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				| Is the field virtual? | 
			
			
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							VARIANT_BOOL IsFieldVirtual (     enum eFBookFld eFieldID ) | 
						 
					 
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						| Parameters |  | eFieldID |  [in] Identifier of the field, e.g. fbofSysNum (C++) or eFBookFld.fbofSysNum (C# / VB.NET).
	
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		 | Remark: In VBS, this field identifier enumerations cannot be used! You should use GetFieldID to get a valid field identifier. |  
	 
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							| See Also | 
						 
						
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			| Samples | 
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							C++ | 
						 
						
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 if (pFBook->IsFieldVirtual (fbofSysNum))
     // This field can not be updated.
 
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							C# | 
						 
						
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 if (oFBook.IsFieldVirtual (eFBookFld.fbofSysNum))
     // This field can not be updated.
 
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							VBS | 
						 
						
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 If oFBook.IsFieldVirtual(oFBook.GetFieldID("SysNum")) Then
     ' This field can not be updated.
 End If
 
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							VB.NET | 
						 
						
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 If oFBook.IsFieldVirtual(eFBookFld.fbofSysNum) Then
     ' This field can not be updated.
 End If
 
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