The given key was not present in the dictionary while retrieving pre-image entity crm 2013 -

The given key was not present in the dictionary while retrieving pre-image entity crm 2013 -

i have registered pre_image name 'prentity' , alias 'prentity' , retrieving follow

entity pentity = (entity)context.preentityimages["prentity"];

but giving error 'the given key not nowadays in dictionary.'

if have registered plugin in create mode preimage not available. may reason why image not available.

please refer link below explains pre , post images.

https://community.dynamics.com/crm/b/crminogic/archive/2010/07/26/pre-image-38-post-image-explained-33.aspx

crm