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POSharePoint 2010 Rename Document on Upload Fails in Explorer View
 

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    <p>I'm trying to implement a customization in SharePoint 2010 so that when a document is uploaded to a library, the file name is changed to include the Document ID in the name. (I know that people shouldn't worry about file names as much any more, but we have a lot of legacy files already named and users who like to have local copies).</p> <p>I was able to implement a custom Event Receiver on the ItemAdded event that renames the file by adding the Document ID before the file name. This works correctly from the web Upload.</p> <p>The problem is with the Explorer View. When I try to add the file using WebDAV in the Explorer View, I get two copies of the file. It seems that when a file is uploaded via the Web the events that fire are</p> <ol> <li>ItemAdding</li> <li>ItemAdded</li> </ol> <p>But when I copy/paste a file into Explorer View I see the following events:</p> <ol> <li>ItemAdding</li> <li>ItemAdded</li> <li>ItemAdding</li> <li>ItemAdded</li> <li>ItemUpdating</li> <li>ItemUpdated</li> </ol> <p>The result is I have two files with different names (since the Document IDs are different).</p> <p>I've found a lot of people talking about this issue online (<a href="http://blog.techardinal.com/2009/10/20/using-sharepoint-event-handlers-to-rename-documents-nice-idea-but-no-cigar.aspx" rel="nofollow">this</a> is the best article I found). Anyone have any other ideas? Would it make more sense to do this in a workflow instead of an event receiver? I could use a scheduled job instead, but that might be confusing to the user if the document name changed a few minutes later.</p> <p>This is my code that works great when using the Web upload but not when using Explorer View:</p> <pre><code>public override void ItemAdded(SPItemEventProperties properties) { try { SPListItem currentItem = properties.ListItem; if (currentItem["_dlc_DocId"] != null) { string docId = currentItem["_dlc_DocId"].ToString(); if (!currentItem["BaseName"].ToString().StartsWith(docId)) { EventFiringEnabled = false; currentItem["BaseName"] = docId + currentItem["BaseName"]; currentItem.SystemUpdate(); EventFiringEnabled = true; } } } catch (Exception ex) { //Probably should log an error here } base.ItemAdded(properties); } </code></pre>
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