SQL多重语句，插入无效-SQLmultiplestatements,INSERTnotworking

I am developing a web app and have encountered a problem. I need to insert username and ip address into a SQL database table "log" when someone tries (successfully or unsuccessfully) to login. ID, time and date are inserted automatically... For some reason I am unable to get it working in my login form. INSERT statement works ok if I initiate it from another form, but I can't get it working together with the SELECT statement I use for checking login credentials.

我正在开发一个web应用程序，遇到了一个问题。当有人尝试登录(成功或失败)时，我需要将用户名和ip地址插入到SQL数据库表“log”中。自动插入ID、时间和日期……由于某种原因，我无法让它在我的登录表单中工作。如果我从另一个表单发起它，插入语句可以工作，但是我无法让它与用于检查登录凭据的SELECT语句一起工作。

I have tried different solutions, but none of them inserts data into the table... It does not throw an error, it just doesn't insert a new row into "log" table.

我尝试过不同的解决方案，但没有一种方案会将数据插入到表中……它不会抛出错误，只是不会向“log”表插入新行。

Any help is appreciated. :)

任何帮助都是感激。:)

protected void btnLog_Click(object sender, EventArgs e)
{
    using (SqlConnection cOnn= new SqlConnection(ConfigurationManager.ConnectionStrings["dbConn"].ToString()))
    {
        string username = null;
        string password = null;
        string ipAddress = null;

        SymCryptography cryptic = new SymCryptography();
        SqlCommand cmdSelect = new SqlCommand();
        SqlCommand cmdLog = new SqlCommand();
        SqlDataReader myReader = null;

        cmdSelect.COnnection= conn;
        cmdLog.COnnection= conn;

        cmdSelect.CommandText = "SELECT * FROM uporabniki WHERE up_ime=@up_ime AND geslo=@geslo";
        cmdSelect.CommandType = CommandType.Text;
        cmdLog.CommandText = "INSERT INTO log (up_ime, ip) VALUES (@up_ime, @ip)";
        cmdLog.CommandType = CommandType.Text;

        cmdSelect.Parameters.Add("@up_ime", SqlDbType.NVarChar, 20).Value = tbUsr.Text;
        cmdSelect.Parameters.Add("@geslo", SqlDbType.NVarChar, 20).Value = cryptic.Encrypt(tbPwd.Text);
        cmdLog.Parameters.Add("@up_ime", SqlDbType.NVarChar, 20).Value = tbUsr.Text;
        cmdLog.Parameters.Add("@ip", SqlDbType.NVarChar, 20).Value = ipAddress;

        conn.Open();
        try
        {
            //cmdLog.ExecuteNonQuery();  I tried it here, but it doesn't work
            myReader = cmdSelect.ExecuteReader();
            if (myReader.Read())
            {
                username = myReader["up_ime"].ToString();
                password = myReader["geslo"].ToString();
                Session["rights"] = myReader["pravice"];
                Session["login"] = "OK";
                pravice = true;
            }
            myReader.Close();
            //cmdLog.ExecuteNonQuery();  I tried it here, but it doesn't work
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
        conn.Close();
    }
    //I tried to open connection again, but stil INSERT does not work
    /* using (SqlConnection cOnn= new SqlConnection(ConfigurationManager.ConnectionStrings["dbConn"].ToString()))
    {
        string ipAddress = null;
        SqlCommand cmdLog = new SqlCommand();
        cmdLog.COnnection= conn;
        cmdLog.CommandText = "INSERT INTO log (up_ime, ip) VALUES (@up_ime, @ip)";
        cmdLog.CommandType = CommandType.Text;
        cmdLog.Parameters.Add("@up_ime", SqlDbType.NVarChar, 20).Value = tbUsr.Text;
        cmdLog.Parameters.Add("@ip", SqlDbType.NVarChar, 20).Value = ipAddress;
        conn.Open();
        try
        {
            cmdLog.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
        conn.Close();
    }

    if (pravice == true)
    {
        Response.Redirect("Default.aspx");
    }
    else
    {
        Response.Redirect("Login.aspx");
    }*/ 
}

3 个解决方案

INSERT INTO log (up_ime, ip) VALUES (, )

    cmdLog.Parameters.Add("@up_ime", SqlDbType.NVarChar, 20).Value = tbUsr.Text;
    cmdLog.Parameters.Add("@ip", SqlDbType.NVarChar, 20).Value = ipAddress;

  cmdLog.Parameters.Add("@up_ime", tbUsr.Text);
  cmdLog.Parameters.Add("@ip",  ipAddress);

   conn.Open();

 //cmdLog.ExecuteNonQuery();  I tried it here, but it doesn't work