DbDataReader.IsDBNull(Int32) DbDataReader.IsDBNull(Int32) DbDataReader.IsDBNull(Int32) DbDataReader.IsDBNull(Int32) Method

Definition

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

public:
 abstract bool IsDBNull(int ordinal);
public abstract bool IsDBNull (int ordinal);
abstract member IsDBNull : int -> bool
Public MustOverride Function IsDBNull (ordinal As Integer) As Boolean

Parameters

ordinal
Int32 Int32 Int32 Int32

The zero-based column ordinal.

Returns

true if the specified column is equivalent to DBNull; otherwise false.

Implements

Remarks

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

Applies to

See Also