Tag Archives: SPListItem

How do you update the ‘Author’ or ‘Created by’ and ‘Editor’ or ‘Modified By / Last Modified’ fields of a list item (SPListItem)

Sometimes it’s useful to overwrite the created by and last modified by fields and get rid of that pesky ‘System Account’ !

Created By

The internal field name for the person who created a list item is ‘Author’ use SPBuiltInFieldId.Author to access this field. The display name for this field is ‘Created By’ it can be seen in the UI circled below:

SPListItem CreatedBy Author

Last modified

The internal field name for the person who created a list item is ‘Editor’ use SPBuiltInFieldId.Editor to access this field. The display name for this field is ‘Modified By’ it can be seen in the UI circled below:

SPListItem ModifiedBy Editor

Updating Created By, Modified By

The trick here is to call SPListItem.UpdateOverwriteVersion() instead of SPListItem.Update()

SPListItem item = list.Items[0];
item[SPBuiltInFieldId.Author] = "1;#Edward Wilde";
item[SPBuiltInFieldId.Editor] = "1;#Edward Wilde";
copiedItem.UpdateOverwriteVersion();
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