动态bean实例化（反射???） [英] Dynamic bean instantiation (reflection???)
问题描述
我试图根据字符串
类名动态创建对象实例，然后我需要动态设置这些值的值
对象，但我不知道如何在C＃中执行此操作。以下是我需要做的例子
：
****** Dog.cs ******
命名空间MySystem
{
公共类狗
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** Cat.cs * *****
命名空间MySystem
{
公共类Cat
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** SetAnimals.cs * *****
命名空间MySystem
{
公共类SetAnimals
{
string [，] animals = new string [，] {{" Dog"，" dogname1"}，
{" Dog"，" dogname2"}，{" Cat" ;，catname1}};
公共IList setAnimals（）
{
IList animalList = new ArrayList（） ;
//以某种方式动态创建一个对象的新实例，并且
将它添加到animalList
//例如animals [0,0]是一种Dog类型，因此动态地创建一个Dog类，并为刚从动物身上创建的Dog类设置名称
// [ 0,1]
" dogname1"
返回animalList;
}
} < br $>
}
我想在C＃中做些什么？有没有人有任何想法
如何做到这一点？
谢谢，
Jerry
Hi,
I am trying to dynamically create object instances based on a string
class name, and then I need to dynamically set values to these
objects, but I have no idea how to do this in C#. Here is the example
of what I need to do:
******Dog.cs******
namespace MySystem
{
public class Dog
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******Cat.cs******
namespace MySystem
{
public class Cat
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******SetAnimals.cs******
namespace MySystem
{
public class SetAnimals
{
string[,] animals = new string[,] {{"Dog","dogname1"},
{"Dog","dogname2"},{"Cat","catname1"}};
public IList setAnimals()
{
IList animalList = new ArrayList();
// Somehow dynamically create a new instance of an object and
add it to the animalList
// e.g. animals[0,0] is a Dog type, therefore dynamically
create a Dog class, and set the name
// for the just created Dog class taken from animals[0,1]
"dogname1"
return animalList;
}
}
}
Is what I''m trying to do possible in C#? Does anyone have any ideas
how this can be done?
Thanks,
Jerry
推荐答案
我认为可以从COM源找到解决问题的最佳方案。
创建一个可以产生对象。
类的一个方法是类的类型名称字符串，
，方法内部包含if-else-if-else ... whick返回
对应的对象。
喜欢这个：
Class Spawn
{
public System.Object getInstance（string typeName）
{
if（typeName ==" Dog"）
返回新的狗（）;
否则如果/ *等等* /
}
}
jerryau写道：
I think the best solution for your problem can be found from the COM source.
Create a class which can spawn objects.
One method of the class take the type namestring for the class,
and inside the method contains an if-else-if-else... whick returns the
corresponding object.
Like this:
Class Spawn
{
public System.Object getInstance(string typeName)
{
if(typeName == "Dog")
return new Dog();
else if /* and so on */
}
}
jerryau wrote:
我试图根据字符串动态创建对象实例
类名，然后我需要动态设置值这些
对象，但我不知道如何在C＃中执行此操作。以下是我需要做的例子
：
****** Dog.cs ******
命名空间MySystem
{
公共类狗
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** Cat.cs * *****
命名空间MySystem
{
公共类Cat
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** SetAnimals.cs * *****
命名空间MySystem
{
公共类SetAnimals
{
string [，] animals = new string [，] {{" Dog"，" dogname1"}，
{" Dog"，" dogname2"}，{" Cat" ;，catname1}};
公共IList setAnimals（）
{
IList animalList = new ArrayList（） ;
//以某种方式动态创建一个对象的新实例，并且
将它添加到animalList
//例如animals [0,0]是一种Dog类型，因此动态地创建一个Dog类，并为刚从动物身上创建的Dog类设置名称
// [ 0,1]
" dogname1"
返回animalList;
}
} < br $>
}
我想在C＃中做些什么？有没有人有任何想法
如何做到这一点？
谢谢，
Jerry
Hi,
I am trying to dynamically create object instances based on a string
class name, and then I need to dynamically set values to these
objects, but I have no idea how to do this in C#. Here is the example
of what I need to do:
******Dog.cs******
namespace MySystem
{
public class Dog
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******Cat.cs******
namespace MySystem
{
public class Cat
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******SetAnimals.cs******
namespace MySystem
{
public class SetAnimals
{
string[,] animals = new string[,] {{"Dog","dogname1"},
{"Dog","dogname2"},{"Cat","catname1"}};
public IList setAnimals()
{
IList animalList = new ArrayList();
// Somehow dynamically create a new instance of an object and
add it to the animalList
// e.g. animals[0,0] is a Dog type, therefore dynamically
create a Dog class, and set the name
// for the just created Dog class taken from animals[0,1]
"dogname1"
return animalList;
}
}
}
Is what I''m trying to do possible in C#? Does anyone have any ideas
how this can be done?
