How to build XML String from XSD then send to Web Service


I need some guidance please.  I'm pretty new to XML and Web Services and need direction.

Using VS2005 and Framework 2.0 I need to build an XML string that will be sent via a Windows Forms client to a Web service.  The folks who wrote this Web Service didn't make things very easy for using a .Net Proxy Class to create a client application.

Here's the WSDL (fragment) for the Method that I need to consume....

<s:element name="SaveData">
        <s:element minOccurs="0" maxOccurs="1" name="xml" type="s:string" />

I do have an XML sample for the string that I need to build.  From that sample I've used 'xsd.exe' to build a schema and again 'xsd.exe' to generate classes.

My plan is to update the appropriate properties in these Classes and then create an XML string that will subsequently be sent to the Web Service via a SoapClient.

I'm stuck at how to actually create/populate the XML string once I've updated the properties in the generated classes.

Help please!!!!!



11/10/2008 3:53:58 PM 7071 articles. 0 followers. Follow

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Use the XmlSerializer, something like this (haven't had time to test):


StringBuilder sb = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(sb))
    XmlSerializer ser = new XmlSerializer(typeof(MyClass));
    ser.Serialize(writer, myObject);
string xmlString = sb.ToString();
John Saunders | MVP – Connected System Developer
11/10/2008 6:28:04 PM

Thanks John...  That definately put me on the right track.  I have a couple of questions if you don't mind.

I'm using the following code:

            // Build the xml string
            StringBuilder sb = new StringBuilder();
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Encoding = Encoding.UTF8;
            settings.Indent = true;
            //settings.OmitXmlDeclaration = true;
            //settings.NewLineOnAttributes = true;

            using (XmlWriter writer = XmlWriter.Create(sb, settings))
                XmlSerializer ser = new XmlSerializer(typeof(SaveOrder));
                ser.Serialize(writer, so);

            string xmlString = sb.ToString();

that produces this XML:

<?xml version="1.0" encoding="utf-16"?>
<SaveOrder xmlns:xsi="" xmlns:xsd="" username="xxx" pwd="xyz" xmlns="urn:save-order-schema">
    <BillTo Company="LaZBoy" Address1="1234 Some St." City="HighPoint" State="NC" />

My first question is: Why does the Xml Declaration say 'encoding="utf-16"' when I have set it to utf8 ?

Second:  How can I shape the first line of the root element so that I get rid of the xmlns:xsi and xmlns:xsd attributes and move the final xmlns= attribute before the other attributes?  In other words I want the line to look like:

<SaveOrder xmlns="urn:save-order-schema" username="xxx" pwd="xyz" >



11/10/2008 8:59:33 PM

It will always be UTF-16 if you write to a string, since strings are always Unicode. If you really need a different encoding, you can serialize to a MemoryStream.

John Saunders | MVP – Connected System Developer
11/11/2008 3:43:16 PM

how do you pass your xml to web service?


11/17/2008 5:47:18 PM

I'm sorry, but I have no idea who you're asking, or what question you are asking. Please start a new thread, and please be more specific in your question.

John Saunders | MVP – Connected System Developer
11/17/2008 11:03:39 PM

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