Hi EnenDaveyBoy,

Do you mean the  XML Namespace  xmlns ?  See explanation :

https://stackoverflow.com/questions/1181888/what-does-xmlns-in-xml-mean 

https://www.w3schools.com/xml/xml_namespaces.asp 

To add xml namespace to element in c#, you can try :

https://stackoverflow.com/questions/2920142/how-to-add-xmlnamespace-to-a-xmldocument 

https://stackoverflow.com/questions/2810548/how-to-generate-tag-prefixes-using-xmlserializer 

If i misunderstand your scenario , please feel free to let me know .

Best Regards,

Nan Yu