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Devart.Common Namespace / DbDataReaderBase Class / IsDBNull Method / IsDBNull(Int32) Method
The zero-based column ordinal.

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    IsDBNull(Int32) Method
    In This Topic
    Gets a value indicating whether the column contains non-existent or missing values.
    Syntax
    'Declaration
 
Public Overloads Overrides Function IsDBNull( _
   ByVal ordinal As Integer _
) As Boolean
    public override bool IsDBNull( 
   int ordinal
)

    Parameters

    ordinal
    The zero-based column ordinal.

    Return Value

    true if the specified column value is equivalent to System.DBNull; otherwise, false.
    Remarks
    To avoid raising an error, call this method to check for null column values before calling the typed Get methods (for example, GetBytes, GetChars, and so on).
    See Also

    Reference

    DbDataReaderBase Class
    DbDataReaderBase Members
    Overload List

     

     

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