SPC040213: Do not inherit WebParts from Microsoft.SharePoint.WebPartPages.WebPart

SPC040701: Do not make SiteDefinition visible in the whole farm

SPC042101: Declare attribute 'Description' in Features

SPC042102: Declare attribute 'Version' in Features

SPC042103: Make Features with scope 'Farm' or 'WebApplication' visible

SPC042104: Consider to make Feature with scope 'Web' or 'Site' hidden

SPC042106: Declare attribute 'Title' and 'Description' in FeatureActivitationDependencies

SPC042107: Define attribute 'ReceiverAssembly' in Feature as full qualified assembly name

SPC042201: Declare all FieldTypes in a single file

SPC045201: Declare attribute 'Inherits' in ContentTypes

SPC045203: Define attribute 'ID' in ContentTypes uppercase

SPC045401: Declare 'TemplateType' and 'FeatureId' for external ListInstance

SPC045801: Declare attribute 'Description' in CustomActionGroup

SPC046101: Declare attribute 'Sequence' in DelegateControl.

SPC046102: Declare attribute 'Id' in DelegateControl.

SPC046401: Declare property 'Title' and 'Description' in WebPart

SPC046901: Do not write in ASPX Pages 'Register' tags in a single line

SPC046902: Avoid inline JavaScript in ASPX Pages

SPC046903: Avoid inline CSS in ASPX Pages

SPC040213: Do not inherit WebParts from Microsoft.SharePoint.WebPartPages.WebPart

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

TypeName:	DoNotInheritWebPartsFromSharePoint
CheckId:	SPC040213
Severity:	CriticalWarning
Type:	AssemblyFileReference

Resolution

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.

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