對於VS2008等低版本與高版本VS之間的轉換問題：
對照下面2個版本的不同點自由修改，切換到相應的版本文件(紅字修改,灰色刪除)
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低版本VS2008:
修改[解決方案文件.sln] 用記事本打開,找到如下信息:
Microsoft Visual Studio Solution File, Format Version 10.00
# Visual Studio 2008
修改工程名.csproj:
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>9.0.21022</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{B1B8919C-53FA-4791-8123-2734B1F723D1}</ProjectGuid>
<TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
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高版本VS2013:
修改[解決方案文件.sln] 用記事本打開,找到如下信息:
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.31101.0
MinimumVisualStudioVersion = 10.0.40219.1
修改工程名.csproj:
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{6022CDCE-C809-4D35-A355-72EDDE889F9F}</ProjectGuid>
<AppDesignerFolder>Properties</AppDesignerFolder>
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
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如果修改.net framework版本,請注意相應的修改引用的dll的目標版本號<RequiredTargetFramework>3.5</RequiredTargetFramework>
或者打開解決方案后，檢查工程下的引用是否正常，不正常移除后重新引用一下
vs2008轉成vs2013已經試過了沒問題(解決方案,工程名都能正常打開編譯運行)