UniqueConstraint.UniqueConstraint(DataColumn[], Boolean) Constructor

Initializes a new instance of the UniqueConstraint class with an array of DataColumn objects to constrain, and a value specifying whether the constraint is a primary key.

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

public UniqueConstraint (
	DataColumn[] columns,
	bool isPrimaryKey
public UniqueConstraint (
	DataColumn[] columns, 
	boolean isPrimaryKey
public function UniqueConstraint (
	columns : DataColumn[], 
	isPrimaryKey : boolean
Not applicable.



An array of DataColumn objects to constrain.


true to indicate that the constraint is a primary key; otherwise, false.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0