System.Data.OracleClient.OracleConnection不包含定義

Question

我得到這個錯誤CS1061：'System.Data.OracleClient.OracleConnection'沒有包含'searchDBSet'的定義，也沒有包含接受第一個的searchDBSet的擴展方法可以找到'System.Data.OracleClient.OracleConnection'類型的參數（缺少使用指令或程序集引用？）。我敢肯定，我有System.Data參考，我想我有繼承的問題，因爲我的代碼是不是recognized.Can請人幫忙解決這個issue.Thank你

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.Security; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Xml.Linq; 
using System.Collections; 
using System.Configuration; 
using System.Data; 
using System.Linq; 
using System.Data.OracleClient; 

public partial class users_Login : System.Web.UI.Page 
{ 
    OracleConnection oc = new OracleConnection("Data Source=**;Persist Security Info=True;User ID=****;Password=****;Unicode=false"); 
    protected void Page_Load(object sender, EventArgs e) 
    { 

    } 
    protected void btnLogin_Click(object sender, EventArgs e) 
    { 

     int flag = 0; 
     string user_name = loginUserName.Text; 
     string password = loginPassword.Text; 


     string qry = "select user_name,password from users where user_name='" + user_name + "' and password='" + password + "'"; 

     DataSet set = oc.searchDBSet(qry); 

     foreach (DataRow dr in set.Tables[0].Rows) 
     { 
      flag = 1; 
     } 

     if (flag == 1) 
     { 
      FormsAuthentication.RedirectFromLoginPage(user_name, true); 
     } 
     else 
     { 
      lblMessage.Visible = true; 
     } 

    } 

} 


my class1 code 
using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Data; 
using System.Data.OracleClient; 



public class Oracleconection 
{ 
    string connectionString; 
    private System.Data.OracleClient.OracleConnection connection; 
    private System.Data.OracleClient.OracleDataAdapter adapter; 
    private System.Data.OracleClient.OracleCommand command; 

    public Oracleconection(string host, string dbname, string username, String password) 
    { 
     try 
     { 
      //this.connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST="+host+")(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME="+dbname+")));User Id="+username+";Password="+password+";"; 
      this.connectionString = "Data Source=****;Persist Security Info=True;User ID=****;Password=****;Unicode=false"; 
      this.connection = new System.Data.OracleClient.OracleConnection(this.connectionString); 
      this.connection.Open(); 
      this.command = connection.CreateCommand(); 
      Console.WriteLine("Connected"); 
     } 
     catch (Exception e) 
     { 
      Console.WriteLine("Error while connecting:" + e.Message); 
     } 

    } 
    public DataTable searchDB(string query) 
    { 
     DataTable table = new DataTable(); 
     try 
     { 
      this.command.CommandText = query; 
      this.adapter = new System.Data.OracleClient.OracleDataAdapter(command); 
      this.adapter.Fill(table); 
     } 
     catch (Exception e) 
     { 
      Console.Write("Error:" + e); 
     } 
     return table; 
    } 


    public DataSet searchDBSet(string query) 
    { 
     DataSet ds = new DataSet(); 
     try 
     { 
      this.command.CommandText = query; 
      this.adapter = new System.Data.OracleClient.OracleDataAdapter(command); 
      this.adapter.Fill(ds); 
     } 
     catch (Exception e) 
     { 
      Console.Write("Error:" + e); 
     } 
     return ds; 
    } 

    public int updateDB(string query) 
    { 
     try 
     { 
      this.command.CommandText = query; 
      return this.command.ExecuteNonQuery(); 
     } 
     catch (Exception e) 
     { 
      Console.Write("Error:" + e); 
      return -1; 
     } 
    } 


    public void close() 
    { 
     connection.Close(); 
    } 
} 

Answer 1

類名是錯的。

你這樣做：

OracleConnection oc = new OracleConnection(...); 

更改到類：

Oracleconnection oc = new Oracleconnection(...);