dsauthors.cs

Example-数据访问和更新 vc#.net编程制作

            }
            
            public authorsRow AddauthorsRow(string au_id, string au_lname, string au_fname, string city, string state, bool contract) {
                authorsRow rowauthorsRow = ((authorsRow)(this.NewRow()));
                rowauthorsRow.ItemArray = new object[] {
                        au_id,
                        au_lname,
                        au_fname,
                        city,
                        state,
                        contract};
                this.Rows.Add(rowauthorsRow);
                return rowauthorsRow;
            }
            
            public authorsRow FindByau_id(string au_id) {
                return ((authorsRow)(this.Rows.Find(new object[] {
                            au_id})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                authorsDataTable cln = ((authorsDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new authorsDataTable();
            }
            
            internal void InitVars() {
                this.columnau_id = this.Columns["au_id"];
                this.columnau_lname = this.Columns["au_lname"];
                this.columnau_fname = this.Columns["au_fname"];
                this.columncity = this.Columns["city"];
                this.columnstate = this.Columns["state"];
                this.columncontract = this.Columns["contract"];
            }
            
            private void InitClass() {
                this.columnau_id = new DataColumn("au_id", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnau_id);
                this.columnau_lname = new DataColumn("au_lname", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnau_lname);
                this.columnau_fname = new DataColumn("au_fname", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnau_fname);
                this.columncity = new DataColumn("city", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columncity);
                this.columnstate = new DataColumn("state", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnstate);
                this.columncontract = new DataColumn("contract", typeof(bool), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columncontract);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnau_id}, true));
                this.columnau_id.AllowDBNull = false;
                this.columnau_id.Unique = true;
                this.columnau_lname.AllowDBNull = false;
                this.columnau_fname.AllowDBNull = false;
                this.columncontract.AllowDBNull = false;
            }
            
            public authorsRow NewauthorsRow() {
                return ((authorsRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new authorsRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(authorsRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.authorsRowChanged != null)) {
                    this.authorsRowChanged(this, new authorsRowChangeEvent(((authorsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.authorsRowChanging != null)) {
                    this.authorsRowChanging(this, new authorsRowChangeEvent(((authorsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.authorsRowDeleted != null)) {
                    this.authorsRowDeleted(this, new authorsRowChangeEvent(((authorsRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.authorsRowDeleting != null)) {
                    this.authorsRowDeleting(this, new authorsRowChangeEvent(((authorsRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveauthorsRow(authorsRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class authorsRow : DataRow {
            
            private authorsDataTable tableauthors;
            
            internal authorsRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableauthors = ((authorsDataTable)(this.Table));
            }
            
            public string au_id {
                get {
                    return ((string)(this[this.tableauthors.au_idColumn]));
                }
                set {
                    this[this.tableauthors.au_idColumn] = value;
                }
            }
            
            public string au_lname {
                get {
                    return ((string)(this[this.tableauthors.au_lnameColumn]));
                }
                set {
                    this[this.tableauthors.au_lnameColumn] = value;
                }
            }
            
            public string au_fname {
                get {
                    return ((string)(this[this.tableauthors.au_fnameColumn]));
                }
                set {
                    this[this.tableauthors.au_fnameColumn] = value;
                }
            }
            
            public string city {
                get {
                    try {
                        return ((string)(this[this.tableauthors.cityColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableauthors.cityColumn] = value;
                }
            }
            
            public string state {
                get {
                    try {
                        return ((string)(this[this.tableauthors.stateColumn]));
                    }
                    catch (InvalidCastException e) {
                        throw new StrongTypingException("无法获取值，因为它是 DBNull。", e);
                    }
                }
                set {
                    this[this.tableauthors.stateColumn] = value;
                }
            }
            
            public bool contract {
                get {
                    return ((bool)(this[this.tableauthors.contractColumn]));
                }
                set {
                    this[this.tableauthors.contractColumn] = value;
                }
            }
            
            public bool IscityNull() {
                return this.IsNull(this.tableauthors.cityColumn);
            }
            
            public void SetcityNull() {
                this[this.tableauthors.cityColumn] = System.Convert.DBNull;
            }
            
            public bool IsstateNull() {
                return this.IsNull(this.tableauthors.stateColumn);
            }
            
            public void SetstateNull() {
                this[this.tableauthors.stateColumn] = System.Convert.DBNull;
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class authorsRowChangeEvent : EventArgs {
            
            private authorsRow eventRow;
            
            private DataRowAction eventAction;
            
            public authorsRowChangeEvent(authorsRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public authorsRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
    }
}