c# - Asp.net 从访问数据库中获取值

Question

我正在尝试获取 Access 数据库中用户的所有详细信息。但我似乎无法将每列值保存到标签中。这是我正在使用的代码。UserId 也已经分配了一个值

  string connString = (@"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=DataDirectory|HorseDB.mdb");
  OleDbConnection conn = new OleDbConnection(connString);
  conn.Open();
  OleDbCommand cmd = conn.CreateCommand();
  cmd.CommandText = @"SELECT * FROM [Users] WHERE [UserId] = @UserId ";
  cmd.Parameters.AddWithValue("@UserId", UserId);
  OleDbDataReader dbReader = cmd.ExecuteReader();
  while (dbReader.Read())
  {
      accountUserIdLabel.Text = dbReader.GetValue(0).ToString();
      //Will add other labels once this works
  }
  dbReader.Close();
  conn.Close();