同时序列化两个字典

Question

我有两个类如下，我在两个单独的Dictionaries 中使用它们。我怎样才能Serialize这两个字典到一个文件？我的单个字典的序列化实现可以在这个链接中找到： Serialize a Dictionary<string, object>

[Serializable]
class Beam
{
    public string Name { get; set; }
    public double Width { get; set; }
}

[Serializable]
class Column
{
    public string Name { get; set; }
    public double Width { get; set; }
}

这是我的字典：

var Dic1 = new Dictionary<string, Beam>
{
    {"Beam1", new Beam{Name = "B1", Width = 10}},
    {"Beam2", new Beam{Name = "B2", Width = 5}},
};

var Dic2 = new Dictionary<string, Column>
{
    {"Column1", new Column{Name = "C1", Width = 10}},
    {"Column2", new Column{Name = "C2", Width = 5}},
};

这是我迄今为止编写的完整代码，但出现异常：

[Serializable]
public static class Building
{
    public static Dictionary<string, Beam> Beams;
    public static Dictionary<string, Column> Columns;
}

[Serializable]
public class Beam
{
    public string Name { get; set; }
}

[Serializable]
public class Column
{
    public string Name { get; set; }
}

static class Program
{
    static void Main()
    {

        Building.Beams.Add("Beam1", new Beam { Name = "B1"});
        Building.Columns.Add("Column1", new Column { Name = "C1" });

        Serialize();
    }

    static void Serialize()
    {

        var fs = new FileStream("DataFile.dat", FileMode.Create);

        var formatter = new BinaryFormatter();
        try
        {
            // I'm getting an excepting here:
            // 'Savef.Building' is a 'type' but is used like a 'variable'
            formatter.Serialize(fs, Building);
        }
        catch (SerializationException e)
        {
            Console.WriteLine("Failed to serialize. Reason: " + e.Message);
            throw;
        }
        finally
        {
            fs.Close();
        }
    }
}

Answer 1

创建一个标有Serializable 属性的类，包含这两个字典的实例：

[Serializable]
public class Building
{
    public static Building Instance = new Building();

    public readonly Dictionary<string, Beam> Beams = new Dictionary<string, Beam>();
    public readonly Dictionary<string, Column> Columns = new Dictionary<string, Column>();

    public static Dictionary<string, Beam> AllBeams
    {
        get { return Instance.Beams; }
    }
}

编辑
用于避免异常的Singleton 模式。
在代码的其他部分使用 Building.Instance 访问字典。
EDIT2
介绍了static 属性：Building.AllBeams。您可以将其用作简写。