How to dynamically load DLLs in C #

1, new test DLL and method, with vs2010 new WinForm program, the specific code is as follows:

Using System;  
Using System.Collections.Generic;  
Using System.ComponentModel;  
Using System.Data;  
Using System.Drawing;  
Using System.Linq;  
Using System.Text;  
Using System.Windows.Forms;  
     
namespace reflect  
{public  
    partial class Form1:form  
    {public  
        Form1 ()  
            { InitializeComponent ();  
        }  
        public string Testreflect ()  
        {  
            MessageBox.Show ("Dynamically loading DLL Test");  
            Return "Testreflect returned value";}}  

2. Dynamic Loading code

Using System;  
Using System.Collections.Generic;  
Using System.ComponentModel;  
Using System.Data;  
Using System.Drawing;  
Using System.Linq;  
Using System.Text;  
Using System.Windows.Forms;  
     
Using System.Reflection;  
            namespace Reflecttest {public partial class Form1:form {public Form1 () {  
        InitializeComponent (); } private void Button1_Click (object sender, EventArgs e) {//Load DLL functions//a ssembly asm = assembly.load (Strdllpath)//dll Assembly ASM = assembly.loadfile (@ "F:\WorkSpace\VS test code for the current root directory)  
            \ Reflection Test 001\ Reflection Message Method \reflect\reflect\bin\debug\reflect.dll ")//the type's namespace and class are loaded//using the actual path of the DLL file to get the types System.Type fromclass = asm. GetType ("reflect.")  
            Form1 ");  
            You need to instantiate the type before you can use it, the parameters can be artificially specified, or no parameters can be used, and static instances can omit Object obj = System.Activator.CreateInstance (fromclass); Get a method by method name (debugging goes to the next step, you can eject the "Dynamic load DLL test" message.MethodInfo method = Fromclass.getmethod ("Testreflect"); Gets the return value of the Testreflect function, where the "Testreflect return value" is obtained, and if there is no return value, this step object o = Method can be omitted.  
        Invoke (obj, new object[] {}); }  
    }  
}

Note

Methods in the method name to obtain the method must be public!

This paper url:http://www.bianceng.cn/programming/csharp/201410/45595.htm