Object is not set to an instance of an object in econnect

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Posted on by Community Member

Hi All,

Im getting this error (Object is not set to an instance of an object) at which i highlited in red line.while im getting the Item XMLs from GP by using Econnect.Please help me .

using (eConnectMethods eConnectMethod = new eConnectMethods())

{
eConnectOut myRequest = new eConnectOut();
myRequest.DOCTYPE = ecQuery.DocumentType;
myRequest.OUTPUTTYPE = 2;
myRequest.FORLIST = 1;
myRequest.WhereClause = ecQuery.WhereClause;
RQeConnectOutType[] eConnectOutType =
new RQeConnectOutType[1] { new RQeConnectOutType() };
eConnectOutType[0].eConnectOut = myRequest;
eConnectType eConnectDoc = new eConnectType();
eConnectDoc.RQeConnectOutType = eConnectOutType;
// Serialize the object to produce an XML document
MemoryStream memStream = new MemoryStream();
XmlSerializer serializer = new XmlSerializer(typeof(eConnectType));
serializer.Serialize(memStream, eConnectDoc);
memStream.Position = 0;
XmlDocument myDoc = new XmlDocument();
myDoc.Load(memStream);
// Retrieve the specified customer document
result = eConnectMethod.GetEntity(sConnectionString, myDoc.OuterXml);
if (result == "<root></root>")
{
return "";
}
}

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Tim Wappat 5,703 on at

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RE: Object is not set to an instance of an object in econnect

Sorry been on other things for a day, web API is the clue, I see you have seen this other thread that I think is relevant...

community.dynamics.com/.../750245
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RE: Object is not set to an instance of an object in econnect

Hi Tim,

Even though i'm getting the Same error.actually i'm using Message Queuing and WEB API .Is there any chance that error with Web Api or Message Queuing ?.
Tim Wappat 5,703 on at

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RE: Object is not set to an instance of an object in econnect

Using the listing that follows got the result as shown ran as a console app. It also returns an item XML if I change it to a valid item in my database.

I would start from here and work out what is different in your setup.

Don't forget to wrap your memory stream in a using when you go to production though.

Tim.

using Microsoft.Dynamics.GP.eConnect; using Microsoft.Dynamics.GP.eConnect.Serialization; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; using System.Xml.Serialization; namespace ConsoleApp1 { class Program { static void Main(string[] args) { string connections = @"Data Source=LIVEGPHOST;Initial Catalog=AUDTS;Integrated Security=True"; using (eConnectMethods eConnectMethod = new eConnectMethods()) { eConnectOut myRequest = new eConnectOut(); myRequest.DOCTYPE = "Item"; myRequest.OUTPUTTYPE = 2; myRequest.FORLIST = 1; myRequest.WhereClause = "ITEMNMBR in ('#783T','100/300W','LENOVOMOBILE')"; RQeConnectOutType[] eConnectOutType = new RQeConnectOutType[1] { new RQeConnectOutType() }; eConnectOutType[0].eConnectOut = myRequest; eConnectType eConnectDoc = new eConnectType(); eConnectDoc.RQeConnectOutType = eConnectOutType; // Serialize the object to produce an XML document MemoryStream memStream = new MemoryStream(); XmlSerializer serializer = new XmlSerializer(typeof(eConnectType)); serializer.Serialize(memStream, eConnectDoc); memStream.Position = 0; XmlDocument myDoc = new XmlDocument(); myDoc.Load(memStream); // Retrieve the specified customer document Console.WriteLine("=== Requester Doc:"); Console.WriteLine(myDoc.OuterXml); Console.WriteLine(""); Console.WriteLine(""); Console.WriteLine("=== Result Doc:"); string result = eConnectMethod.GetEntity(connections, myDoc.OuterXml); Console.WriteLine(result); } } } }
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RE: Object is not set to an instance of an object in econnect

I set the break point at Getentity.i got below xml please see the below for the same.

<?xml version="1.0"?><eConnect xmlns:xsd="www.w3.org/.../XMLSchema" xmlns:xsi="www.w3.org/.../XMLSchema-instance"><RQeConnectOutType><eConnectProcessInfo xsi:nil="true" /><taRequesterTrxDisabler_Items xsi:nil="true" /><eConnectOut><DOCTYPE>Item</DOCTYPE><OUTPUTTYPE>2</OUTPUTTYPE><FORLIST>1</FORLIST><WhereClause>ITEMNMBR in ('#783T','100/300W','LENOVOMOBILE')</WhereClause></eConnectOut></RQeConnectOutType></eConnect>
Tim Wappat 5,703 on at

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RE: Object is not set to an instance of an object in econnect

I can't go much further, critical question to answer is the one about if the serializer has correctly generated your XML document before you submit it.

So if you set a break point on the GetEntity line and inspect the myDoc object, does can you see the XML in the OuterXml property?
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RE: Object is not set to an instance of an object in econnect

Hi Tim,

Thanks for responding,

I am trying to get DOC type is 'Item' and whereClause is 'Item number'.Please tell me if you want any else.
Tim Wappat 5,703 on at

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RE: Object is not set to an instance of an object in econnect

So if you set a break point on the GetEntity line and inspect the myDoc object, does can you see the XML in the OuterXml property?

I can running a similar version of your code. It happily tried to contact the server. I've not got your server nor do i know what you are querying so I can't test much beyond that.

Only changes are I don't know what your doctype or whereclause strings look like.

Tim