ColumnAttribute.CanBeNull Property
Gets or sets whether a column can contain null values.
Namespace: System.Data.Linq.Mapping
Assembly: System.Data.Linq (in System.Data.Linq.dll)
If you set this value to false, the data in the corresponding column is assumed to be non-null.
 Note |
|---|
This property is duplicated from the DbType property for convenience. The CreateDatabase method uses only the DbType property. For this reason, you must specify whether a column can contain null values in the DbType property also. |
[Column(Storage="_LastName", DbType="NVarChar(20) NOT NULL", CanBeNull=false)]
public string LastName
{
get
{
return this._LastName;
}
set
{
if ((this._LastName != value))
{
this.OnLastNameChanging(value);
this.SendPropertyChanging();
this._LastName = value;
this.SendPropertyChanged("LastName");
this.OnLastNameChanged();
}
}
}
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
