Question

在Asp.net mvc中，我试图打开一个sql连接，但它总是给我无效的连接致命错误。这是我的以下代码：

在Web.config中：

<connectionStrings>    
 <add name="test" connectionString="Data Source=test,3306;Initial catalog=test;User Id=xxxxx;password=xxxx;Trusted_Connection=False;Encrypt=True;"  providerName="System.Data.SqlClient" />

在Controller类中：

var sql = "select * from users where email = \"" + model.Email + "\" and password = \"" + model.Password +\"";
        System.Diagnostics.Debug.WriteLine("return url = "+sql);
        string connectionString = ConfigurationManager.ConnectionStrings["test"].ConnectionString;
        using (var conn = new SqlConnection(connectionString))
        {
            try
            {
                conn.Open();
                SqlCommand cmd = new SqlCommand(sql, conn);

                SqlDataReader dr = cmd.ExecuteReader();
                dr.Read();
                System.Diagnostics.Debug.WriteLine("output = " + dr.HasRows);
                conn.Close();
            }
            catch(Exception e)
            {
                System.Diagnostics.Debug.WriteLine("exception " + e.ToString());
            }


        }

它在conn.open（）;

上给出了以下异常

 System.InvalidOperationException: Internal connection fatal error. Error state: 18

任何人都可以在我的代码中提出错误的建议。

Answer 1

 public MySqlConnection GetMySqlConnection(string dataBase, string server,uint port,string userID,string pass)
 {
            MySqlConnectionStringBuilder myBuilder = new MySqlConnectionStringBuilder();
            myBuilder.Database = dataBase;
            myBuilder.Server = server;
            myBuilder.Port = port;
            myBuilder.UserID = userID;
            myBuilder.Password = pass;

            MySqlConnection myconn = new MySqlConnection(myBuilder.ConnectionString);

            myconn.Open();
            return myconn;
  }

说明您应该使用MySql而不是MS SQL。安装MySql连接器net和MySql for Visual Studio（“只是google他们”）

安装后：

您必须在参考文献中添加MySql.Data

你班上的

：使用MySql.Data.MySqlClient;

打开连接时内部连接致命错误

1 个答案: