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OdbcDataReader::IsDBNull Method

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

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

public:
virtual bool IsDBNull(
	int i
) override

Parameters

i
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)

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

.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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