Expand Minimize

Do not inherit WebParts from Microsoft.SharePoint.WebPartPages.WebPart

WebParts should be inherited from the ASP.NET Webpart (System.Web.UI.WebControls.WebParts.WebPart). Do not inherit from the SharePoint WebPart.

CheckId SPC040213
TypeName DoNotInheritWebPartsFromSharePoint
Severity CriticalWarning
Type Assembly

Inherit the WebPart from System.Web.UI.WebControls.WebParts.WebPart. This is the recommended way. MSDN states:
When creating new Web Parts, you have the option of creating Web Parts that inherit from System.Web.UI.WebControls.WebParts.WebPart (recommended) or Microsoft.SharePoint.WebPartPages.WebPart. The SharePoint FoundationWebPart class exists primarily for the purpose of backward compatibility and to provide a small set of features that are not available in the System.Web.UI.WebControls.WebParts.WebPart class.

To suppress this violation in managed code add the following attribute to the method which contains the instruction (available since SPCAF version v5.2). Learn more about SuppressMessage here.

// Important: Ensure to have #define CODE_ANALYSIS at the beginning of your .cs file
[SuppressMessage("SPCAF.Rules.DesignGroup", "SPC040213:DoNotInheritWebPartsFromSharePoint", Justification = "Provide reason for suppression here")]
Disclaimer: The views and opinions expressed in this documentation and in SPCAF do not necessarily reflect the opinions and recommendations of Microsoft or any member of Microsoft. SPCAF and RENCORE are registered trademarks of Rencore. All other trademarks, service marks, collective marks, copyrights, registered names, and marks used or cited by this documentation are the property of their respective owners.