ConstraintCollection.Add Method (String, DataColumn, Boolean)

 
System_CAPS_noteNote

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Constructs a new UniqueConstraint with the specified name, DataColumn, and value that indicates whether the column is a primary key, and adds it to the collection.

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

member Add : 
        name:string *
        column:DataColumn *
        primaryKey:bool -> Constraint

Parameters

name
Type: System.String

The name of the UniqueConstraint.

column
Type: System.Data.DataColumn

The DataColumn to which the constraint applies.

primaryKey
Type: System.Boolean

Specifies whether the column should be the primary key. If true, the column will be a primary key column.

Return Value

Type: System.Data.Constraint

A new UniqueConstraint.

Exception Condition
ArgumentException

The constraint already belongs to this collection.

-Or-

The constraint belongs to another collection.

DuplicateNameException

The collection already has a constraint with the specified name. (The comparison is not case-sensitive.)

The CollectionChanged event occurs if the constraint is added successfully.

The following example uses the Add method to create and add a new UniqueConstraint to a ConstraintCollection.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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