I am serializing an object to xml and would like to set an xmlns attribute to the root node.
eg:
...
<root xmlns="[specified url]">
...
</root>
I cant seem to have an xmlns property/attribute on the member or seem to add the namespace when serializing without a prefix?
Any ideas?
This can do it as following. For top level use XmlRoot and for Properties use XmlElement
[System.Xml.Serialization.XmlRoot(Namespace="http://topLevelNS")]
class MyClass
{
[System.Xml.Serialization.XmlElement(Namespace = "http://SomeOtherNS")]
public int MyVar { get; set; }
}
Related
I am receiving some XML that looks like this.
<?xml version="1.0"?>
<parent xmlns="urn:place-com:spec.2004">
<childA xmlns="">123</childA>
<childB xmlns="">456</childB>
</parent>
I'm deserializing it into a class with C#'s XmlSerializer. It works, except the blank child namespaces are giving me trouble. Their properties in the class are null.
I understand the blank namespace puts the element in the global namespace. Probably not what is intended, but what I am receiving none the less.
If I manually delete the xmlns="" attribute from the child element it works. If I fill out the attribute with xmlns="testNamespace" and add the following attribute to the property in the class, it works.
[XmlElement(Namespace="testNamespace")]
public string childA
{ ... }
However, leaving the XML as is, and adding the following attribute does not work.
[XmlElement(Namespace="")]
How can I specify that an element has a blank namespace for deserialization?
For the xml presented in question the following class works perfectly.
[XmlRoot("parent", Namespace = "urn:place-com:spec.2004", IsNullable = false)]
public class Parent
{
[XmlElement("childA", Namespace = "")]
public string ChildA { get; set; }
[XmlElement("childB", Namespace = "")]
public string ChildB { get; set; }
}
Can I somehow disable rendering of root element of collection?
This class with serialization attributes:
[XmlRoot(ElementName="SHOPITEM", Namespace="")]
public class ShopItem
{
[XmlElement("PRODUCTNAME")]
public string ProductName { get; set; }
[XmlArrayItem("VARIANT")]
public List<ShopItem> Variants { get; set; }
}
generates this XML:
<SHOPITEM xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<PRODUCTNAME>test</PRODUCTNAME>
<Variants>
<VARIANT>
<PRODUCTNAME>hi 1</PRODUCTNAME>
</VARIANT>
<VARIANT>
<PRODUCTNAME>hi 2</PRODUCTNAME>
</VARIANT>
</Variants>
</SHOPITEM>
I don't want <Variants> element here. What must I do?
Also I don't need xsi and xsd namespaces in root element...
To disable rendering of root element of collection, you must replace the attribute [XmlArrayItem] with [XmlElement] in your code.
For removing the xsi and xsd namespaces, create an XmlSerializerNamespaces instance with an empty namespace and pass it when you need to serialize your object.
Take a look on this example:
[XmlRoot("SHOPITEM")]
public class ShopItem
{
[XmlElement("PRODUCTNAME")]
public string ProductName { get; set; }
[XmlElement("VARIANT")] // was [XmlArrayItem]
public List<ShopItem> Variants { get; set; }
}
// ...
ShopItem item = new ShopItem()
{
ProductName = "test",
Variants = new List<ShopItem>()
{
new ShopItem{ ProductName = "hi 1" },
new ShopItem{ ProductName = "hi 2" }
}
};
// This will remove the xsi/xsd namespaces from serialization
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
XmlSerializer ser = new XmlSerializer(typeof(ShopItem));
ser.Serialize(Console.Out, item, ns); // Inform the XmlSerializerNamespaces here
I got this output:
<?xml version="1.0" encoding="ibm850"?>
<SHOPITEM>
<PRODUCTNAME>test</PRODUCTNAME>
<VARIANT>
<PRODUCTNAME>hi 1</PRODUCTNAME>
</VARIANT>
<VARIANT>
<PRODUCTNAME>hi 2</PRODUCTNAME>
</VARIANT>
</SHOPITEM>
Replace [XmlArrayItem("VARIANT")] with [XmlElement("VARIANT")].
I don't believe it is possible to remove this element using the default xml serialization (with attributes). If you could do this, then serializing your ShopItem class would result in badly formed xml (no root element) for the object, which is not allowed.
What you can do however, is manually implement IXmlSerializable. This will give you the sort of fine-grained control you a re after.
[Edit] - sorry - misread that you were trying to remove Variants, not SHOPITEM. To remove the List "outer" element, just mark it up with an [XmlElement] attribute rather than an [XmlArrayItem] attribute. This will cause the list entries to just use the specified element name, without wrapping the list in an outer element.
