OleDbDataReader.IsDBNull(Int32) Method

Reference

Definition

Namespace:: System.Data.OleDb

Assembly:: System.Data.OleDb.dll

Assembly:: System.Data.dll

Package:: System.Data.OleDb v10.0.0-preview.1.25080.5

Source:: OleDbDataReader.cs

Source:: OleDbDataReader.cs

Source:: OleDbDataReader.cs

Important

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

public:
 override bool IsDBNull(int ordinal);

public:
 virtual bool IsDBNull(int ordinal);

public override bool IsDBNull(int ordinal);

public bool IsDBNull(int ordinal);

override this.IsDBNull : int -> bool

abstract member IsDBNull : int -> bool
override this.IsDBNull : int -> bool

Public Overrides Function IsDBNull (ordinal As Integer) As Boolean

Public Function IsDBNull (ordinal As Integer) As Boolean

Parameters

ordinal: Int32

The zero-based column ordinal.

Returns

Boolean

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

Implements

IsDBNull(Int32)

Remarks

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.

Applies to

Tuote	Versiot
.NET	8 (package-provided), 9 (package-provided), 10 (package-provided)
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0 (package-provided)

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