OleDbDataReader.IsDBNull Method (Int32)


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


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.

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
Available since 1.1
Return to top