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标题: C#调用c的dll，求大神指导 [打印本页]

作者: jyf2675 时间: 2016-11-25 23:31
标题: C#调用c的dll，求大神指导

代码如下：但总是提示：方法类型签名与PIvoke不兼容
这里返回值mydb是一个结构体，输入参数为数组指针：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;//引入dll文件的函数

namespace dll文件链接
{
class Program
{

      [DllImport("EMatrix.dll", EntryPoint = "EnergySolver", CallingConvention = CallingConvention.Cdecl)]
      private static extern mydb EnergySolver(IntPtr  ZUCHNEG);//引入dll中写好的函数
   [StructLayout(LayoutKind.Sequential, Pack = 1)]
      public struct mydb
{
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 100)]
            public double[] x;//Y坐标的值，单位U(mm/s)，该数组从1开始计数
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public double [] y;//X坐标的值，单位P(MPa)，该数组从1开始计数
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20*4)]
         public double[]a;//X坐标的值，单位P(MPa)，该数组从1开始计数
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 100)]
         public double[] b;//X坐标的值，单位P(MPa)，该数组从1开始计数
}
      static void Main(string[] args)
      {
         double[] m_PeiFang1 = new double[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
         m_PeiFang1[0] = 13.731882598335664;
         m_PeiFang1[1] = 89.175685804764413;
         m_PeiFang1[2] = 13.731882598335664;
         m_PeiFang1[3] = 2.2614300711402282;
         m_PeiFang1[4] = -3438.4000000000001;
         m_PeiFang1[5] = 450.00000000000000;
         IntPtr ptr = Marshal.AllocHGlobal(m_PeiFang1.Length * Marshal.SizeOf(typeof(double)));//分配内存
         mydb a = EnergySolver( ptr);
         Console.ReadKey();
      }
}
}

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