C#可以减少或不使用switch有什么方法
Insus.NET的解决方法,是使用工厂方法来处理,可以创建一个工厂接口,然后每个方法设计为一个工厂类,并实现工厂接口。
工厂接口:
代码如下:
IGetFactory
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for IGetFactory
/// </summary>
namespace Insus.NET
{
public interface IGetFactory
{
string GetResult();
}
}
GetFactory
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for GetFactory
/// </summary>
namespace Insus.NET
{
public class GetFactory : IGetFactory
{
public GetFactory()
{
//
// TODO: Add constructor logic here
//
}
public string GetResult()
{
return "get";
}
}
}
GetTestFactory
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for GetTestFactory
/// </summary>
namespace Insus.NET
{
public class GetTestFactory : IGetFactory
{
public GetTestFactory()
{
//
// TODO: Add constructor logic here
//
}
public string GetResult()
{
return "gettest";
}
}
}
GetSetFactory
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for GetSetFactory
/// </summary>
namespace Insus.NET
{
public class GetSetFactory : IGetFactory
{
public GetSetFactory()
{
//
// TODO: Add constructor logic here
//
}
public string GetResult()
{
return "getset";
}
}
}
View Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Insus.NET;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public string Exec(string mothedName)
{
string ret = "";
//switch (mothedName)
//{
// case "get":
// ret = get();
// break;
// case "get1":
// ret = gettest();
// break;
// //.....
// case "testget":
// ret = getrset();
// break;
//}
IGetFactory get = new GetTestFactory(); //这里是实现工厂类
ret = get.GetResult();
return ret;
}
//public string get()
//{
// return "get";
//}
//public string gettest()
//{
// return "gettest";
//}
//public string getrset()
//{
// return "getset";
//}
}
15:50修改补充如下:
上面的最终代码,无传入参数mothedName,怎样办,我们可以虑一下反射,如果改为反射击,那传入的参数需要规范一下方可以:
"get" >>"Get";
"get1" >>"GetTest"
"testget" >> "GetSet"
这样一改之后,就可以使用反射语法了,可以把
代码如下:
IGetFactory get = new GetTestFactory(); //这里是实现工厂类
IGetFactory get = (IGetFactory)Assembly.Load("App_Code").CreateInstance("Insus.NET." + mothedName + "Factory");
如果在非asp.net下,可以把"App_Code"改为"程序集名称":
代码如下:
IGetFactory get = (IGetFactory)Assembly.Load("程序集名称").CreateInstance("Insus.NET." + mothedName + "Factory");