XML prefix doesn't show up when no defined URI in ASP.Net -

basically trying generate xml following format:

<m:messageheader>   <m:date>2017-09-14></m:date>   <m:source>web</m:source> </m:messageheader>

below code:

dim msgheader xmlnode  msgheader = xml.createelement("m", "messageheader", "")

however, prefix 'm' doesn't appear in messsageheader. below output of above code:

<messageheader />

what should expected output?

because must specify namespaceuri.

if leave namespaceuri parameter empty or null, prefix omitted.

try:

msgheader = xml.createelement("m", "messageheader", "https://stackoverflow.com/")

ANy