EDIXMLOnline 

Using the generated classes

// Create EDI document type from proxy class generated from WSDL
SEF850.EdiDocument ediDoc = new WebServiceDemoClient.SEF850.EdiDocument();

// Define Interchange Header
ediDoc.InterchangeControlHeader = new InterchangeControlHeaderISA();
ediDoc.InterchangeControlHeader.AuthorizationInformationQualifier = "00";
ediDoc.InterchangeControlHeader.AuthorizationInformation = "          ";
ediDoc.InterchangeControlHeader.SecurityInformationQualifier = "00";
ediDoc.InterchangeControlHeader.SecurityInformation = "          ";
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// Define Functional Group
ediDoc.FunctionalGroupHeader = new FunctionalGroupHeaderGS();
ediDoc.FunctionalGroupHeader.FunctionalIdentifierCode = "PO";
ediDoc.FunctionalGroupHeader.ApplicationSendersCode = "SENDERGS";
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// Define 1st "Purchase Order" transactionset
ediDoc.TransactionSets = new PurchaseOrder[1];
ediDoc.TransactionSets[0] = new PurchaseOrder();
ediDoc.TransactionSets[0].TransactionSetHeader = new TransactionSetHeaderST();
ediDoc.TransactionSets[0].TransactionSetHeader.TransactionSetIdentifierCode = "850";
ediDoc.TransactionSets[0].TransactionSetHeader.TransactionSetControlNumber = "000000001";

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Generating an EDI file is done in a few simple stages

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// 1) Serialize edidocument object to Xml file (or memory stream).
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// 2) convert the file (or memory stream) to a byte array
byte[] data = ...;
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// 3) pass the byte array to the web service "Generate" operation
com.edixmlonline.www.ReturnPacket pckt = service.Generate(data, txtSEFId.Text, txtSessionID.Text);

// Reference the returned EDI contents (as a byte array)...
byte[] ediData = pckt.Payload;
System.Text.ASCIIEncoding encoding = new ASCIIEncoding();
txtEDIContent.Text = encoding.GetString(ediData);

Translating an EDI file is also done in a few simple stages

// 1) convert the file to a byte array
byte[] data = ...;

// 2) pass the byte array (file) and file name to the web service
com.edixmlonline.www.ReturnPacket pckt = service.Translate(data, txtSEFId.Text, txtSessionID.Text);

// 3) Reference the Xml contents as a bytearray
byte[] xmlData = pckt.Payload;
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// 4) Create an EDI document (referencing) object
SEF850.EdiDocument ediDoc = new SEF850.EdiDocument();

// 5) Deserialize the Xml string in memory into the EDI document object and query object properties
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Register for an account and start programming with the EDIXMLOnline web service. We provide you with a few SEF files in your account for you to use.