I am trying to add a custom filter option to the filter context menu that appears when you click the filter button above a column in a gridview. This custom filter option will search for empty string values "" within the column. I read some other related forum posts that pointed me towards the 'FilterPopupInitialized' event. However, when I tried to wire up this event handler, I can never seem to hit a breakpoint set on my code inside this method.
Any thoughts on why I can't seem to get to my breakpoint? Also, is this the right approach for adding a custom filter option to the gridview filter context menu?