C#调用考勤机API读取记录

C#调用考勤机API读取记录,对没过串口编程的朋友有帮助

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 app3
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            const long JS_OK=1;
            const long INVALID_HANDLE_VALUE=-1;
            const long JS_COMM_ERR=-3;
            const long JS_NO_HEX_STR=-6;
            const long JS_STRLEN_ERR=-7;
            const long JS_TYPE_ERR=-10;
            const long JS_OP_ERR=-11;

 
            IntPtr hc;

            long si;


            si = wsh.ClearAlarm（button1.Handle 139）;
            第一个参数据是端口句柄，你要装上考勤机，才能获取到
            第二个参数同上，也要装上考勤机，才能获取到

            switch （si）
            {
                case JS_OK:
                    MessageBox.Show（“JS_OK成功“）;
                    break;
                case INVALID_HANDLE_VALUE:
                    MessageBox.Show（“INVALID_HANDLE_VALUE非法句柄“）;
                    break;
                case JS_COMM_ERR:
                    MessageBox.Show（“JS_COMM_ERR通讯错误“）;
                    break;
                case JS_NO_HEX_STR:
                    MessageBox.Show（“JS_NO_HEX_STR输入参数不是十六进制的字符串“）;
                    break;
                case JS_STRLEN_ERR:
                    MessageBox.Show（“JS_STRLEN_ERR输入字符串参数长度不匹配“）;
                    break;
                case JS_TYPE_ERR:
                    MessageBox.Show（“JS_TYPE_ERR设备不支持的类型“）;
                    break;
                case JS_OP_ERR:
                    MessageBox.Show（“JS_OP_ERR设备操作错误“）;
                    break;
               default:
                    MessageBox.Show（“调用失败“）;
                    break;

            }
        }
    }

    public class wsh
    {
        [DllImport（“a08.dll“ CharSet = CharSet.Ansi CallingConvention = CallingConvention.StdCall）]
        public extern static long ClearAlarm（IntPtr hCom byte DevNo）;

    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       3215  2009-07-10 13:29  app3\app3\app3.csproj

     文件     163840  2005-06-21 16:05  app3\app3\bin\Debug\a08.dll

     文件      20480  2009-07-10 13:29  app3\app3\bin\Debug\app3.exe

     文件      22016  2009-07-10 13:29  app3\app3\bin\Debug\app3.pdb

     文件       5632  2005-11-11 22:25  app3\app3\bin\Debug\app3.vshost.exe

     文件       2277  2009-07-10 13:36  app3\app3\Form1.cs

     文件       2043  2009-07-10 12:17  app3\app3\Form1.Designer.cs

     文件       5814  2009-07-10 12:17  app3\app3\Form1.resx

     文件        247  2009-07-10 13:29  app3\app3\obj\app3.csproj.FileList.txt

     文件        842  2009-07-10 12:19  app3\app3\obj\Debug\app3.csproj.GenerateResource.Cache

     文件      20480  2009-07-10 13:29  app3\app3\obj\Debug\app3.exe

     文件        180  2009-07-10 12:19  app3\app3\obj\Debug\app3.Form1.resources

     文件      22016  2009-07-10 13:29  app3\app3\obj\Debug\app3.pdb

     文件        180  2009-07-10 11:53  app3\app3\obj\Debug\app3.Properties.Resources.resources

     文件        469  2009-07-10 12:20  app3\app3\Program.cs

     文件       1162  2009-07-10 11:53  app3\app3\Properties\AssemblyInfo.cs

     文件       2862  2009-07-10 11:53  app3\app3\Properties\Resources.Designer.cs

     文件       5612  2009-07-10 11:53  app3\app3\Properties\Resources.resx

     文件       1087  2009-07-10 11:53  app3\app3\Properties\Settings.Designer.cs

     文件        249  2009-07-10 11:53  app3\app3\Properties\Settings.settings

     文件        901  2009-07-10 11:53  app3\app3.sln

    ..A..H.     17408  2009-07-10 13:36  app3\app3.suo

     目录          0  2009-07-10 11:53  app3\app3\obj\Debug\TempPE

     目录          0  2009-07-10 13:36  app3\app3\bin\Debug

     目录          0  2009-07-10 13:29  app3\app3\obj\Debug

     目录          0  2009-07-10 13:29  app3\app3\bin

     目录          0  2009-07-10 11:53  app3\app3\obj

     目录          0  2009-07-10 11:53  app3\app3\Properties

     目录          0  2009-07-10 13:36  app3\app3

     目录          0  2009-07-10 11:53  app3

............此处省略3个文件信息