NET Core中调用从C ++项目构建的.dll时出现BadImageFormatException [英] BadImageFormatException When Calling .dll Built from C++ Project In NET Core

问题描述

我有两个预先存在的项目（C ++，C＃NET 4.5.2），其中C＃项目调用了C ++项目。在我将NET 4.5.2项目移植到NET Core之前，这一直很好。现在，当我尝试访问从C ++项目构建的程序集时，出现BadImageFormatException。可以从NET Core程序集中调用该程序集吗？

I have two preexisting projects (C++, C# NET 4.5.2) where the C# projects calls into the C++ project. This worked perfectly until I ported the NET 4.5.2 project to NET Core. Now I get a BadImageFormatException when trying to access the assembly built from the C++ project. Is it possible to call this assembly from a NET Core assembly?

public static string CallCPlusPlusConvert(string inputFileName)
{
    if (inputFileName == null) { throw new ArgumentNullException(nameof(inputFileName)); };

    return SafeNativeMethods.Convert(inputFileName);
}

internal class SafeNativeMethods
{
    [return: MarshalAs(UnmanagedType.BStr)]
    [DllImport("CPlusPlusProject", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Unicode)]
    internal static extern string Convert([MarshalAs(UnmanagedType.BStr)][In]string filePath);
}

推荐答案

请参见此处 https://msdn.microsoft.com/en-us/library/k7137bfe.aspx

检查dll是否不是专门针对您所运行的体系结构而设计的。检查您编译C ++ dll的格式为

Check that the dll isn't specifically for an architecture other than what you're running as. Check what you complied the C++ dll as

即不要在32位应用程序中使用64位dll，反之亦然

i.e. Don't use a 64-bit dll in a 32-bit application and vice versa

编辑：我还看到您将此标签为ASP.NET。如果您正在IIS中运行此程序并遇到此问题，则可以尝试更改分配给项目的应用程序池的高级设置中的启用32位应用程序选项

I also see that you tagged this as ASP.NET. If you're running this in IIS and get this issue then you can try to change the Enable 32-bit Applications option in the Advanced settings for the app pool assigned to the project

这篇关于NET Core中调用从C ++项目构建的.dll时出现BadImageFormatException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！