This method indicates whether or not the attribute being retrieved, specified by OracleConnection, pointer, and attribute name, is NULL.

Declaration

// C#
public static bool IsDBNull(OracleConnection con, IntPtr pUdt, string attrName);
 

Parameters

• con

  An OracleConnection instance.

• pUdt

  A pointer to an Oracle UDT.

• attrName

  The case-sensitive name of the attribute.

Return Value

True if the specified attribute is NULL; otherwise, false.

Exceptions

ArgumentException - The specified name is not a valid attribute name.

Remarks

This method is invoked from the IOracleCustomType.ToCustomObject method. The con and pUdt parameter is passed from the IOracleCustomType.ToCustomObject method to the OracleUdt.IsDBNull method. The attrName parameter is case-sensitive.