Consuming SAP Web Service in ASP.NET fails

I'm working on a web service that will create orders in SAP using .NET. Right now when I run the code below, I receive no errors and no order is created. I was hoping someone could help.

    string message = "";

    // create initial connection
    Z_SALESORDER_CREATE createOrder = new Z_SALESORDER_CREATE();

    try
    {
        NetworkCredential cred = new NetworkCredential("password", "username");

        createOrder.Url = "http://saphost:8010/sap/bc/srt/wsdl/bndg_d0823E开发者_Go百科1C21F1A334DSE0001555D658D08/wsdl11/allinone/ws_policy/document?sap-client=110";
        createOrder.Credentials = cred;
    }
    catch (Exception ex){
        message = "An error occured." + ex.Message;
    }


    // ORDERS_HEADER_IN
    Bapisdhd1 order_header_in = new Bapisdhd1();
    order_header_in.DocType = "OR";
    order_header_in.CollectNo = "1109512";
    order_header_in.SalesOrg = "10090";
    order_header_in.DistrChan = "100";
    order_header_in.Division = "000";
    order_header_in.DlvBlock = "020";
    order_header_in.PurchNoC = "E-COMM ORDER TEST ORDER";

    // ORDER_ITEMS_IN
    Bapisditm order_items_in = new Bapisditm();
    order_items_in.ItmNumber = "198295";
    order_items_in.Material = "454659";
    order_items_in.GrossWght = 0.003M;
    order_items_in.NetWeight = 0.003M;
    order_items_in.UntofWght = "KG";

    Bapisditm order_items_in2 = new Bapisditm();
    order_items_in2.ItmNumber = "198425";
    order_items_in2.Material = "454664";
    order_items_in2.GrossWght = 0.003M;
    order_items_in2.NetWeight = 0.003M;
    order_items_in2.UntofWght = "KG";

    Bapisditm order_items_in3 = new Bapisditm();
    order_items_in3.ItmNumber = "198725";
    order_items_in3.Material = "454647";
    order_items_in3.GrossWght = 0.003M;
    order_items_in3.NetWeight = 0.003M;
    order_items_in3.UntofWght = "KG";

    Bapisditm order_items_in4 = new Bapisditm();
    order_items_in4.ItmNumber = "198275";
    order_items_in4.Material = "45696INK";
    order_items_in4.GrossWght = 0.003M;
    order_items_in4.NetWeight = 0.003M;
    order_items_in4.UntofWght = "KG";

    // ORDER_PARTNERS
    Bapiparnr order_partners = new Bapiparnr();
    order_partners.PartnRole = "SP";
    order_partners.PartnNumb = "110512";

    order_partners.PartnRole = "BP";
    order_partners.PartnNumb = "110512";

    order_partners.PartnRole = "PY";
    order_partners.PartnNumb = "110512";

    order_partners.PartnRole = "SH";
    order_partners.PartnNumb = "120109";

    Bapicond order_conditions = new Bapicond();
    order_conditions.ItmNumber = "000010";
    order_conditions.CondStNo = "013";
    order_conditions.CondCount = "01";
    order_conditions.CondType = "ZPRM";
    order_conditions.CondValue = 1;
    order_conditions.Currency = "USD";

    // commit transation
    Bapiret2 commit = new Bapiret2();
    message += commit.Message + commit.MessageV1 + commit.MessageV2 + commit.MessageV3 + commit.MessageV4 + commit.LogMsgNo + commit.LogNo;

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The issue is that I needed to build an array and insert it into the object. See Below.

Bapisdhd1 order_header_in = new Bapisdhd1();
order_header_in.DocType = "OR";
order_header_in.CollectNo = "1109512";
order_header_in.SalesOrg = "10090";
order_header_in.DistrChan = "100";
order_header_in.Division = "000";
order_header_in.DlvBlock = "020";
order_header_in.PurchNoC = "E-COMM ORDER TEST ORDER";
newOrder.OrderHeaderIn = order_header_in;

I also needed something to tie the zSalesOrderCreate object back to the Z_SALESORDER_CREATE method.

    ZSalesorderCreateResponse res = createOrder.ZSalesorderCreate(newOrder);

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While i'm not an expert in .Net, there is something stange here. BapiRet2 is not a method, but a class, and there is a structure with the same name in R/3 that is commonly used to get information on the execution of functions calls...

i think you're just creating the variable that will/should contain the answer of your webservice, and since you don't call the later, the variable is empty... thus the empty error message...

regards

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You receive no message because you never call the service. The proxy class Z_SALESORDER_CREATE should have a method with the same or almost the same name, that method actually calls the service. BAPIRET2 is only a structure that contains the return messages from the service. Prepare your call parameters, call the service method with these parameters and then check the BAPIRET2-structure for the results.