如何DllImport 一个DLL?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace DLL
{
public class UserPowerDll
{
[DllImport( "CDSkey.dll ", CharSet = CharSet.Auto)]
public static extern bool GetSysPower; //报错修饰“extern”对该项无效?为什么会报这个错误呀。
}
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (UserPowerDll.GetSysPower)
{ MessageBox( "Yes "); }
else { MessageBox( "No "); }
}
}
}
如上代码:extern 报错。
------解决方案--------------------参数也要出来吧
------解决方案--------------------[DllImport( "CDSkey.dll ", CharSet = CharSet.Auto)]
public static extern bool GetSysPower();