调用C DLL从ASP.NET Web服务 [英] Calling C DLL From ASP.NET Web Service

问题描述

这是该项目的总工作流程

Hi this is the total workflow of this project

我们是COBOL编写一个应用程序，凌晨可以使用该应用程序通信仅 C DLL ，这对我们在<$ C调用该方法$ C> DLL 下面

we have a application which is written in cobol, wee can communicate to that application using only a C DLL, the method which we have to call in the dll is given below

[DllImport(@"C:\CCExpert\haz450cp.dll", EntryPoint = "HAZ450CP", CallingConvention = CallingConvention.Cdecl)]
    unsafe public static extern void HAZ450CP(ref p45_control p45_controlx, out p45_clreturn p45_clreturnx, ref p45_clclaim p45_clclaimx);

我们所做的事情是，我们调用了 C DLL 从 C＃DLL ，这个 C＃DLL 工作的罚款与控制台应用程序，这意味着我们可以给输入到它，我们都可以从控制台应用程序适当的输出也。

what we did is we are invoking that C dll from a C# DLL, this C# dll working fine with console application, it means we can give the input to it and we are getting proper output also from console application.

但是，当我尝试调用同一个 C＃DLL 从 ASP.NET的WebService 它给错误

But when i try to call the same C#DLL from the ASP.NET WebService its giving error

感谢

推荐答案

我知道这听起​​来有点傻，但可以将asp.net用户从哪里DLL所在的目录中读取内容？

I know this might sound a little stupid, but can your asp.net user read contents from the directory where the DLL is located?

您可以通过复制你的DLL Web应用程序文件夹的bin目录并从C改变DLL的路径做这个测试：\\ CCExpert \\ haz450cp.DLL只是haz450cp.DLL

You can do this test by copying you DLL to the bin directory of your web application folder and changing the DLL path from C:\CCExpert\haz450cp.DLL to just haz450cp.DLL

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