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UniqueConstraint Constructor (String, String[], Boolean)

UniqueConstraint Constructor (String, String[], Boolean)

Initializes a new instance of the UniqueConstraint class with the specified name, 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(
	string name,
	string[] columnNames,
	bool isPrimaryKey


Type: System.String

The name of the constraint.

Type: System.String[]

An array of DataColumn objects to constrain.

Type: System.Boolean

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

This constructor is provided for design time support in the Visual Studio .NET environment. UniqueConstraint objects created by using this constructor must then be added to the collection via AddRange. Columns with the specified names must exist at the time the method is called, or if BeginInit has been called prior to calling this constructor, the columns with the specified names must exist at the time that EndInit is called.

.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
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