Question

Each user on my website has a reg_id. There are some emergency_contact_id‘s associated with this reg_id.

For example:

EmerContact_id  Reg_id    
  91              1    
  92              1    
  93              1    
  94              1    
  95              1

Now I want to store these EmerContact_id‘s into session like this:

Session["Emer1"]    
Session["Emer2"]    
Session["Emer3"]    
Session["Emer4"]    
Session["Emer5"]

How can I achieve this?

I am thinking of using:

while(reader.read()) { ... }

But I don’t know how to use it.

Answer 1

You can use MySqlDataReader and iterate through your results using an index marker, like this.

using (MySqlConnection dbConnection = new MySqlConnection("connectionstring"))
{
    dbConnection.Open();

    using (MySqlCommand dbCommand = new MySqlCommand("select EmerContact_id from [Table] order by EmerContact_id asc;", dbConnection))
    {
        using (MySqlDataReader dbReader = dbCommand.ExecuteReader())
        {
            int index = 1;

            while (dbReader.Read())
            {
                Session["Emer" + index.ToString()] = dbReader[0].ToString();

                index++;
            }
        }
    }

    dbConnection.Close();
}

You could also use a collection object like List and serialize this into the session.