# UniqueKeyConstraint {{< rawhtml >}}

Class UniqueKeyConstraint

Inheritance
object
Constraint
UniqueKeyConstraint
Implements
IConstraint
Inherited Members
Constraint.ColumnNames
Constraint.ConstraintName
object.Equals(object)
object.Equals(object, object)
object.GetHashCode()
object.GetType()
object.ReferenceEquals(object, object)
object.ToString()
Namespace: ETLBox.ControlFlow
Assembly: ETLBox.dll
Syntax
{{< /rawhtml >}} ```C# public sealed class UniqueKeyConstraint : Constraint, IConstraint ``` {{< rawhtml >}}

Constructors

UniqueKeyConstraint()

Declaration
{{< /rawhtml >}} ```C# public UniqueKeyConstraint() ``` {{< rawhtml >}}

UniqueKeyConstraint(IList<string>)

Declaration
{{< /rawhtml >}} ```C# public UniqueKeyConstraint(IList columnNames) ``` {{< rawhtml >}}
Parameters
Type Name Description
IList<string> columnNames

UniqueKeyConstraint(string)

Declaration
{{< /rawhtml >}} ```C# public UniqueKeyConstraint(string columnName) ``` {{< rawhtml >}}
Parameters
Type Name Description
string columnName

Implements

IConstraint
{{< /rawhtml >}}