1 文本格式

/// <summary>
/// 车站信息类 class
/// </summary>
public class Station
{
    /// <summary>
    /// 编号
    /// </summary>
    public int Id { get; set; } = 0;
    /// <summary>
    /// 车站名
    /// </summary>
    public string Name { get; set; } = string.Empty;

    public Station(int id, string name)
    {
        this.Id = id;
        this.Name = name;
    }
}

// 列表的初值
List<Station> stations = new List<Station>() {
    new Station(1,"北京"),
    new Station(2,"石家庄"),
    new Station(3,"香河"),
    new Station(4,"唐山"),
    new Station(5,"北戴河"),
    new Station(6,"秦皇岛"),
    new Station(7,"廊坊"),
    new Station(8,"天津"),
};

/// <summary>
/// 《小白学程序》第七课：列表（List）应用之二————编制高铁车次信息表
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button7_Click(object sender, EventArgs e)
{
    // #1 创建列表（列车车次信息）
    List<Station> G103 = new List<Station>();

    // #2 添加节点（车站信息）
    G103.Add(stations[0]);
    G103.Add(stations[2]);
    G103.Add(stations[3]);
    G103.Add(stations[4]);
    G103.Add(stations[5]);

    // #3 输出车次信息
    StringBuilder sb = new StringBuilder();
    sb.AppendLine("1 去程（正向）<br>");
    foreach (Station s in G103)
    {
        sb.AppendLine(s.Id + " " + s.Name + "<br>");
    }
    sb.AppendLine("<br>");

    // #4 返程（列表的反向）
    G103.Reverse();
    List<Station> G104 = G103;

    sb.AppendLine("2 返程（反向）<br>");
    foreach (Station s in G103)
    {
        sb.AppendLine(s.Id + " " + s.Name + "<br>");
    }

    webBrowser1.DocumentText = sb.ToString();
}
 

2 代码格式

/// <summary>
/// 车站信息类 class
/// </summary>
public class Station
{
    /// <summary>
    /// 编号
    /// </summary>
    public int Id { get; set; } = 0;
    /// <summary>
    /// 车站名
    /// </summary>
    public string Name { get; set; } = string.Empty;

    public Station(int id, string name)
    {
        this.Id = id;
        this.Name = name;
    }
}

// 列表的初值
List<Station> stations = new List<Station>() {
    new Station(1,"北京"),
    new Station(2,"石家庄"),
    new Station(3,"香河"),
    new Station(4,"唐山"),
    new Station(5,"北戴河"),
    new Station(6,"秦皇岛"),
    new Station(7,"廊坊"),
    new Station(8,"天津"),
};

/// <summary>
/// 《小白学程序》第七课：列表（List）应用之二————编制高铁车次信息表
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button7_Click(object sender, EventArgs e)
{
    // #1 创建列表（列车车次信息）
    List<Station> G103 = new List<Station>();

    // #2 添加节点（车站信息）
    G103.Add(stations[0]);
    G103.Add(stations[2]);
    G103.Add(stations[3]);
    G103.Add(stations[4]);
    G103.Add(stations[5]);

    // #3 输出车次信息
    StringBuilder sb = new StringBuilder();
    sb.AppendLine("1 去程（正向）<br>");
    foreach (Station s in G103)
    {
        sb.AppendLine(s.Id + " " + s.Name + "<br>");
    }
    sb.AppendLine("<br>");

    // #4 返程（列表的反向）
    G103.Reverse();
    List<Station> G104 = G103;

    sb.AppendLine("2 返程（反向）<br>");
    foreach (Station s in G103)
    {
        sb.AppendLine(s.Id + " " + s.Name + "<br>");
    }


    webBrowser1.DocumentText = sb.ToString();
}

你非常幸运读到的是第一本真正的程序教程。