GetType()));
}
}
Hope it would help.