Delete Method
The Delete method of the SPFieldCollection class deletes the field with the specified internal name from the collection.
Parameters
strName A string that specifies the internal name of the field.
Example
The following code example deletes the field with the specified name from the Events list in all the subsites under a specified site.
This example requires using directives (Imports in Visual Basic) for both the Microsoft.SharePoint and Microsoft.SharePoint.WebControls namespaces.
Requirements
Platforms: Microsoft Windows Server 2003
Security: Code Access Security