List View Update Event Args On Item Updating Item Canceling Item Editing Item Updated On Item Updated List View Class System.

If the name isn’t changed, the changes are saved to the Share Point list.
Before you can deploy the event receiver you have to change the file to bind the Update Adding event receiver to all custom lists.
The changed values can be retrieved from the After Properties of the incoming properties argument.
You could think that the current values are stored in the Before Properties of the item but that’s not true: the Before Properties are unreliable at this point. When the name of the planet is changed, the update is canceled and an error message is returned to the user.
List Item Item Adding No value No value Null Item Added No value No value New value Item Updating Original value Changed value Original value Item Updated Original value Changed value Changed value Item Deleting No value No value Original value Item Deleted No value No value Null Also, if you are going to try to compare Before/After values, watch out for these types: People fields, rich text fields (Note), and Date Time fields.
= After Value) Library Before Properties After Properties properties.
Once I got things working with the Display Name of the field, I then noticed that I had a problem with the data disappearing after I would edit the properties of the document.
But this was only for Microsoft Office document types, things were fine for image files, text files, xml files.
The issue occurs when installing the Enterprise Portal on a claims web application, so actually you will also face the same the issue on Share Point 2010 when using claims.