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AutoCAD Map 3D 2009 Geospatial Platform Reference

From AutoCAD Map 3D Geospatial Platform API

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MgReader
Close
GetBLOB
GetBoolean
GetByte
GetCLOB
GetDateTime
GetDouble
GetGeometry
GetInt16
GetInt32
GetInt64
GetPropertyCount
GetPropertyName
GetPropertyType
GetRaster
GetReaderType
GetSingle
GetString
IsNull
ReadNext
virtual bool MgReader::IsNull ( CREFSTRING  propertyName  )  [pure virtual]

Determines whether the value of the specified property is null.

.NET Syntax
virtual bool IsNull(string propertyName);
Java Syntax
virtual boolean IsNull(String propertyName);
PHP Syntax
virtual bool IsNull(string propertyName);

Parameters:
propertyName (String/string) The property name.
Returns:
Returns true if the value is null; otherwise returns false.

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