服务通信，即IIS wcf服务和Windows服务中托管的wcf

Question

我正在实现服务通信服务，即IIS wcf服务和Windows服务中托管的wcf

1. Windows服务中托管的一个WCF服务
2. 在Windows应用程序中使用上述服务，即在其后面有一个访问数据块的Exe，例如AccessDB1
3. 然后在IIS中托管一个wcf服务，该服务将拥有自己的访问权限，例如 AccessDB2
4. 所以最后有2个Accessdbs，从exe上点击一些按钮，将一些数据从DB2传输到DB。
5. 然后反过来将数据从AccessDB1传输到AccessDB2。

如何以这种方式做到这一点。我试过这段代码

• 创建Iservice1接口并声明两个方法 [服务合约] 公共接口IService1 {

  [OperationContract]
  string InsertUserDetails(UserDetails userInfo);
  
  [OperationContract]
  DataSet SelectUserDetails();
  

  }

• 在Service1.svc类

  中实现此方法

  公共类Service1：IService1 {    // string connetionString = null;     OleDbConnection cnn;     string connetionString = @“Provider = Microsoft.ACE.OLEDB.12.0; Data Source = D：\ Anand \ Database \ UserDB.accdb”;

  public DataSet SelectUserDetails()
  {
  
      OleDbConnection cnn;
  
      cnn = new OleDbConnection(connetionString);
      cnn.Open();
      OleDbCommand cmd = new OleDbCommand("select UserID,UserName,Country,Email from 
      UserRecord order by UserId ", cnn);
      OleDbDataAdapter da = new OleDbDataAdapter(cmd);
      DataSet ds = new DataSet();
      da.Fill(ds);
      cmd.ExecuteNonQuery();
      cnn.Close();
      return ds;
  }
  
  
  
  
  public string InsertUserDetails(UserDetails userInfo)
  {
  
      string Message;
  
      OleDbConnection cnn;         
      cnn = new OleDbConnection(connetionString);
      cnn.Open();
  
      string str = "insert into UserRecord values('"+userInfo.UserID+"','" + 
      userInfo.UserName + "','" + userInfo.Password + "','" + userInfo.Country + 
      "','" + userInfo.Email + "') ";
      OleDbCommand cmd = new OleDbCommand(str, cnn);
  
      try
      {
          int result = cmd.ExecuteNonQuery();
  
          if (result == 1)
          {
              Message = userInfo.UserName + " Details inserted successfully";
          }
          else
          {
              Message = userInfo.UserName + " Details not inserted successfully";
          }
          cnn.Close();
          return Message;
      }
      catch (Exception)
      {
  
          throw;
      }
  
  }
  

• 之后创建Windows服务并将服务引用提供给Windows服务并创建服务引用对象

  public partial class UserRegistration : Form
  

  {     ServiceReference1.Service1Client service = new ServiceReference1.Service1Client（）;

  public UserRegistration()
  {
      InitializeComponent();
      showdata(); 
  }
  
  private void showdata()  // to show the data in the DataGridView
  {
      DataSet ds = new DataSet();
      ds = service.SelectUserDetails();   
      dataGridView1.DataSource = ds.Tables[0];
      dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
  }
  
  private void button1_Click(object sender, EventArgs e)
  {
      ServiceReference1.UserDetails objuserdetail = new ServiceReference1.UserDetails(); // add type reference
      objuserdetail.UserID = Int32.Parse(txtuserId.Text);
      objuserdetail.UserName = txtUserName.Text;
      objuserdetail.Password = txtPass.Text;
      objuserdetail.Country = txtCountry.Text;
      objuserdetail.Email = txtEmailId.Text;
      service.InsertUserDetails(objuserdetail);
      showdata();
      Empty();
  }
  
  public void Empty()
  {
      txtCountry.Text = "";
      txtEmailId.Text = "";
      txtPass.Text = "";
      txtuserId.Text = "";
      txtUserName.Text = "";
  
  }
  

  }