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ConstraintCollection.Remove Method (Constraint)

Removes the specified Constraint from the collection.

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

public void Remove (
	Constraint constraint
public void Remove (
	Constraint constraint
public function Remove (
	constraint : Constraint
Not applicable.



The Constraint to remove.

Exception typeCondition


The constraint argument is a null reference (Nothing in Visual Basic).


The constraint does not belong to the collection.

Before using the Remove method, you can use the Contains method to determine whether the collection contains the target Constraint, and the CanRemove method to determine whether a Constraint can be removed.

The CollectionChanged event occurs if the constraint is successfully removed.

private void RemoveConstraint(DataTable table, 
    Constraint constraint)

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, 1.0

XNA Framework

Supported in: 1.0