Question

通常我使用这个类来创建一个sqlconnection：

namespace IntraFaz
{   
   class Tconex
   {
      public static SqlConnection GetConnection()
      {
         //string str = "Data Source=SQL-PC;Initial Catalog =ifdcontroladoria3;uid =sa;pwd = admin2012";

         string str = "Data Source=300.161.430.110 ;Initial Catalog =Pirulim;uid =sa;pwd = per#3";
         SqlConnection con = new SqlConnection(str);
         con.Open();

         return con;
      }
   }
}

我在表单中调用此类以使用此

创建新的sqlconnection

SqlConnection conec1 = Tconex.GetConnection();

我需要写这个类来获得两个我想要的东西

public static SqlConnection GetConnection()
{       
   string str = "Data Source=300.161.430.110 ;Initial Catalog =Pirulim;uid =sa;pwd = per#3";
   string str2 = "Data Source=300.161.430.112 ;Initial Catalog =Pirulim;uid =sa;pwd = per#4";

   SqlConnection con = new SqlConnection(str);
   con.Open();

   SqlConnection con = new SqlConnection(str2);
   con.Open();

   return con;
}

Answer 1

public static SqlConnection GetConnection()
{

    string str = "Data Source=300.161.430.110 ;Initial Catalog =Pirulim;uid =sa;pwd = per#3";


    SqlConnection con = new SqlConnection(str);
    con.Open();

    return con;
}

public static SqlConnection GetConnection2()
{

    string str2 = "Data Source=300.161.430.112 ;Initial Catalog =Pirulim;uid =sa;pwd = per#4";


    SqlConnection con = new SqlConnection(str2);
    con.Open();


    return con;
}

Answer 2

public static SqlConnection[] GetConnections() 
{
    SqlConnection con1 = new SqlConnection(str1);
    SqlConnection con2 = new SqlConnection(str2);
    con1.Open();
    con2.Open();

    return new SqlConnection[] { con1, con2 }; 
}

Answer 3

public static Tuple<SqlConnection, SqlConnection> GetTwoConnections()
{
    ...
    SqlConnection con1 = new SqlConnection(str1);
    SqlConnection con2 = new SqlConnection(str2);
    con1.Open();
    con2.Open();

    return Tuple.Create(con1, con2);
}

用法：

var cons = GetTwoConnections();
using (cons.Item1, cons.Item2)
{
    // use first connection as cons.Item1 and second one as cons.Item2
}

Answer 4

创建一个类来保存方法的结果返回。

public class TheseConnectinsHaveThisPurpose
{
    public SqlConnection ThisConnectionHasThisPurpose { get; set; }

    public SqlConnection ThisConnectionHasThisOtherPurpose { get; set; }
}

Answer 5

您的连接唯一不同的是密码，所以：

public static SqlConnection GetConnection(string pass)
   {   
       string str = "Data Source=300.161.430.110 ;Initial Catalog =Pirulim;uid =sa;pwd ="+pass;        
       SqlConnection con = new SqlConnection(str);
       con.Open();         
       return con;
   }

稍后实现如果其他参数改变（例如userid）你可以将它作为参数添加到你的方法......

两个连接的类

5 个答案: