从C＃调用C函数 [英] calling c function from C#

问题描述

作为一个简单的例子，我有一个C函数接收一个int，增加并返回递增value.on我进入输入号码文本框对方在C＃。 我怎么能调用C函数来处理的数量，并从C＃回来回来吗？在此先感谢

as a simple example, i have a C function which receives an int,increment it and return incremented value.on the other side I enter the input number to textbox in C#. how can i call C function to process the number and return it back from c#?Thanks in advance

推荐答案

您正在寻找的 P /调用。

您做将需要引用了System.Runtime.InteropServices 键，然后执行以下操作，如果你的C DLL包含一个名为 increase_int <功能/ code>：

You do will need a Reference to System.Runtime.InteropServices and then do the following, if your C DLL contains a function called increase_int:

[DllImport("mylib.dll")]
private static extern int increase_int(int in_value);

和使用它从你的code做

and use it from your code doing

int newValue = increase_int(oldValue);

编辑： 该链接指向的实现，因为我已经看到刚才在.NET Compact Framework。该描述也适用于.NET框架。下面是<打击>的MSDN杂志更详细的介绍：的http：// MSDN .microsoft.com / EN-US /杂志/ cc164123.aspx MSDN在线：的 https://msdn.microsoft.com/en-us/library/aa288468（V = vs.71）的.aspx

The link points to the implementation for the .Net compact framework as I have seen just now. The description also works for the .Net framework. Here is a more detailed intro from the MSDN magazine: http://msdn.microsoft.com/en-us/magazine/cc164123.aspx MSDN online: https://msdn.microsoft.com/en-us/library/aa288468(v=vs.71).aspx

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