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IDataParameter.IsNullable Property

Gets a value indicating whether the parameter accepts null values.

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

bool IsNullable { get; }

Property Value

Type: System.Boolean
true if null values are accepted; otherwise, false. The default is false.

Null values are handled using the DBNull class.

The following example creates an instance of the implementing class, SqlParameter, and sets some of its properties.

private static void AddSqlParameter(SqlCommand command, 
    string paramValue)
{
    SqlParameter parameter = new SqlParameter(
        "@Description", SqlDbType.VarChar);
    parameter.Value = paramValue;
    parameter.IsNullable = true;
    command.Parameters.Add(parameter);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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