title: Single declaration of connection string in application
body: <p>In my asp.net application I have added the connection string in each page <code>Page_Load</code> function and declared the string as public in top of the page.</p>
  
  <p>I know this is wrong thing. The whole application is running the same connection, so I want to declare the connection string in only one place. Where should I declare the connection string? How can I access the connection string in each Connection?</p>
  
  <pre><code>public string connstring = "";
  
  protected void Page_Load(object sender, EventArgs e)
  {
      if (IsPostBack != true)
      {
          connstring = ConfigurationManager.ConnectionStrings["connString"].ToString();
          MySqlConnection connection = new MySqlConnection(connstring);
          // ----
      }
  }
  </code></pre>