System.Data.UniqueConstraint.Clone C# (CSharp) Method

        internal override Constraint Clone(DataSet destination, bool ignorNSforTableLookup)
        {
            int iDest;
            if (ignorNSforTableLookup)
            {
                iDest = destination.Tables.IndexOf(Table.TableName);
            }
            else
            {
                iDest = destination.Tables.IndexOf(Table.TableName, Table.Namespace, false);// pass false for last param to be backward compatable
            }

            if (iDest < 0)
                return null;
            DataTable table = destination.Tables[iDest];

            int keys = ColumnsReference.Length;
            DataColumn[] columns = new DataColumn[keys];

            for (int i = 0; i < keys; i++)
            {
                DataColumn src = ColumnsReference[i];
                iDest = table.Columns.IndexOf(src.ColumnName);
                if (iDest < 0)
                    return null;
                columns[i] = table.Columns[iDest];
            }

            UniqueConstraint clone = new UniqueConstraint(ConstraintName, columns);

            // ...Extended Properties
            foreach (object key in ExtendedProperties.Keys)
            {
                clone.ExtendedProperties[key] = ExtendedProperties[key];
            }

            return clone;
        }