dsmaster.cs

东软内部材料（六）ado .net相关

            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                CustomerListDataTable cln = ((CustomerListDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new CustomerListDataTable();
            }
            
            internal void InitVars() {
                this.columnCustomerID = this.Columns["CustomerID"];
                this.columnCompanyName = this.Columns["CompanyName"];
                this.columnCity = this.Columns["City"];
                this.columnCountry = this.Columns["Country"];
                this.columnPostalCode = this.Columns["PostalCode"];
                this.columnRegion = this.Columns["Region"];
            }
            
            private void InitClass() {
                this.columnCustomerID = new DataColumn("CustomerID", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnCustomerID);
                this.columnCompanyName = new DataColumn("CompanyName", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnCompanyName);
                this.columnCity = new DataColumn("City", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnCity);
                this.columnCountry = new DataColumn("Country", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnCountry);
                this.columnPostalCode = new DataColumn("PostalCode", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnPostalCode);
                this.columnRegion = new DataColumn("Region", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnRegion);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnCustomerID}, true));
                this.columnCustomerID.AllowDBNull = false;
                this.columnCustomerID.Unique = true;
                this.columnCompanyName.AllowDBNull = false;
            }
            
            public CustomerListRow NewCustomerListRow() {
                return ((CustomerListRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new CustomerListRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(CustomerListRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.CustomerListRowChanged != null)) {
                    this.CustomerListRowChanged(this, new CustomerListRowChangeEvent(((CustomerListRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.CustomerListRowChanging != null)) {
                    this.CustomerListRowChanging(this, new CustomerListRowChangeEvent(((CustomerListRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.CustomerListRowDeleted != null)) {
                    this.CustomerListRowDeleted(this, new CustomerListRowChangeEvent(((CustomerListRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.CustomerListRowDeleting != null)) {
                    this.CustomerListRowDeleting(this, new CustomerListRowChangeEvent(((CustomerListRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveCustomerListRow(CustomerListRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class CustomerListRow : DataRow {
            
            private CustomerListDataTable tableCustomerList;
            
            internal CustomerListRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableCustomerList = ((CustomerListDataTable)(this.Table));
            }
            
            public string CustomerID {
                get {
                    return ((string)(this[this.tableCustomerList.CustomerIDColumn]));
                }
                set {
                    this[this.tableCustomerList.CustomerIDColumn] = value;
                }
            }
            
            public string CompanyName {
                get {
                    return ((string)(this[this.tableCustomerList.CompanyNameColumn]));
                }
                set {
                    this[this.tableCustomerList.CompanyNameColumn] = value;
                }
            }
            
            public string City {
                get {
                    try {
                        return ((string)(this[this.tableCustomerList.CityColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("Cannot get value because it is DBNull.", e);
                    }
                }
                set {
                    this[this.tableCustomerList.CityColumn] = value;
                }
            }
            
            public string Country {
                get {
                    try {
                        return ((string)(this[this.tableCustomerList.CountryColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("Cannot get value because it is DBNull.", e);
                    }
                }
                set {
                    this[this.tableCustomerList.CountryColumn] = value;
                }
            }
            
            public string PostalCode {
                get {
                    try {
                        return ((string)(this[this.tableCustomerList.PostalCodeColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("Cannot get value because it is DBNull.", e);
                    }
                }
                set {
                    this[this.tableCustomerList.PostalCodeColumn] = value;
                }
            }
            
            public string Region {
                get {
                    try {
                        return ((string)(this[this.tableCustomerList.RegionColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("Cannot get value because it is DBNull.", e);
                    }
                }
                set {
                    this[this.tableCustomerList.RegionColumn] = value;
                }
            }
            
            public bool IsCityNull() {
                return this.IsNull(this.tableCustomerList.CityColumn);
            }
            
            public void SetCityNull() {
                this[this.tableCustomerList.CityColumn] = System.Convert.DBNull;
            }
            
            public bool IsCountryNull() {
                return this.IsNull(this.tableCustomerList.CountryColumn);
            }
            
            public void SetCountryNull() {
                this[this.tableCustomerList.CountryColumn] = System.Convert.DBNull;
            }
            
            public bool IsPostalCodeNull() {
                return this.IsNull(this.tableCustomerList.PostalCodeColumn);
            }
            
            public void SetPostalCodeNull() {
                this[this.tableCustomerList.PostalCodeColumn] = System.Convert.DBNull;
            }
            
            public bool IsRegionNull() {
                return this.IsNull(this.tableCustomerList.RegionColumn);
            }
            
            public void SetRegionNull() {
                this[this.tableCustomerList.RegionColumn] = System.Convert.DBNull;
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class CustomerListRowChangeEvent : EventArgs {
            
            private CustomerListRow eventRow;
            
            private DataRowAction eventAction;
            
            public CustomerListRowChangeEvent(CustomerListRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public CustomerListRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class OrderTotalsDataTable : DataTable, System.Collections.IEnumerable {
            
            private DataColumn columnEmployeeID;
            
            private DataColumn columnCustomerID;
            
            private DataColumn columnOrderID;
            
            private DataColumn columnOrderDate;
            
            private DataColumn columnSubtotal;
            
            internal OrderTotalsDataTable() : 
                    base("OrderTotals") {
                this.InitClass();
            }
            
            internal OrderTotalsDataTable(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 EmployeeIDColumn {
                get {