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Itemupdating afterproperties and field names

Posted on by Fenridal Posted in Correspondence 5 Comments ⇩

Consider this example, where I am checking whether a look up column value has been altered: It seems there is something strange with the parser for Office file types. For Microsoft Office document file types, any data that I set in ItemAdding event via AfterProperties was lost after the first time the item was edited. 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. June 6, I had the need to set Business Data and other column values in the ItemAdding event handler. Wednesday, September 21, Problems with "AfterProperties" in list event receivers This is to summarize the inconsistent behaviors I encountered when working with "AfterProperties" in "ItemUpdating" event handler on a custom SharePoint list in SP Setting AfterProperties for some columns was not working using the InternalName of the field. This was not the case when editing was done through SharePoint UI. I would have simply switched to using ItemAdded exclusively, since that seemed to retain the data in all cases, but my code was executing a call to the Business Data Catalog, and so was a little slow. My SharePoint list had a column named "Email". It looks like a bug where "AfterProperties" contains only the "ID" part of look-up and not the whole look-up value.

Itemupdating afterproperties and field names


Wednesday, September 21, Problems with "AfterProperties" in list event receivers This is to summarize the inconsistent behaviors I encountered when working with "AfterProperties" in "ItemUpdating" event handler on a custom SharePoint list in SP Setting AfterProperties for some columns was not working using the InternalName of the field. My SharePoint list had a column named "Email". June 6, I had the need to set Business Data and other column values in the ItemAdding event handler. It also seemed to create my second problem, where data I did set disappeared. This is something that is not documented, and lead me into a lot of trouble: Using the synchronous handler guaranteed that the values would be set. Unfortunately, the only resolution available was to check whether "AfterProperties" is NULL and in that case assume that the list item is updated through code somewhere else, and do nothing.. It seems there is something strange with the parser for Office file types. To solve this, I do the heavy lifting code in ItemAdding, and then simply do a resetting of the value in ItemAdded to ensure that it sticks. It was only by using the Display Name of the field that I could actually get any of the data to stick. AfterProperties["Email"] has the expected values. For Microsoft Office document file types, any data that I set in ItemAdding event via AfterProperties was lost after the first time the item was edited. Consider this example, where I am checking whether a look up column value has been altered: I had to use ItemAdding, because I needed the changes committed so that the values I set would be visible on the Edit Properties screen immediately after uploading a document. I would have simply switched to using ItemAdded exclusively, since that seemed to retain the data in all cases, but my code was executing a call to the Business Data Catalog, and so was a little slow. It looks like a bug where "AfterProperties" contains only the "ID" part of look-up and not the whole look-up value. This was not the case when editing was done through SharePoint UI. ToString ; if oldEmail! 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. Everything looked as it should through ItemUpdating, but somewhere in between ItemUpdating and ItemUpdated, the data was lost, and my values were set to empty strings. Generally a problem I would expect from an asynchronous handler. I wrote an "item-updating" event handler that will update a few other child lists with updated Email, when it was altered in the parent list.. But this was only for Microsoft Office document types, things were fine for image files, text files, xml files. If you are handling a "Lookup" column using "AfterProperties", then be careful. After a few days we noticed that a lot of items in those child lists, had empty email values.

Itemupdating afterproperties and field names


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5 comments on “Itemupdating afterproperties and field names
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