在 C# 代码中导入 DLL 函数
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Importing DLL functions in c# code
提问by Amit Agrawal
I have a DLL, whose functions i want to use in my c# code Here are the functions of that DLL :
我有一个 DLL，我想在我的 c# 代码中使用它的函数 以下是该 DLL 的函数：
extern "C"
{
__declspec(dllimport)
const char* __stdcall ZAJsonRequestA(const char *szReq);
__declspec(dllimport)
const wchar_t* __stdcall ZAJsonRequestW(const wchar_t *szReq);
__declspec(dllimport)
const BSTR __stdcall ZAJsonRequestBSTR(BSTR sReq);
}
Can anyone tell me how to use it in c# project, as this dll seems to be in other language ?
谁能告诉我如何在 c# 项目中使用它，因为这个 dll 似乎是其他语言的？
回答by Patrick D'Souza
Please have a look at the following articleon Code Project for an in depth explanation
请查看以下关于 Code Project 的文章以获得更深入的解释
A small sample from the linked article is as shown below
链接文章中的一个小样本如下所示
To call a function, say methodName
要调用函数，请说methodName
int __declspec(dllexport) methodName(int b)
{
return b;
}
Include the class library (MethodNameLibrary.dll) containing the above method as shown below in c#
在 c# 中包含包含上述方法的类库 (MethodNameLibrary.dll)，如下所示
class Program
{
[DllImport(@"c:\MethodNameLibrary.dll")]
private static extern int methodName(int b);
static void Main(string[] args)
{
Console.WriteLine(methodName(3));
}
}
