datasetprovider.cs

《C#数据库项目案例导航》一书的配套光盘

                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new ProviderDataTable();
            }
            
            internal void InitVars() {
                this.columnProviderID = this.Columns["ProviderID"];
                this.columnProviderName = this.Columns["ProviderName"];
                this.columnProviderAddress = this.Columns["ProviderAddress"];
                this.columnProviderPhoneNo = this.Columns["ProviderPhoneNo"];
                this.columnProviderEmail = this.Columns["ProviderEmail"];
                this.columnProviderPeople = this.Columns["ProviderPeople"];
                this.columnProviderRemark = this.Columns["ProviderRemark"];
            }
            
            private void InitClass() {
                this.columnProviderID = new DataColumn("ProviderID", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderID);
                this.columnProviderName = new DataColumn("ProviderName", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderName);
                this.columnProviderAddress = new DataColumn("ProviderAddress", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderAddress);
                this.columnProviderPhoneNo = new DataColumn("ProviderPhoneNo", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderPhoneNo);
                this.columnProviderEmail = new DataColumn("ProviderEmail", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderEmail);
                this.columnProviderPeople = new DataColumn("ProviderPeople", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderPeople);
                this.columnProviderRemark = new DataColumn("ProviderRemark", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnProviderRemark);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnProviderID}, true));
                this.columnProviderID.AllowDBNull = false;
                this.columnProviderID.Unique = true;
            }
            
            public ProviderRow NewProviderRow() {
                return ((ProviderRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new ProviderRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(ProviderRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.ProviderRowChanged != null)) {
                    this.ProviderRowChanged(this, new ProviderRowChangeEvent(((ProviderRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.ProviderRowChanging != null)) {
                    this.ProviderRowChanging(this, new ProviderRowChangeEvent(((ProviderRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.ProviderRowDeleted != null)) {
                    this.ProviderRowDeleted(this, new ProviderRowChangeEvent(((ProviderRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.ProviderRowDeleting != null)) {
                    this.ProviderRowDeleting(this, new ProviderRowChangeEvent(((ProviderRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveProviderRow(ProviderRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class ProviderRow : DataRow {
            
            private ProviderDataTable tableProvider;
            
            internal ProviderRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableProvider = ((ProviderDataTable)(this.Table));
            }
            
            public string ProviderID {
                get {
                    return ((string)(this[this.tableProvider.ProviderIDColumn]));
                }
                set {
                    this[this.tableProvider.ProviderIDColumn] = value;
                }
            }
            
            public string ProviderName {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderNameColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderNameColumn] = value;
                }
            }
            
            public string ProviderAddress {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderAddressColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderAddressColumn] = value;
                }
            }
            
            public string ProviderPhoneNo {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderPhoneNoColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderPhoneNoColumn] = value;
                }
            }
            
            public string ProviderEmail {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderEmailColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderEmailColumn] = value;
                }
            }
            
            public string ProviderPeople {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderPeopleColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderPeopleColumn] = value;
                }
            }
            
            public string ProviderRemark {
                get {
                    try {
                        return ((string)(this[this.tableProvider.ProviderRemarkColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableProvider.ProviderRemarkColumn] = value;
                }
            }
            
            public bool IsProviderNameNull() {
                return this.IsNull(this.tableProvider.ProviderNameColumn);
            }
            
            public void SetProviderNameNull() {
                this[this.tableProvider.ProviderNameColumn] = System.Convert.DBNull;
            }
            
            public bool IsProviderAddressNull() {
                return this.IsNull(this.tableProvider.ProviderAddressColumn);
            }
            
            public void SetProviderAddressNull() {
                this[this.tableProvider.ProviderAddressColumn] = System.Convert.DBNull;
            }
            
            public bool IsProviderPhoneNoNull() {
                return this.IsNull(this.tableProvider.ProviderPhoneNoColumn);
            }
            
            public void SetProviderPhoneNoNull() {
                this[this.tableProvider.ProviderPhoneNoColumn] = System.Convert.DBNull;
            }
            
            public bool IsProviderEmailNull() {
                return this.IsNull(this.tableProvider.ProviderEmailColumn);
            }
            
            public void SetProviderEmailNull() {
                this[this.tableProvider.ProviderEmailColumn] = System.Convert.DBNull;
            }
            
            public bool IsProviderPeopleNull() {
                return this.IsNull(this.tableProvider.ProviderPeopleColumn);
            }
            
            public void SetProviderPeopleNull() {
                this[this.tableProvider.ProviderPeopleColumn] = System.Convert.DBNull;
            }
            
            public bool IsProviderRemarkNull() {
                return this.IsNull(this.tableProvider.ProviderRemarkColumn);
            }
            
            public void SetProviderRemarkNull() {
                this[this.tableProvider.ProviderRemarkColumn] = System.Convert.DBNull;
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class ProviderRowChangeEvent : EventArgs {
            
            private ProviderRow eventRow;
            
            private DataRowAction eventAction;
            
            public ProviderRowChangeEvent(ProviderRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public ProviderRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
    }
}