IsDBNull(Int32) Method

In This Topic

Gets a value indicating whether the column contains non-existent or missing values.

Syntax

Visual Basic
C#

'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).

Reference

DbDataReaderBase Class
DbDataReaderBase Members
Overload List

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