将model注册进单例中，每次用的时候从单例里面取

控制台程序示例：

单例的设计：

class Manager
{
private static Manager _instance = null;

public static Manager CreateInstance()
{
if (_instance == null)
{
_instance = new Manager();
}
return _instance;
}

private Manager()
{

}

Dictionary<string, BaseModel> dic = new Dictionary<string, BaseModel>();

public void ResisterModel(string modelName,BaseModel bm)
{
if (!dic.ContainsKey(modelName))
{
dic.Add(modelName,bm);
}
}

public BaseModel GetModel(string modelName)
{
if(dic.ContainsKey(modelName))
{
return dic[modelName];
}
return null;
}

public void RemoveModel(string modelName)
{
if(dic.ContainsKey(modelName))
{
dic.Remove(modelName);
}
}
}
}

调用地方的设计：

class Program
{
static void Main(string[] args)
{
Manager mm = Manager.CreateInstance();
mm.ResisterModel(model1.name,new model1());
mm.ResisterModel(model2.name,new model2());

model1 m1 = mm.GetModel(model1.name) as model1;
model2 m2 = mm.GetModel(model2.name) as model2;

Console.WriteLine(m1.GetName());
Console.WriteLine(m2.GetName());

Console.ReadKey();
}
}

此外，例子中使用的model和basemodel,

class BaseModel
{
public string name = string.Empty;
}

class model1:BaseModel
{
public static new string name = "model1";

public string GetName()
{
int a = 11;
return a.ToString();
}
}

class model2:BaseModel
{
public static new string name = "22";

public string GetName()
{
return name;
}
}