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OleDbDataReader.IsDBNull Method

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

Namespace:  System.Data.OleDb
Assembly:  System.Data (in System.Data.dll)

public override bool IsDBNull(
	int ordinal
)

Parameters

ordinal
Type: System.Int32

The zero-based column ordinal.

Return Value

Type: System.Boolean
true if the specified column value is equivalent to DBNull; otherwise, false.

Implements

IDataRecord.IsDBNull(Int32)

Call this method to look for null column values before calling the typed get methods (for example, GetByte, GetChar, and so on) to avoid raising an error.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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