How to target multiple .net frameworks for same build

Question

I am trying to target multiple .net frameworks for the same output build (exe).

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>9.0.30729</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{B4436616-28A2-4B98-9C39-3DA4AC95537E}</ProjectGuid>
<OutputType>WinExe</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace></RootNamespace>
<AssemblyName></AssemblyName>
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion> 

My application works with 2.0 3.0 3.5 and I want to target all in my application.

Any idea?

Answer 1

Version Compatibility in the .NET Framework You should look on this. If you app not using some specific future of .net that are different for this version, you don't need 3 versions.