Thanks,
Jerry
或者你可以切换一个类的HashCode。
那可能会更快。:)
jerryau写道：
Or you can switch a class''s HashCode.
That may be faster.:)
jerryau wrote:
我试图根据字符串动态创建对象实例
类名，然后我需要动态设置这些
对象的值，但我不知道如何在C＃中执行此操作。以下是我需要做的例子
：
****** Dog.cs ******
命名空间MySystem
{
公共类狗
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** Cat.cs * *****
命名空间MySystem
{
公共类Cat
{
私人字符串名称;
公共字符串名称
{
get {return name; }
set {name = value; }
}
}
}
****** SetAnimals.cs * *****
命名空间MySystem
{
公共类SetAnimals
{
string [，] animals = new string [，] {{" Dog"，" dogname1"}，
{" Dog"，" dogname2"}，{" Cat" ;，catname1}};
公共IList setAnimals（）
{
IList animalList = new ArrayList（） ;
//以某种方式动态创建一个对象的新实例，并且
将它添加到animalList
//例如animals [0,0]是一种Dog类型，因此动态地创建一个Dog类，并为刚从动物身上创建的Dog类设置名称
// [ 0,1]
" dogname1"
返回animalList;
}
} < br $>
}
我想在C＃中做些什么？有没有人有任何想法
如何做到这一点？
谢谢，
Jerry
Hi,
I am trying to dynamically create object instances based on a string
class name, and then I need to dynamically set values to these
objects, but I have no idea how to do this in C#. Here is the example
of what I need to do:
******Dog.cs******
namespace MySystem
{
public class Dog
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******Cat.cs******
namespace MySystem
{
public class Cat
{
private string name;
public string name
{
get { return name; }
set { name = value; }
}
}
}
******SetAnimals.cs******
namespace MySystem
{
public class SetAnimals
{
string[,] animals = new string[,] {{"Dog","dogname1"},
{"Dog","dogname2"},{"Cat","catname1"}};
public IList setAnimals()
{
IList animalList = new ArrayList();
// Somehow dynamically create a new instance of an object and
add it to the animalList
// e.g. animals[0,0] is a Dog type, therefore dynamically
create a Dog class, and set the name
// for the just created Dog class taken from animals[0,1]
"dogname1"
return animalList;
}
}
}
Is what I''m trying to do possible in C#? Does anyone have any ideas
how this can be done?
Thanks,
Jerry
4月24日下午1:15，jerryau< jerrya ... @ gmail.comwrote：
On Apr 24, 1:15 pm, jerryau <jerrya...@gmail.comwrote:
我是试图动态创建基于字符串
类名的对象实例，然后我需要动态设置这些
对象的值，但我不知道如何做到这一点在C＃中。以下是我需要做的示例
：
I am trying to dynamically create object instances based on a string
class name, and then I need to dynamically set values to these
objects, but I have no idea how to do this in C#. Here is the example
of what I need to do:
< snip>
<snip>
我正在尝试用C＃做什么？有没有人有任何想法
如何做到这一点？
Is what I''m trying to do possible in C#? Does anyone have any ideas
how this can be done?
听起来像是在Spring.NET之后：
http://springframework.net
Jon
Sounds like you''re after Spring.NET:
http://springframework.net
Jon
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