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DBNull Field
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Convert.DBNull Field

A constant that represents a database column that is absent of data; that is, database null.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static readonly Object DBNull

The DBNull field is equivalent to DBNull.Value, as the following example shows.

Console.WriteLine(Convert.DBNull.Equals(DBNull.Value));
// Displays True.

.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

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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