Question

我是这个网站的新手。我目前正在研究wcf。我试图通过这项艰苦的工作来实现一些目标，但我遇到了一些问题。我在我的MS Visual Stuido 2015中运行了WCF服务，它有本地类名为AccountBalance，这个类有几个字符串属性，如account_number，account_balace等。我创建了数据库在MS Sql server中。目前我在控制台应用程序中使用wcf服务。我正在尝试使用帐号作为密钥从控制台窗口中的数据库中检索记录。当我输入帐号时，它应该在控制台应用程序中显示来自数据库的其余记录，但我收到错误说，我无法运行它。 无法从'string'转换为MyService.AccountBalanceRequest' 这是继承自另一个基类的类代码。

           [DataContract]
         public class AccountBalanceRequest : Current_Account_Details
            {
    string account_number;

    [DataMember]
    public string Account_Number
    {
        get { return account_number; }
        set { account_number = value; }
    }
}

}

这是ADO.NET CODE ..

      public bool AccountBalanceCheek(AccountBalanceRequest accountNumber)
    {
        using (SqlConnection conn = new SqlConnection(ConnectionString))
        {
            conn.Open();
            using (SqlCommand cmd = new SqlCommand("SELECT * FROM 
             Current_Account_Details WHERE Account_Number ='" + 
              accountNumber.Account_Number + "'", conn))
            {
                cmd.Parameters.AddWithValue("@Account_Number", 
                accountNumber.Account_Number);
               cmd.CommandType = CommandType.Text;
                cmd.ExecuteNonQuery();
                return true;

            }

        }
    }

这是控制台应用程序代码..

      public static void Balance()
    {
        MyService.HalifaxCurrentAccountServiceClient currentAccount = new MyService.HalifaxCurrentAccountServiceClient("NetTcpBinding_IHalifaxCurrentAccou
            ntService");

        MyService.AccountBalanceRequest cs = new MyService.AccountBalanceRequest();


        string AccountNumber;


        Console.WriteLine("\nEnter your Account Number--------:");
        AccountNumber = Console.ReadLine();
        cs.Account_Number = AccountNumber;
         MyService.AccountBalanceRequest cs1 = 

     currentAccount.AccountBalanceCheek(AccountNumber);//Error on this line.

                Console.WriteLine("Your Account Number is :" + cs.Account_Number);
                Console.WriteLine("Your Account Type :" + cs.Account_Balance);
                Console.WriteLine("Your Account Account Fee :" + cs.Account_Fee);
                Console.WriteLine("Your Account Balance:" + cs.Account_Balance);
                Console.WriteLine("Your Account Over Draft Limit :" + cs.Over_Draft_Limit);

                Console.Write("--------------------------");
                Console.ReadLine();




    }

我也尝试过这种方式。代码确实上升了任何错误但没有给出预期的结果。这是代码。

  public static void Balance()
    {
        MyService.HalifaxCurrentAccountServiceClient currentAccount = new MyService.HalifaxCurrentAccountServiceClient("NetTcpBinding_IHalifaxCurrentAccountService");
        MyService.AccountBalanceRequest cs = new MyService.AccountBalanceRequest();


        string AccountNumber;


        Console.WriteLine("\nEnter your Account Number--------:");
        AccountNumber = Console.ReadLine();
        cs.Account_Number = AccountNumber;
        // MyService.AccountBalanceRequest cs1 = currentAccount.AccountBalanceCheek(AccountNumber);



       if (currentAccount.AccountBalanceCheek(cs))
        {

                Console.WriteLine("Your Account Number is :" + cs.Account_Number);
                Console.WriteLine("Your Account Type :" + cs.Account_Balance);
                Console.WriteLine("Your Account Account Fee :" + cs.Account_Fee);
                Console.WriteLine("Your Account Balance:" + cs.Account_Balance);
                Console.WriteLine("Your Account Over Draft Limit :" + cs.Over_Draft_Limit);

                Console.Write("--------------------------");
                Console.ReadLine();
                //Console.Clear();


       }

    }

以下是输出的图片。This is image of the out put

Answer 1

正确的方法是：

currentAccount.AccountBalanceCheek(cs);

不

currentAccount.AccountBalanceCheek(AccountNumber);

因为参数类型为MyService.AccountBalanceRequest，而非string。

我希望对你有所帮助:)。

在控制台应用程序

1 个答案: