获取异常无法在DLL'D:\ Kailash \ Code \ MyDLLS.dll'中找到名为'Say'的入口点.

问题描述

我正在尝试导入dll.我的dll文件中有两个简单的功能.一个是Say，它接受一个字符串参数并获取字符串数据类型.另一个是Sum，它也获取字符串数据类型.
我使用dllimport类成功导入了dll文件，但问题是当我调用这两个函数时，我得到了异常无法在DLL''D:\ Kailash \ Code \ MyDLLS中找到名为"Say"的入口点.dll''.". dll的结构如下所示
命名空间:MyDLLs
课堂测试:
功能:说和总结
我正在按以下方式使用DLL.

I am trying to import dll. There are two simple function in my dll file. one is Say, which accept a string parameter and is fetching string datatype. other is Sum which also fetching string datatype.
I am getting success to import dll file using dllimport class, but problem is that when i call both function i am getting exception "Unable to find an entry point named ''Say'' in DLL ''D:\Kailash\Code\MyDLLS.dll''.". The structure of dll is given below
Namespace: MyDLLs
Class Test:
Function: Say and Sum
i am using the DLL as follow.

//Code of DLL
namespace MyDLLS
{
    public class Test
    {
        public Test()
        {
        }
        public string Say(string Name)
        {
            return "Hi " + Name + " How are you?";
        }
        public string Sum()
        {
            int x = 3;
            int y = 2;
            int xy = x * y;
            return xy.ToString();
        }
    }
}





//Code Where Using DLL 
   static class Program
    {
        [DllImport("D:\\Kailash\\Code\\MyDLLS.dll", EntryPoint = "Say", CharSet =          CharSet.Auto)]
        public static extern string Say(string Name);
        [DllImport("MyDLLS.dll", EntryPoint = "Sum", CharSet = CharSet.Auto)]
        public static extern string Sum();


        static void Main(string[] args)
        {
            string nm = Console.ReadLine().ToString();
            Console.WriteLine(Say(nm));

            Console.WriteLine(Sum());
            Console.ReadLine();

        }
    }
}

请帮帮我，
Kailash

Please help me,
Kailash

推荐答案

[DllImport("D:\\Kailash\\Code\\MyDLLS.dll", EntryPoint = "Say", CharSet =          CharSet.Auto)]
public static extern string Say(string Name);
[DllImport("MyDLLS.dll", EntryPoint = "Sum", CharSet = CharSet.Auto)]
public static extern string Sum();

并包含对您的引用，而不是Dll.然后，您可以直接通过MyDLLS.Say进行引用，也可以添加using语句.

顺便说一句:除非您将方法声明为static，否则您将需要提供类实例引用以始终访问方法.

And include a reference to you Dll instead. You can then either refer directly via MyDLLS.Say or by adding a using statement.

BTW: unless you declare the method as static you will need to provide a class instance reference to access the methods anyway.

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