XmlSchemaObject.Namespaces Property

Definition

Namespace:

System.Xml.Schema

Assemblies:

netstandard.dll, System.Xml.ReaderWriter.dll

Source:

XmlSchemaObject.cs

Gets or sets the XmlSerializerNamespaces to use with this schema object.

C#

public System.Xml.Serialization.XmlSerializerNamespaces Namespaces { get; set; }

Property Value

XmlSerializerNamespaces

The XmlSerializerNamespaces property for the schema object.

Examples

In the following example, the prefix myImpPrefix is added at the schema element level. The prefix is then used to qualify definitions that are imported from myImportNamespace.

C#

using System;
using System.Xml;
using System.Xml.Schema;

class XmlSchemaObject
{
    public static void Main()
    {
        XmlSchema s = new XmlSchema();
        s.TargetNamespace = "myNamespace";
        s.Namespaces.Add("myImpPrefix", "myImportNamespace");

        // Create the <xs:import> element.
        XmlSchemaImport import = new XmlSchemaImport();
        import.Namespace = "myImportNamespace";
        import.SchemaLocation = "http://www.example.com/myImportNamespace";
        s.Includes.Add(import);

        // Create an element and assign a type from imported schema.
        XmlSchemaElement elem = new XmlSchemaElement();
        elem.SchemaTypeName = new XmlQualifiedName("importType", "myImportNamespace");
        elem.Name = "element1";

        s.Items.Add(elem);
        s.Write(Console.Out);
    }
}

The example produces the following XML.

XML

<?xml version="1.0" encoding="IBM437"?>
<schema xmlns:myImpPrefix="myImportNamespace" targetNamespace="myNamespace" xmlns="http://www.w3.org/2001/XMLSchema">
  <import schemaLocation="http://www.microsoft.com/myImportNamespace" namespace="myImportNamespace" />
  <element name="element1" type="myImpPrefix:importType" />
</schema>

Remarks

This gives the Schema Object Model (SOM) the ability to add xmlns declarations. This is useful when you want to declare a prefix to qualify declarations from an imported schema or use in the xpath attribute of the xs:selector element.

You can also use the Namespaces property to change namespace prefixes in a schema. For example, you can change the prefix used by a schema for the W3C XML Schema namespace from xs to xsd as illustrated in the following example.

C#

XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();  
namespaces.Add("myChangedPrefix", "myImportNamespace");  
s.Namespaces = namespaces;  

Applies to