In the Visual Studio project, a 32-or 64-bit DLL is automatically referenced based on the system platform.

I recently used noesis. Javascript. dll, but this DLL is available in x86 and x64 versions. My own computer is 64-bit, but others' computers are 32-bit. So there is a problem when using it in other people.

How to reference two versions of DLL in. Search for documents online. The code I modified is as follows: (you can check the information later)

    <Reference Condition=" '$(Platform)' == 'AnyCPU' " Include="Noesis.Javascript, Version=0.0.0.0, Culture=neutral, PublicKeyToken=ae36d046c7f89f85, processorArchitecture=AMD64">      <SpecificVersion>False</SpecificVersion>      <HintPath>lib\x86\Noesis.Javascript.dll</HintPath>    </Reference>    <Reference Condition=" '$(Platform)' == 'x86' " Include="Noesis.Javascript, Version=0.0.0.0, Culture=neutral, PublicKeyToken=ae36d046c7f89f85, processorArchitecture=AMD64">      <SpecificVersion>False</SpecificVersion>      <HintPath>lib\x86\Noesis.Javascript.dll</HintPath>    </Reference>    <Reference Condition=" '$(Platform)' == 'x64' " Include="Noesis.Javascript, Version=0.0.0.0, Culture=neutral, PublicKeyToken=ae36d046c7f89f85, processorArchitecture=AMD64">      <SpecificVersion>False</SpecificVersion>      <HintPath>lib\x64\Noesis.Javascript.dll</HintPath>    </Reference>

Recently, the system was changed from win2008 (32-bit) to win2008r2, and an exception occurred when using the program originally developed in a 32-bit system in a 64-bit system. After debugging, it turns out that the 32-bit DLL of "system. Data. SQLite" is referenced in it, so that the program cannot run in 64-Bit mode (but can be compiled through) powered by 25175.net

Solution:

1. download the latest x64 DLL from the http://sourceforge.net/projects/sqlite-dotnet2/files/. After compilation, it can run normally on a 64-bit system, but it cannot run on a 32-bit system at the same time.


2. Find Solutions to automatically adapt projects to different platforms.

Solution:



Modify the csproj (C # project file extension) file configuration to adapt to the corresponding platform, where $ {platform} represents the corresponding Platform

Method 1. Use $ {platform} In hintpath as the variable replacement path

Assume that your dll has two platforms to build and they are located in the following locations:

C:\whatever\x86\whatever.dll  
C:\whatever\x64\whatever.dll  
 

You only need to edit the. csproj file for this Protocol:

<HintPath>C:\whatever\x86\whatever.dll</HintPath>  
 

Is:

<HintPath>C:\whatever\${Platform}\whatever.dll</HintPath>  
 

Then, you should be able to build your project for these two platforms, and msbuild will seek other platforms of choice, for the correct directory.



Method 2: add the condition to the reference node.

A. Add the condition to the 32-bit reference node.

<Reference Condition=" '$(Platform)' == 'AnyCPU' "……

B. Copy the 32-bit platform reference node and change it to the 64-bit platform. Replace the dll path in the hintpath node with the corresponding 64-bit version.

<Reference Condition=" '$(Platform)' == 'x64' ……

Method 3: The itemgroup node adds the condition. Its implementation is the same as method 2, but the nodes used are different. This is skipped.