提一个超难的问题（至少我是一点思路都没有）

[QQQQXSH]

在运行时，怎么取得未知对象的属性字段等信息？（就像在编辑器中能列出成员列表一样）
可以取得的话，假设有如下情况：
已探知：对象A有public int a字段
那么怎么才能在程序中实现为这个未知对象赋值？

分数不上限（哦对了，倾家荡产为限），看回答情况另外开贴再加，
先谢各位了！

[QQQQXSH]

果然是，
以前瞄到过，
不过没起注意，
看来要认真才行！

[alexxzr]

学习！

[xiao_p]

getType（）
不可以吗？

[lovefootball]

利用反射，system.reflection
using System;
using System.Reflection;
public class LoadInvoke
{
public static void Main(string[] args)
{
Assembly a = Assembly.LoadFrom(args[0]);
Type[] mytypes = a.GetTypes();
BindingFlags flags = (BindingFlags.NonPublic | BindingFlags.Public |
BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly);

foreach(Type t in mytypes)
{
MethodInfo[] mi = t.GetMethods(flags);
Object obj = Activator.CreateInstance(t);

foreach(MethodInfo m in mi)
{
m.Invoke(obj, null);
}
}
}
}

具体的概念在网上查查 反射

[chenzhanyiczy]

利用反射,具体你可参考MSDN

[Richardhu]

得到可以参考System.Reflection，下面是部分调用方法，或给属性赋值得例子，你可以以次类推。
System.Reflection.Assembly myass = System.Reflection.Assembly.LoadFrom(strDllfilePath);
object o = myass.CreateInstance(strClassFullName);
//metheod
MethodBase method = o.GetType().GetMethod(strMesthodeName,
BindingFlags.Instance|BindingFlags.NonPublic|BindingFlags.Public);
object oResult = method.Invoke(o,paramerts);
//property
PropertyInfo property = o.GetType().GetProperty(strPropertyName,
BindingFlags.Instance|BindingFlags.NonPublic|BindingFlags.Public);
object oResult = property.GetValue(o,null);

[飞不动]

反射

[lovefootball]

这个是给属性附值

using System;
using System.Reflection;
using System.Globalization;

public class MyClass
{
private string myString;
public MyClass()
{
myString = "Old value";
}
string GetField
{
get
{
return myString;
}
}
}

public class FieldInfo_SetValue
{
public static void Main()
{
try
{
MyClass myObject = new MyClass();
Type myType = Type.GetType("MyClass");
FieldInfo myFieldInfo = myType.GetField("myString", BindingFlags.NonPublic | BindingFlags.Instance);
// Display the string before applying SetValue to the field.
Console.WriteLine( "\nThe field value of myString is {0}.", myFieldInfo.GetValue(myObject));
// Display the SetValue signature used to set the value of a field.
Console.WriteLine( "Applying SetValue(Object, Object).");
// Change the field value using the SetValue method.
myFieldInfo.SetValue(myObject, "New value");
// Display the string after applying SetValue to the field.
Console.WriteLine( "The field value of mystring is {0}.", myFieldInfo.GetValue(myObject));
// Set the field value to its old value.
myFieldInfo.SetValue( myObject , "Old value" );
myFieldInfo = myType.GetField("myString", BindingFlags.NonPublic | BindingFlags.Instance);
// Display the string before applying SetValue to the field.
Console.Write( "\nThe field value of mystring is {0}.\n", myFieldInfo.GetValue(myObject));
// Display the SetValue signature used to set the value of a field.
Console.WriteLine("Applying SetValue(Object, Object, BindingFlags, Binder, CultureInfo).");
// Change the field value using the SetValue method.
myFieldInfo.SetValue(myObject, "New value", BindingFlags.Public, null, null);
// Display the string after applying SetValue to the field.
Console.WriteLine( "The field value of mystring is {0}.", myFieldInfo.GetValue(myObject));
}
catch( Exception e )
{
// Any exception generated is displayed.
Console.WriteLine( "Exception: {0}", e.Message );
}
}
}

[epimetheus]

利用反射是最佳选择。请参考MSDN

[chenyun_424]

利用反射是最佳选择