任何人都可以解释为什么我在使用MathNet.com Numerics Library时会遇到TypeLoad Exception?

时间:2011-11-23 12:52:07

标签: c# exception mathdotnet

我得到一个奇怪的System.Action TypeLoadException,同时乘以两个矩阵,任何人都可以帮忙吗?

我在VS2008中创建了一个新项目,32位,并将目标框架更改为2.0,包括MathNet.Numerics.dll并执行以下代码:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Numerics;
using MathNet.Numerics.Statistics;
using MathNet.Numerics.LinearAlgebra;
using MathNet.Numerics.LinearAlgebra.Double;
using MathNet.Numerics.LinearAlgebra.Double.Factorization;

namespace MathNetTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double[,] A = new double[3, 3];

            A[0, 0] = 1;
            A[0, 1] = 0.2;
            A[0, 2] = 1;
            A[1, 0] = 1.5;
            A[1, 1] = -1.2;
            A[1, 2] = 1.1;
            A[2, 0] = 0.45;
            A[2, 1] = 2.1;
            A[2, 2] = -0.76;

            Matrix XA = new DenseMatrix(A);
            Matrix XB = new DenseMatrix(A);

            Matrix C = (Matrix)(XA * XB); // throws a TypeLoadException 
        }
    }
}

1 个答案:

答案 0 :(得分:2)

  

更新

     

MathNet.Numerics要求.NET Framework#4.0支持System.Numerics

我在Mono / MS.NET#4.0上没有这样的问题(见下面的例子)

这是从google code

下载的libs

如果我的回答对您没有帮助,请在GAC中检查MathNet的冲突版本,并优先设置参考文献t

  • 复制Local = true
  • Sepcific Version = true

Mono 2.10.x:

最小的tetst程序(控制台应用程序):

using MathNet.Numerics.LinearAlgebra.Double;

public class Program
{
    public static void Main(string[] args)
    {
        double[,] A = new double[3, 3];

        A[0, 0] = 1;
        A[0, 1] = 0.2;
        A[0, 2] = 1;
        A[1, 0] = 1.5;
        A[1, 1] = -1.2;
        A[1, 2] = 1.1;
        A[2, 0] = 0.45;
        A[2, 1] = 2.1;
        A[2, 2] = -0.76;

        Matrix XA = new DenseMatrix(A);
        Matrix XB = new DenseMatrix(A);

        Matrix C = (Matrix)(XA * XB); // throws a TypeLoadException 
    }
}

编译

dmcs -optimize+ -reference:MathNet.Numerics.dll test.cs

运行正常

Win64 MS.NET 4.0:

更新 VS2010(WinXP 64)也没问题:

T:\lib\Net40>csc test.cs -reference:MathNet.Numerics.dll
Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1
Copyright (C) Microsoft Corporation. All rights reserved.


T:\lib\Net40>.\test.exe