Gets or sets the GUID that is used internally by the Web Part infrastructure as the unique identifier of a Web Part connection.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
The property cannot be personalized by individual users. The value of its WebPartStorageAttribute is Storage.Shared, which specifies that the property will be stored with the same value for all users. Only users with the Write web pages right can set this property. It can only be set or returned programmatically.