Hi Krishna_2011,
The context menu dom is create dynamically, every time you click the item, the context menu dom will be created again, you may create a custom core.js like this
document, and you may add custom code in the InsertFeatureMenuItems function. In the function, the js will enumerate every menu item in ECBItems table,you may write custom code to detect the
column of the item and disable or enable the menu item.
Hope that helps,
Thanks,
Lambda Zhao
TechNet Community Support
