'xsi' is an undeclared prefix using XmlDocument

Question

I am receiving \'xsi\' is an undeclared prefix using XmlDocument.

I am trying to read a file which has the following schema:

Answer 1

You are missing the xsinamespace declaration:

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

now your document should look something like this:

.....