Are there any info how SharePoint filters read-only fields not to be shown when we edit list properties?! As I understand it's controled by SPROC in [AllUserData] table. The question is actualy raised by requirement to show the calculated field in Document Information Panel. But after detailed investigation I found that sharepoint ignores all read-only fields for rendering and doesn't show them neither in ListFormWebPart (when we edit list properties) nor in DIP.Just wanted to clarify if it's only "Readonly" property in field that affects the visibility or there are other combinations. SharePoint Tips & Tricks Portal | Microsoft MVP | My Blog | My twitter

Hi, The document information panel displays a field for each content type property, or column, the user can edit; the EditForm.aspx page is used to edit the columns in the item. But the calculated column is read only and cannot be edited, so it will not be in the document information panel and in the EditForm.aspx page for editing. I think it is not possible to display calculated column in document information panel. If you want to display the calculated column in EditForm.aspx page, the workaround is to create a custom list form for EditForm.aspx, and add the column to the form, set its “ControlMode” as “display”. For more information about creating a custom list form, please refer to: http://office.microsoft.com/en-us/sharepointdesigner/HA101191111033.aspx Thanks for your understanding. Xue-Mei Chang

Xue-Mei, The link you provided is very useful for creating a custom EditForm.aspx page. However, I do not see information about how to "add the column to the form, set its "ControlMode" as "display". Can you please help me understand exactly what code should be entered in which part of the page to accomplish displaying a field as read-only? Thank you - Alex