【IT168技术文档】
使用Visual Studio 2005创建一个类库，并且生成一个dll文件，如A.dll，文件名存放到数据库
在新建一个应用程序，后台代码里获取到这个文件名之后，有没有可以这样调用里面的方法和类。
首先新建一个类库,将它生成ClassLibrary1.dll
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using System;
using System.Collections.Generic;
using System.Text;
namespace WebTest
{
public class ReflectTest
{
private string word;
public String Word
{
get
{
return word;
}
set
{
word = value;
}
}
public ReflectTest(string w)
{
this.word = w;
}
public ReflectTest()
{
this.word = "word";
}
public string WriteString(String s)
{
return "Welcome + " + s;
}
public static string WriteStatic(String name)
{
return "Static : Welcome + " + name;
}
public string WriteNoPara()
{
return "NoPara : Welcome !";
}
private String WritePrivate()
{
return "Private ";
}
}
public class TestClass
{
}
}
然后新建立一个项目以入该dll(代码里有e文注释)
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using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
namespace TestReflect
{
class Program
{
static void Main(string[] args)
{
System.Reflection.Assembly ass;
Type type;
Object obj;
try
{
ass = Assembly.Load("ClassLibrary1");
Console.WriteLine("-----------All the class In this dll-----------");
foreach (Type t in ass.GetTypes())
{
Console.WriteLine(t.Name);
}
Console.WriteLine("---------All the Module In this dll----------");
Module[] miar = ass.GetModules();
foreach (Module m in miar)
{
Console.WriteLine(m.Name);
}
type = ass.GetType("WebTest.ReflectTest");
Console.WriteLine("-----------All the method In WebTest.ReflectTest-----------");
MethodInfo[] miarr = type.GetMethods();
foreach (MethodInfo m in miarr)
{
Console.WriteLine(m.Name);
}
Console.WriteLine("-----------All the Property In WebTest.ReflectTest-----------");
PropertyInfo[] piarr = type.GetProperties(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
foreach (PropertyInfo p in piarr)
{
Console.WriteLine(p.Name);
}
Console.WriteLine("----------Call some methods in WebTest.ReflectTest-----------");
obj = ass.CreateInstance("WebTest.ReflectTest");
MethodInfo method = type.GetMethod("WriteString");
String s = (String)method.Invoke(obj, new string[] { "WriteString" });
Console.WriteLine(s);
method = type.GetMethod("WriteStatic");
s = (String)method.Invoke(null, new string[] { "WriteName" });
Console.WriteLine(s);
method = type.GetMethod("WriteNoPara");
s = (String)method.Invoke(obj, null);
Console.WriteLine(s);
method = type.GetMethod("WritePrivate", BindingFlags.Instance | BindingFlags.NonPublic);
s = (String)method.Invoke(obj, null);
Console.WriteLine(s);
Console.WriteLine("---------Use the Property---------");
PropertyInfo pi = type.GetProperty("Word");
pi.SetValue(obj, "Word", null);
Console.WriteLine(pi.GetValue(obj,null));
Console.WriteLine("--------- Get All Constructor ----------");
ConstructorInfo[] ci = type.GetConstructors();
foreach (ConstructorInfo c in ci)
{
Console.WriteLine(c.ToString());
}
Console.WriteLine("-------- Construct --------");
ConstructorInfo ci1 = type.GetConstructor(new Type[] { typeof(string) });
WebTest.ReflectTest wr1 = (WebTest.ReflectTest)ci1.Invoke(new string[] { "XXX" });
Console.WriteLine(wr1.Word);
ConstructorInfo ci2 = type.GetConstructor(new Type[0] );
WebTest.ReflectTest wr2 = (WebTest.ReflectTest)ci2.Invoke(null);
Console.WriteLine(wr2.Word);
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
finally
{
ass = null;
type = null;
obj = null;
}
}
}
}
