ASP.NET

try
      {
      string conStr = WebConfigurationManager.ConnectionStrings[0].ConnectionString;
      SqlDataAdapter adapter;
      DataTable ans = new DataTable();
      SqlConnection connection = new SqlConnection(conStr);
      SqlCommand command = new SqlCommand();
      command.CommandType = CommandType.StoredProcedure;
      command.CommandText = "usp_GetUserDetails";
       
      command.Parameters.Add("@UserName", SqlDbType.VarChar);
      command.Parameters.Add("@Password", SqlDbType.VarChar);
      command.Parameters["@UserName"].Value = user;
      command.Parameters["@UserName"].Direction = ParameterDirection.Input;
      command.Parameters["@Password"].Value = pass;
      command.Parameters["@Password"].Direction = ParameterDirection.Input;
       
      adapter = new SqlDataAdapter(command.CommandText, connection);
      adapter.Fill(ans);
       
      return ans;
      }
      catch (Exception ex)
      {
      throw ex;
      }

<authentication mode="Forms">
      <forms loginurl="login.aspx" defaulturl="default.aspx" cookieless="UseUri" timeout="30" slidingexpiration="true" />
  <authentication>></authentication>

FormsAuthentication.RedirectFromLoginPage(_loginCheck.memberID, False)