How to add xsi schemalocation to root c # object XmlSerializer

Question

I am using XmlSerializer to create an object representing an XML file and now i want to add a schemalocation to the rootelement of my xml file. I can add namespaces like the

Answer 1

The XSD.exe generates partial classes, so you can add your own separate partial class to hold things like xsi:schemaLocation as fields or properties.

So, adding to @Petru Gardea's sample elementB class, you only need to create another file in your project and add this partial class:

public partial class elementB 
{
    [XmlAttributeAttribute("schemaLocation", Namespace="http://www.w3.org/2001/XMLSchema-instance")]
    public string xsiSchemaLocation = "http://www.acme.com/xml/OrderXML-1-0.xsd";
}

There is one gotcha that I ran into doing this and that was by default xsd.exe does not add a namespace to the generated file(s). When you create this partial class of your own, it will most likely be in a namespace. Since <default namespace> and an explicitly defined namespace do not match, partial won't work. So, you need to use the namespace option on xsd.exe to actually get the generated classes into your namespace.