For removing the namespaces, this is controlled by the seriliazer itself, not the markup on the class.
I've just noticed that while I've updated this answer, Rubens Farias has provided an reply that shows you how to eliminate the namespace.
Can I somehow disable rendering of root element of collection?
This class with serialization attributes:
[XmlRoot(ElementName="SHOPITEM", Namespace="")]
public class ShopItem
{
[XmlElement("PRODUCTNAME")]
public string ProductName { get; set; }
[XmlArrayItem("VARIANT")]
public List<ShopItem> Variants { get; set; }
}
generates this XML:
<SHOPITEM xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<PRODUCTNAME>test</PRODUCTNAME>
<Variants>
<VARIANT>
<PRODUCTNAME>hi 1</PRODUCTNAME>
</VARIANT>
<VARIANT>
<PRODUCTNAME>hi 2</PRODUCTNAME>
</VARIANT>
</Variants>
</SHOPITEM>
I don't want <Variants> element here. What must I do?
Also I don't need xsi and xsd namespaces in root element...
To disable rendering of root element of collection, you must replace the attribute [XmlArrayItem] with [XmlElement] in your code.
For removing the xsi and xsd namespaces, create an XmlSerializerNamespaces instance with an empty namespace and pass it when you need to serialize your object.
Take a look on this example:
[XmlRoot("SHOPITEM")]
public class ShopItem
{
[XmlElement("PRODUCTNAME")]
public string ProductName { get; set; }
[XmlElement("VARIANT")] // was [XmlArrayItem]
public List<ShopItem> Variants { get; set; }
}
// ...
ShopItem item = new ShopItem()
{
ProductName = "test",
Variants = new List<ShopItem>()
{
new ShopItem{ ProductName = "hi 1" },
new ShopItem{ ProductName = "hi 2" }
}
};
// This will remove the xsi/xsd namespaces from serialization
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
XmlSerializer ser = new XmlSerializer(typeof(ShopItem));
ser.Serialize(Console.Out, item, ns); // Inform the XmlSerializerNamespaces here
I got this output:
<?xml version="1.0" encoding="ibm850"?>
<SHOPITEM>
<PRODUCTNAME>test</PRODUCTNAME>
<VARIANT>
<PRODUCTNAME>hi 1</PRODUCTNAME>
</VARIANT>
<VARIANT>
<PRODUCTNAME>hi 2</PRODUCTNAME>
</VARIANT>
</SHOPITEM>
Replace [XmlArrayItem("VARIANT")] with [XmlElement("VARIANT")].
I don't believe it is possible to remove this element using the default xml serialization (with attributes). If you could do this, then serializing your ShopItem class would result in badly formed xml (no root element) for the object, which is not allowed.
What you can do however, is manually implement IXmlSerializable. This will give you the sort of fine-grained control you a re after.
[Edit] - sorry - misread that you were trying to remove Variants, not SHOPITEM. To remove the List "outer" element, just mark it up with an [XmlElement] attribute rather than an [XmlArrayItem] attribute. This will cause the list entries to just use the specified element name, without wrapping the list in an outer element.
For removing the namespaces, this is controlled by the seriliazer itself, not the markup on the class.
I've just noticed that while I've updated this answer, Rubens Farias has provided an reply that shows you how to eliminate the namespace.
What is difference between XmlElement and XmlElementAttribute in c# xml serialization. I am facing an issue while xml serialization of an object.
Actually, I have 2 fields with the same name. 1 in Base class and other in child class and I need to set different element names for those to show in xml doc.
Well, It depends on your XML file structure. If the child element is a an xml tag, you should add XmlElement data annotation. If the property of your class is bound to an attribute related to the current node, then add an attribute data annotation.
[Serializable()]
public class Person
{
[System.Xml.Serialization.XmlElement("Name")]
public string Name{ get; set; }
[System.Xml.Serialization.XmlElement("Phone")]
public int Phone { get; set; }
[System.Xml.Serialization.XmlElement("Address ")]
public string Address { get; set; }
}
In this case your xml structure should like this:
<person>
<name>...</name>
<phone>...</phone>
<address>...</address>
</person>
Now if the properties represents child attributes, it will be like this:
<person name='...' phone='...' address='...'></person>
I have an xml that looks like this:
<Config>
<A></A>
<Template><B/><C/></Template>
</Config>
and I would like to deserialize it in to get the <Template><B/><C/></Template> bit as a XmlElement or XmlNode. But when I try like this:
public class Config
{
public string A;
public XmlElement Template;
}
the Template is set to <B/> only. Any ideas?
Decorate your Template member with an XmlAnyElement attribute. That should do the trick.