Pb调用 c#编写的DLL.docVIP

Pb调用 c#编写的DLL C#以其简单易用,功能强大深受大家喜爱.PowerBuilder作为C/S的MIS开发工具,十分简单灵活,开发时间短,开发及维护成本低,一直是中小企业信息管理系统的首选开发工具.但是PB的局限性限制了它进一步的发展,这个就不多说了,玩PB的朋友都清楚.PB如何调用C#写的DLL,这个兴趣一上来,就忍不住要解决它.经过多方查找资料加上自己写代码测试,算是解决这个难题.下面列出开发步骤及各种设置选项(开发工具VS2008SP1+PB9.0-8836) ???? 首先我们打开VS2008,新建一个项目,如图 接着我们双击解决方案下面的属性文件夹[Properties],系统将打开类型的属性设置窗口,选择[应用程序] 点击程序集信息按钮,弹出信息窗口,选中[使程序集COM可见],如图 接下来选择[生成]标签 ,选中[为COM互操作注册] 选择[签名]标签,选中[为程序集签名]--[选择强名称密钥文件]--[新建],输入你的密钥名称,去掉[使用密码保护密钥文件],如图 OK,到这里配置完成,下面给出代码 using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web;using System.Security.Cryptography;using System.IO;using System.Web.SessionState;using System.Runtime.InteropServices; namespace encry{??? [Guid(FF6B4D57-F34E-49ec-9A3B-D0A17B59F78A)]??? public interface IEncryption??? {??????? [DispId(1)]??????? string EncryptString(string encryptString, string encryptKey);??????? [DispId(2)]??????? string DecryptString(string decryptString, string decryptKey);??????? [DispId(3)]??????? string md5(string str, int code);??? } ??? [Guid(531D2D13-11DE-41a8-A788-CB51B5642CCE), ClassInterface(ClassInterfaceType.None), ComSourceInterfaces(typeof(IEncryption))]??? public class encryption : IEncryption??? {??????? #region 3des加密字符串??????? /// summary??????? /// DES加密字符串??????? /// /summary??????? /// param name=encryptString待加密的字符串/param??????? /// param name=encryptKey加密密钥,要求为8位/param??????? /// returns加密成功返回加密后的字符串，失败返回源串/returns??????? public string EncryptString(string encryptString, string encryptKey)??????? {??????????? try??????????? {??????????????? byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));??????????????? byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };??????????????? byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);??????????????? DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();??????????????? MemoryStream mStream = new MemoryStream();??????????????? CryptoStream cSt