读别人代码有一个DataSetBook类，和DataSet数据集有关系，有很多代码，请问怎么产生的呢？
//------------------------------------------
// <autogenerated>
// This code was generated by a tool.
// Runtime Version: 1.1.4322.573
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </autogenerated>
//------------------------------------------

namespace Library {
using System;
using System.Data;
using System.Xml;
using System.Runtime.Serialization;


[Serializable()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Diagnostics.DebuggerStepThrough()]
[System.ComponentModel.ToolboxItem(true)]
public class DataSetBook : DataSet {

private BookDataTable tableBook;

public DataSetBook() {
this.InitClass();
System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler = new System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);
this.Tables.CollectionChanged += schemaChangedHandler;
this.Relations.CollectionChanged += schemaChangedHandler;
}

protected DataSetBook(SerializationInfo info, StreamingContext context) {
string strSchema = ((string)(info.GetValue("XmlSchema", typeof(string))));
if ((strSchema != null)) {
DataSet ds = new DataSet();
ds.ReadXmlSchema(new XmlTextReader(new System.IO.StringReader(strSchema)));
if ((ds.Tables["Book"] != null)) {
this.Tables.Add(new BookDataTable(ds.Tables["Book"]));
}
this.DataSetName = ds.DataSetName;
this.Prefix = ds.Prefix;
this.Namespace = ds.Namespace;

this.Locale = ds.Locale;
this.CaseSensitive = ds.CaseSensitive;
this.EnforceConstraints = ds.EnforceConstraints;
this.Merge(ds, false, System.Data.MissingSchemaAction.Add);
this.InitVars();
}
else {
this.InitClass();
}
this.GetSerializationData(info, context);
System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler = new System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);
this.Tables.CollectionChanged += schemaChangedHandler;
this.Relations.CollectionChanged += schemaChangedHandler;
}

[System.ComponentModel.Browsable(false)]
[System.ComponentModel.DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Content)]
public BookDataTable Book {
get {
return this.tableBook;
}
}

public override DataSet Clone() {
DataSetBook cln = ((DataSetBook)(base.Clone()));
cln.InitVars();
return cln;
}

protected override bool ShouldSerializeTables() {
return false;
}

protected override bool ShouldSerializeRelations() {
return false;
}

protected override void ReadXmlSerializable(XmlReader reader) {
this.Reset();

DataSet ds = new DataSet();
ds.ReadXml(reader);
if ((ds.Tables["Book"] != null)) {
this.Tables.Add(new BookDataTable(ds.Tables["Book"]));
}
this.DataSetName = ds.DataSetName;
this.Prefix = ds.Prefix;
this.Namespace = ds.Namespace;
this.Locale = ds.Locale;
this.CaseSensitive = ds.CaseSensitive;
this.EnforceConstraints = ds.EnforceConstraints;
this.Merge(ds, false, System.Data.MissingSchemaAction.Add);
this.InitVars();
}

protected override System.Xml.Schema.XmlSchema GetSchemaSerializable() {
System.IO.MemoryStream stream = new System.IO.MemoryStream();
this.WriteXmlSchema(new XmlTextWriter(stream, null));
stream.Position = 0;
return System.Xml.Schema.XmlSchema.Read(new XmlTextReader(stream), null);
}

internal void InitVars() {
this.tableBook = ((BookDataTable)(this.Tables["Book"]));
if ((this.tableBook != null)) {
this.tableBook.InitVars();
}
}

private void InitClass() {
this.DataSetName = "DataSetBook";
this.Prefix = "";
this.Namespace = "http://www.tempuri.org/DataSetBook.xsd";
this.Locale = new System.Globalization.CultureInfo("zh-CN");
this.CaseSensitive = false;
this.EnforceConstraints = true;
this.tableBook = new BookDataTable();

this.Tables.Add(this.tableBook);
}

private bool ShouldSerializeBook() {
return false;
}

private void SchemaChanged(object sender, System.ComponentModel.CollectionChangeEventArgs e) {
if ((e.Action == System.ComponentModel.CollectionChangeAction.Remove)) {
this.InitVars();
}
}

public delegate void BookRowChangeEventHandler(object sender, BookRowChangeEvent e);

[System.Diagnostics.DebuggerStepThrough()]
public class BookDataTable : DataTable, System.Collections.IEnumerable {

private DataColumn columnBookID;

private DataColumn columnBookName;

private DataColumn columnBookWriter;

private DataColumn columnBookPublish;

private DataColumn columnBookPublishDate;

private DataColumn columnBookPrice;

private DataColumn columnBookSort;

private DataColumn columnBookAmount;

private DataColumn columnBookRemain;

internal BookDataTable() :
base("Book") {
this.InitClass();
}

internal BookDataTable(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 BookIDColumn {
get {
return this.columnBookID;
}
}

internal DataColumn BookNameColumn {
get {
return this.columnBookName;

}
}

internal DataColumn BookWriterColumn {
get {
return this.columnBookWriter;
}
}

internal DataColumn BookPublishColumn {
get {
return this.columnBookPublish;
}
}

internal DataColumn BookPublishDateColumn {
get {
return this.columnBookPublishDate;
}
}

internal DataColumn BookPriceColumn {
get {
return this.columnBookPrice;
}
}

internal DataColumn BookSortColumn {
get {
return this.columnBookSort;
}
}

internal DataColumn BookAmountColumn {
get {
return this.columnBookAmount;
}

}

internal DataColumn BookRemainColumn {
get {
return this.columnBookRemain;
}
}

public BookRow this[int index] {
get {
return ((BookRow)(this.Rows[index]));
}
}

public event BookRowChangeEventHandler BookRowChanged;
下面还有 省略----------------------------------------
[解决办法]
http://msdn.microsoft.com/zh-cn/library/esbykkzb(v=vs.100).aspx