Modify the VS Solution and project name to open the project with the corresponding VS version

For conversion issues between low and high version vs VS2008:

Modify the different points of the following 2 versions to change to the corresponding version file (red character modification, gray delete)

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Low version VS2008:

Modify [Solution file. sln] to open with Notepad and find the following information:
Microsoft Visual Studio Solution File, Format Version 10.00
# Visual Studio 2008

Modify the project name. 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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High version VS2013:

Modify [Solution file. sln] to open with Notepad and find the following information:

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
Visualstudioversion = 12.0.31101.0
Minimumvisualstudioversion = 10.0.40219.1

Modify the project name. 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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If you modify the. NET Framework version, be aware that the corresponding modified target version number of the referenced DLL <RequiredTargetFramework>3.5</RequiredTargetFramework>

or after you open the solution, check that the references under the project are normal, do not remove them, and then reference them again.

Vs2008 turned into vs2013. No problem (solution, project name can open compile run normally)

Modify the VS Solution and project name to open the project with the corresponding VS version