ConstraintCollection.IndexOf Method

System.Data Namespace ConstraintCollection Class

Returns the index of the specified Constraint.

[ VB ] Overloads Protected Function IndexOf ( Constraint ) As Integer

[ C# ] protected int IndexOf ( Constraint );

[ C++ ] protected: int IndexOf ( Constraint* );

[ JScript ] protected function IndexOf ( Constraint ) : int;

Returns the index of the Constraint, specified by name.

[ VB ] Overloads Overridable Public Function IndexOf ( String ) As Integer

[ C# ] public virtual int IndexOf ( string );

[ C++ ] public: virtual int IndexOf ( String* );

[ JScript ] public function IndexOf ( String ) : int;

The following example uses the IndexOf method to return the index of a Constraint. The index is passed to the Contains method to determine if the collection contains the constraint, before removing it.

NOTE: This example uses one of the overloaded versions of IndexOf. For other examples that may be available, see the individual overload topics.

private void RemoveConstraint ( ConstraintCollection myConstraints, 
      Constraint myConstraint ) {
   try {
      if ( myConstraints.Contains ( myConstraint.ConstraintName ) ) {
         if ( myConstraints.CanRemove ( myConstraint ) ) {
            myConstraints.RemoveAt (
               myConstraints.IndexOf ( myConstraint.ConstraintName ) );
         }
      }
   }
   catch ( Exception myException ) {
      Response.Write ( myException.Message );
   }
}

Private Sub RemoveConstraint ( myConstraints As ConstraintCollection, _
      myConstraint As Constraint )
   Try
      If myConstraints.Contains ( myConstraint.ConstraintName ) Then
         If myConstraints.CanRemove ( myConstraint ) Then
            myConstraints.RemoveAt _
               ( myConstraints.IndexOf ( myConstraint.ConstraintName ) )
         End If
      End If

   Catch myException As Exception
      Response.Write ( myException.Message )
   End Try
End Sub

ConstraintCollection Members

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ConstraintCollection.IndexOf Method

Overload List

Example

See Also