C # Reflection Instance explanation

1 Creating a DLL for reflection use

Create a new C # class library project, copy the source code below, compile the build DLL (if the DLL's filename is TestReflect.dll)

1using System;
2
3namespace Webtest
4{
5 /**//// <summary>
6 /// ReflectTest 的摘要说明。
7 /// </summary>
8 public class ReflectTest
9 {
10　public ReflectTest()
11　{}
12
13　public string WriteString(string s)
14　{
15　 return "欢迎您，" + s;
16　}
17
18　/**//// <summary>
19　/// dsajkjflasjdfalksdjfaskfd
20　/// </summary>
21　/// <param name="s"></param>
22　/// <returns></returns>
23　public static string WriteName(string s)
24　{
25　 return "欢迎您光临，" + s;
26　}
27
28　public string WriteNoPara()
29　{
30　 return "您使用的是无参数方法";
31　}
32 }
33}

2 Examples of applications applied to reflection

Add the following function to the ASPNET page:

1public void Test1 ()
2 {
3 System.Reflection.Assembly ass;
4 type type;
5 object obj;
6 Try
7 {
8 ass = System.Reflection.Assembly.LoadFile (@ "D:\TestReflect.dll");
9 type = ass. GetType ("Webtest.reflecttest");/must use the namespace + class name
Ten System.Reflection.MethodInfo method = type. GetMethod ("writestring");//Method name
One obj = ass. CreateInstance ("Webtest.reflecttest");/must use the namespace + class name
A string s = (string) method. Invoke (obj,new string[]{"Jianglijun"}); The invocation of the instance method

Response.Write (s+ "<br>"), and
method = type. GetMethod ("Writename");//method name
S = (string) methods. Invoke (null,new string[]{"Jianglijun"}); The call to the static method
Response.Write (s+ "<br>");

methods = type. GetMethod ("Writenopara");//No parameter instance method
S = (string) methods. Invoke (Obj,null);
Response.Write (s+ "<br>");
method = null;
23}
catch (Exception ex)
{
Response.Write (ex+ "<br>");
27}
finally
{
ass = null;
-type = null;
= obj = null;
:
}
/ p>