using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks; namespace SCF.Contracts
{[DataContract]public class SQLError{private string _operation;private string _errorMessage;public SQLError(string operation, string errorMessage){this._operation = operation;this._errorMessage = errorMessage;}[DataMember]public string Operation{get { return _operation; }set { _operation = value; }} [DataMember]public string ErrorMessage{get { return _errorMessage; }set { _errorMessage = value; }}}}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;namespace SCF.Contracts
{// 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IBookService”。
[ServiceContract]public interface IBookService{
[OperationContract]string GetBook(string Id);[OperationContract]string AddBook(string book);[OperationContract][FaultContract(typeof(SQLError))]string EditBook(string book);[OperationContract]string Search(string Category, string searchString);}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Data.Entity;
using SCF.Contracts;
using SCF.Model;
using SCF.Common;namespace SCF.WcfService
{// 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、svc 和配置文件中的类名“BookService”。// 注意: 为了启动 WCF 测试客户端以测试此服务，请在解决方案资源管理器中选择 BookService.svc 或 BookService.svc.cs，然后开始调试。public class BookService : IBookService{Entities db = new Entities();public string AddBook(string mbook){try{Books book = XMLHelper.DeSerializer<Books>(mbook);db.Books.Add(book);db.SaveChanges();}catch (Exception ex){return ex.Message;}                    return "true";        }public string EditBook(string mbook){try{Books book = XMLHelper.DeSerializer<Books>(mbook);db.Entry(book).State = EntityState.Added;db.SaveChanges();}catch (Exception ex){//return ex.Message;               SQLError error = new SQLError("更新数据库操作", ex.Message);string reason = string.Empty;if (ex.InnerException != null){reason = string.Format("{0}。{1}"ex.Message, ex.InnerException.Message);}else reason = ex.Message;throw new FaultException<SQLError>(error, new FaultReason(reason), new FaultCode("Edit"));}return "true";} public string GetBook(string Id){        int bookId = Convert.ToInt32(Id);Books book= db.Books.Find(bookId);string xml=XMLHelper.ToXML<Books>(book);return xml;//throw new NotImplementedException();
        }public string Search(string Category, string searchString){var cateLst = new List<string>();var cateQry = from d in db.Booksorderby d.Categoryselect d.Category;cateLst.AddRange(cateQry.Distinct());      var books = from m in db.Booksselect m;if (!String.IsNullOrEmpty(searchString)){books = books.Where(s => s.Name.Contains(searchString));}List<Books> list = null;if (string.IsNullOrEmpty(Category)){list = books.ToList<Books>();}else{list = books.Where(x => x.Category == Category).ToList<Books>();}return XMLHelper.ToXML<List<Books>>(list);}}}

using SCF.Contracts;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using SCF.Model;
using SCF.Common;namespace WinClient
{public partial class FrmBook : Form{public FrmBook(){InitializeComponent();}private void ShowBook(){Books book = XMLHelper.DeSerializer<Books>(textBoxMsg.Text);txtBookId.Text = book.BookID.ToString();txtAuthorID.Text = book.AuthorID.ToString();textBoxName.Text = book.Name;textBoxCategory.Text = book.Category.ToString();textBoxPrice.Text = book.Price.ToString();textBoxRating.Text = book.Rating.ToString();textBoxNumberofcopies.Text = book.Numberofcopies.ToString();dateTimePickerPublishDate.Text = book.PublishDate.ToString();}private void btnSearch_Click(object sender, EventArgs e){BookServiceRef.BookServiceClient bookSvrClient = new BookServiceRef.BookServiceClient();textBoxMsg.Text = bookSvrClient.Search(string.Empty, string.Empty);List<Books> books = XMLHelper.DeSerializer<List<Books>>(textBoxMsg.Text);gridBooks.DataSource = books;}private void buttonSave_Click(object sender, EventArgs e){try{using (ChannelFactory<IBookService> channelFactory = new ChannelFactory<IBookService>("WSHttpBinding_IBookService")){IBookService proxy = channelFactory.CreateChannel();using (proxy as IDisposable){if (string.IsNullOrEmpty(txtBookId.Text)){textBoxMsg.Text = proxy.AddBook(GetBookInfo());}elsetextBoxMsg.Text = proxy.EditBook(GetBookInfo());}}}catch (FaultException<SQLError> ex){SQLError error = ex.Detail;textBoxMsg.Text = string.Format("抛出一个服务端错误。\r\n\t错误代码:{0}\n\t错误原因:{1}\r\n\t操作:{2}\r\n\t错误信息:{3}", ex.Code, ex.Reason, error.Operation, error.ErrorMessage);}catch (Exception ex){if (ex.InnerException != null){textBoxMsg.Text = ex.Message + ex.InnerException.Message;}elsetextBoxMsg.Text = ex.Message;}}public String GetBookInfo(){Books book = new Books();book.AuthorID = NumberHelper.ToInt(txtAuthorID.Text);book.BookID = NumberHelper.ToInt(txtBookId.Text);book.Category = textBoxCategory.Text;book.Name = textBoxName.Text;book.Numberofcopies = NumberHelper.ToInt(textBoxNumberofcopies.Text);book.Price = NumberHelper.ToDecimal(textBoxPrice.Text);book.PublishDate = dateTimePickerPublishDate.Value;book.Rating = textBoxRating.Text;textBoxMsg.Text = XMLHelper.ToXML<Books>(book);return textBoxMsg.Text;}}
}