ASP.NET - Error conexión

public SqlConnection ObtenerConexion(string pConnection)

{

    SqlConnection objConexion = new SqlConnection(ConfigurationSettings.AppSettings[pConnection].ToString());

    objConexion.Open();

    return objConexion;

}

public SqlConnection ObtenerConexion(string pConnection)

{

try

SqlConnection objConexion = null;

{

objConexion = new SqlConnection(ConfigurationSettings.AppSettings[pConnection].ToString());

objConexion.Open();

} cach (Exception ex) ´

{

    Console.WriteLine(ex.Message);

}

return objConexion;