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ConstraintCollection.Clear Method

Clears the collection of any Constraint objects.

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

public void Clear ()
public void Clear ()
public function Clear ()

The CollectionChanged event occurs if this action is successful.

The following example clears all constraints from the ConstraintCollection.


public static void ClearConstraints(DataSet dataSet) 
{
   foreach (DataTable table in dataSet.Tables)
     table.Constraints.Clear();


Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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