Hello All,
I have developed page that uses template with custom HTML placeholder
based from listBox web control. It works fine but in edit mode I am
getting this error:
"Failed to load viewstate. The control tree into which viewstate is
being loaded must match the control tree that was used to save
viewstate during the previous request. For example, when adding
controls dynamically, the controls added during a post-back must match
the type and position of the controls added during the initial request.
"
Could anyone help me find out what do I need to do.
Thank you!
