Umbraco/Samples and Articles/Templates/ASPNetFormTag
The ASPNET_FORM tag
Often Umbraco macros will require an ASPNET_FORM tag to be wrapped around them in order to function correctly.
It is good practice to place this tag in a master template as in the following example.
<html> <head> </head> <body> <?ASPNET_FORM> <?UMBRACO_TEMPLATE_LOAD_CHILD/> </?ASPNET_FORM> </body> </html>