MessageBox not able to copy content

Hello,

I am in a bit of tricky situation. I am trying to make a messagebox that shows the contents from some textboxes. That part goes fine, and its showing as it should. However, my issue is that I am not allowed to copy the contents that is being rendered.

Can anyone help me as to why I am not able to this - and how I can work around it?

I am able to copy this code, but when its using the value from the field - I am not allowed to.

My example code: http://ift.tt/12zCdML

Thanks,

- Christian

MessageBox not able to copy content