northwinddataschema.cs

一个经典的apriori算法（c#实现）

            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                ProductsTableDataTable cln = ((ProductsTableDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new ProductsTableDataTable();
            }
            
            internal void InitVars() {
                this.columnProductID = this.Columns["ProductID"];
                this.columnProductName = this.Columns["ProductName"];
            }
            
            private void InitClass() {
                this.columnProductID = new DataColumn("ProductID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProductID);
                this.columnProductName = new DataColumn("ProductName", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProductName);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnProductID}, true));
                this.columnProductID.AllowDBNull = false;
                this.columnProductID.Unique = true;
            }
            
            public ProductsTableRow NewProductsTableRow() {
                return ((ProductsTableRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new ProductsTableRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(ProductsTableRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.ProductsTableRowChanged != null)) {
                    this.ProductsTableRowChanged(this, new ProductsTableRowChangeEvent(((ProductsTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.ProductsTableRowChanging != null)) {
                    this.ProductsTableRowChanging(this, new ProductsTableRowChangeEvent(((ProductsTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.ProductsTableRowDeleted != null)) {
                    this.ProductsTableRowDeleted(this, new ProductsTableRowChangeEvent(((ProductsTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.ProductsTableRowDeleting != null)) {
                    this.ProductsTableRowDeleting(this, new ProductsTableRowChangeEvent(((ProductsTableRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveProductsTableRow(ProductsTableRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class ProductsTableRow : DataRow {
            
            private ProductsTableDataTable tableProductsTable;
            
            internal ProductsTableRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableProductsTable = ((ProductsTableDataTable)(this.Table));
            }
            
            public int ProductID {
                get {
                    return ((int)(this[this.tableProductsTable.ProductIDColumn]));
                }
                set {
                    this[this.tableProductsTable.ProductIDColumn] = value;
                }
            }
            
            public string ProductName {
                get {
                    try {
                        return ((string)(this[this.tableProductsTable.ProductNameColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("Cannot get value because it is DBNull.", e);
                    }
                }
                set {
                    this[this.tableProductsTable.ProductNameColumn] = value;
                }
            }
            
            public bool IsProductNameNull() {
                return this.IsNull(this.tableProductsTable.ProductNameColumn);
            }
            
            public void SetProductNameNull() {
                this[this.tableProductsTable.ProductNameColumn] = System.Convert.DBNull;
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class ProductsTableRowChangeEvent : EventArgs {
            
            private ProductsTableRow eventRow;
            
            private DataRowAction eventAction;
            
            public ProductsTableRowChangeEvent(ProductsTableRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public ProductsTableRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class OrdersTableDataTable : DataTable, System.Collections.IEnumerable {
            
            private DataColumn columnOrderID;
            
            internal OrdersTableDataTable() : 
                    base("OrdersTable") {
                this.InitClass();
            }
            
            internal OrdersTableDataTable(DataTable table) : 
                    base(table.TableName) {
                if ((table.CaseSensitive != table.DataSet.CaseSensitive)) {
                    this.CaseSensitive = table.CaseSensitive;
                }
                if ((table.Locale.ToString() != table.DataSet.Locale.ToString())) {
                    this.Locale = table.Locale;
                }
                if ((table.Namespace != table.DataSet.Namespace)) {
                    this.Namespace = table.Namespace;
                }
                this.Prefix = table.Prefix;
                this.MinimumCapacity = table.MinimumCapacity;
                this.DisplayExpression = table.DisplayExpression;
            }
            
            [System.ComponentModel.Browsable(false)]
            public int Count {
                get {
                    return this.Rows.Count;
                }
            }
            
            internal DataColumn OrderIDColumn {
                get {
                    return this.columnOrderID;
                }
            }
            
            public OrdersTableRow this[int index] {
                get {
                    return ((OrdersTableRow)(this.Rows[index]));
                }
            }
            
            public event OrdersTableRowChangeEventHandler OrdersTableRowChanged;
            
            public event OrdersTableRowChangeEventHandler OrdersTableRowChanging;
            
            public event OrdersTableRowChangeEventHandler OrdersTableRowDeleted;
            
            public event OrdersTableRowChangeEventHandler OrdersTableRowDeleting;
            
            public void AddOrdersTableRow(OrdersTableRow row) {
                this.Rows.Add(row);
            }
            
            public OrdersTableRow AddOrdersTableRow(int OrderID) {
                OrdersTableRow rowOrdersTableRow = ((OrdersTableRow)(this.NewRow()));
                rowOrdersTableRow.ItemArray = new object[] {
                        OrderID};
                this.Rows.Add(rowOrdersTableRow);
                return rowOrdersTableRow;
            }
            
            public OrdersTableRow FindByOrderID(int OrderID) {
                return ((OrdersTableRow)(this.Rows.Find(new object[] {
                            OrderID})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                OrdersTableDataTable cln = ((OrdersTableDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new OrdersTableDataTable();
            }
            
            internal void InitVars() {
                this.columnOrderID = this.Columns["OrderID"];
            }
            
            private void InitClass() {
                this.columnOrderID = new DataColumn("OrderID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnOrderID);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnOrderID}, true));
                this.columnOrderID.AllowDBNull = false;
                this.columnOrderID.Unique = true;
            }
            
            public OrdersTableRow NewOrdersTableRow() {
                return ((OrdersTableRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new OrdersTableRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(OrdersTableRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.OrdersTableRowChanged != null)) {
                    this.OrdersTableRowChanged(this, new OrdersTableRowChangeEvent(((OrdersTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.OrdersTableRowChanging != null)) {
                    this.OrdersTableRowChanging(this, new OrdersTableRowChangeEvent(((OrdersTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.OrdersTableRowDeleted != null)) {
                    this.OrdersTableRowDeleted(this, new OrdersTableRowChangeEvent(((OrdersTableRow)(e.Row)), e.Action));
                }