IsDBNull Method (VistaDBDataReader)

In This Topic

Gets a value that indicates whether the column contains nonexistent or missing values. Gets a value that indicates whether the column contains nonexistent or missing values.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides NotOverridable Function IsDBNull( _
   ByVal ordinal As System.Integer _
) As System.Boolean

'Usage
 
Dim instance As VistaDBDataReader
Dim ordinal As System.Integer
Dim value As System.Boolean
 
value = instance.IsDBNull(ordinal)

public override System.bool IsDBNull( 
   System.int ordinal
)

Parameters

ordinal: The zero-based column ordinal.The zero-based column ordinal.

Return Value

true if the specified column is equivalent to System.DBNull; otherwise false.true if the specified column is equivalent to DBNull; otherwise false.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

VistaDBDataReader Class
VistaDBDataReader Members

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