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

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IsDBNull(Int32) Method
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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
 

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, GetByte, GetChar, and so on).
See Also