dsonetomany.cs

进销存

            public Order_DetailsRow AddOrder_DetailsRow(OrdersRow parentOrdersRowByOrderToDetails, int ProductID, System.Decimal UnitPrice, short Quantity, System.Decimal ItemTotal, string ProductName) {
                Order_DetailsRow rowOrder_DetailsRow = ((Order_DetailsRow)(this.NewRow()));
                rowOrder_DetailsRow.ItemArray = new object[] {
                        parentOrdersRowByOrderToDetails[0],
                        ProductID,
                        UnitPrice,
                        Quantity,
                        ItemTotal,
                        ProductName};
                this.Rows.Add(rowOrder_DetailsRow);
                return rowOrder_DetailsRow;
            }
            
            public Order_DetailsRow FindByOrderIDProductID(int OrderID, int ProductID) {
                return ((Order_DetailsRow)(this.Rows.Find(new object[] {
                            OrderID,
                            ProductID})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                Order_DetailsDataTable cln = ((Order_DetailsDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new Order_DetailsDataTable();
            }
            
            internal void InitVars() {
                this.columnOrderID = this.Columns["OrderID"];
                this.columnProductID = this.Columns["ProductID"];
                this.columnUnitPrice = this.Columns["UnitPrice"];
                this.columnQuantity = this.Columns["Quantity"];
                this.columnItemTotal = this.Columns["ItemTotal"];
                this.columnProductName = this.Columns["ProductName"];
            }
            
            private void InitClass() {
                this.columnOrderID = new DataColumn("OrderID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnOrderID);
                this.columnProductID = new DataColumn("ProductID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProductID);
                this.columnUnitPrice = new DataColumn("UnitPrice", typeof(System.Decimal), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnUnitPrice);
                this.columnQuantity = new DataColumn("Quantity", typeof(short), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnQuantity);
                this.columnItemTotal = new DataColumn("ItemTotal", typeof(System.Decimal), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnItemTotal);
                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.columnOrderID,
                                this.columnProductID}, true));
                this.columnOrderID.AllowDBNull = false;
                this.columnProductID.AllowDBNull = false;
                this.columnUnitPrice.AllowDBNull = false;
                this.columnQuantity.AllowDBNull = false;
                this.columnItemTotal.ReadOnly = true;
            }
            
            public Order_DetailsRow NewOrder_DetailsRow() {
                return ((Order_DetailsRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new Order_DetailsRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(Order_DetailsRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.Order_DetailsRowChanged != null)) {
                    this.Order_DetailsRowChanged(this, new Order_DetailsRowChangeEvent(((Order_DetailsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.Order_DetailsRowChanging != null)) {
                    this.Order_DetailsRowChanging(this, new Order_DetailsRowChangeEvent(((Order_DetailsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.Order_DetailsRowDeleted != null)) {
                    this.Order_DetailsRowDeleted(this, new Order_DetailsRowChangeEvent(((Order_DetailsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.Order_DetailsRowDeleting != null)) {
                    this.Order_DetailsRowDeleting(this, new Order_DetailsRowChangeEvent(((Order_DetailsRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveOrder_DetailsRow(Order_DetailsRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class Order_DetailsRow : DataRow {
            
            private Order_DetailsDataTable tableOrder_Details;
            
            internal Order_DetailsRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableOrder_Details = ((Order_DetailsDataTable)(this.Table));
            }
            
            public int OrderID {
                get {
                    return ((int)(this[this.tableOrder_Details.OrderIDColumn]));
                }
                set {
                    this[this.tableOrder_Details.OrderIDColumn] = value;
                }
            }
            
            public int ProductID {
                get {
                    return ((int)(this[this.tableOrder_Details.ProductIDColumn]));
                }
                set {
                    this[this.tableOrder_Details.ProductIDColumn] = value;
                }
            }
            
            public System.Decimal UnitPrice {
                get {
                    return ((System.Decimal)(this[this.tableOrder_Details.UnitPriceColumn]));
                }
                set {
                    this[this.tableOrder_Details.UnitPriceColumn] = value;
                }
            }
            
            public short Quantity {
                get {
                    return ((short)(this[this.tableOrder_Details.QuantityColumn]));
                }
                set {
                    this[this.tableOrder_Details.QuantityColumn] = value;
                }
            }
            
            public System.Decimal ItemTotal {
                get {
                    try {
                        return ((System.Decimal)(this[this.tableOrder_Details.ItemTotalColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableOrder_Details.ItemTotalColumn] = value;
                }
            }
            
            public string ProductName {
                get {
                    try {
                        return ((string)(this[this.tableOrder_Details.ProductNameColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableOrder_Details.ProductNameColumn] = value;
                }
            }
            
            public OrdersRow OrdersRow {
                get {
                    return ((OrdersRow)(this.GetParentRow(this.Table.ParentRelations["OrderToDetails"])));
                }
                set {
                    this.SetParentRow(value, this.Table.ParentRelations["OrderToDetails"]);
                }
            }
            
            public bool IsItemTotalNull() {
                return this.IsNull(this.tableOrder_Details.ItemTotalColumn);
            }
            
            public void SetItemTotalNull() {
                this[this.tableOrder_Details.ItemTotalColumn] = System.Convert.DBNull;
            }
            
            public bool IsProductNameNull() {
                return this.IsNull(this.tableOrder_Details.ProductNameColumn);
            }
            
            public void SetProductNameNull() {
                this[this.tableOrder_Details.ProductNameColumn] = System.Convert.DBNull;
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class Order_DetailsRowChangeEvent : EventArgs {
            
            private Order_DetailsRow eventRow;
            
            private DataRowAction eventAction;
            
            public Order_DetailsRowChangeEvent(Order_DetailsRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public Order_DetailsRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class OrdersDataTable : DataTable, System.Collections.IEnumerable {
            
            private DataColumn columnOrderID;
            
            private DataColumn columnCustomerID;
            
            private DataColumn columnEmployeeID;
            
            private DataColumn columnOrderDate;
            
            internal OrdersDataTable() : 
                    base("Orders") {
                this.InitClass();
            }
            
            internal OrdersDataTable(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;
                }
            }
            
            internal DataColumn CustomerIDColumn {
                get {
                    return this.columnCustomerID;
                }
            }
            
            internal DataColumn EmployeeIDColumn {
                get {
                    return this.columnEmployeeID;
                }
            }
            
            internal DataColumn OrderDateColumn {
                get {
                    return this.columnOrderDate;
                }
            }
            
            public OrdersRow this[int index] {
                get {
                    return ((OrdersRow)(this.Rows[index]));
                }
            }
            
            public event OrdersRowChangeEventHandler OrdersRowChanged;
            
            public event OrdersRowChangeEventHandler OrdersRowChanging;
            
            public event OrdersRowChangeEventHandler OrdersRowDeleted;
            
            public event OrdersRowChangeEventHandler OrdersRowDeleting;
            
            public void AddOrdersRow(OrdersRow row) {
                this.Rows.Add(row);
            }
            
            public OrdersRow AddOrdersRow(string CustomerID, int EmployeeID, System.DateTime OrderDate) {
                OrdersRow rowOrdersRow = ((OrdersRow)(this.NewRow()));
                rowOrdersRow.ItemArray = new object[] {
                        null,
                        CustomerID,
                        EmployeeID,
                        OrderDate};
                this.Rows.Add(rowOrdersRow);
                return rowOrdersRow;
            }
            
            public OrdersRow FindByOrderID(int OrderID) {
                return ((OrdersRow)(this.Rows.Find(new object[] {
                            OrderID})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }