ColumnAttribute.CanBeNull Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets or sets whether a column can contain null values.
Namespace: System.Data.Linq.Mapping
Assembly: System.Data.Linq (in System.Data.Linq.dll)
Syntax
'Declaration
Public Property CanBeNull As Boolean
public bool CanBeNull { get; set; }
Property Value
Type: System.Boolean
Default = true.
Remarks
If you set this value to false, the data in the corresponding column is assumed to be non-null.
.gif "Note") 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. |
| Topic | Location |
|---|---|
| How to: Represent Columns as Allowing Null Values (LINQ to SQL) | LINQ to SQL |
| How to: Represent Columns as Allowing Null Values (LINQ to SQL) | LINQ to SQL |
Version Information
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.