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ConstraintCollection.RemoveAt Method

Removes the Constraint object at the specified index from the collection.

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

public void RemoveAt(
	int index
)

Parameters

index
Type: System.Int32

The index of the Constraint to remove.

ExceptionCondition
IndexOutOfRangeException

The collection does not have a constraint at this index.

The IndexOf method returns the index of a specific Constraint.

Before using the RemoveAt 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.

The following example uses the IndexOf method together with the RemoveAt method to remove a constraint from the ConstraintCollection.

private void RemoveConstraint(ConstraintCollection constraints, 
    Constraint constraint)
{
    try
    {
        if(constraints.Contains(constraint.ConstraintName)) 
        {
            if(constraints.CanRemove(constraint)) 
            {
                constraints.RemoveAt(constraints.IndexOf(
                    constraint.ConstraintName));
            }
        }
    }
    catch(Exception e) 
    {
        // Process exception and return.
        Console.WriteLine("Exception of type {0} occurred.", 
            e.GetType());
    }
}

.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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