App.config

<?xml version="1.0"?>
<configuration>
	<system.codedom>
		<compilers>
			<!-- zero or more compiler elements -->
			<!--<compiler
			  language="c#;cs;csharp"
			  extension=".cs"
			  type="Microsoft.CSharp.CSharpCodeProvider, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
			  compilerOptions=""
			  warningLevel="1" />-->

			<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">

				<providerOption name="CompilerVersion" value="v3.5"/>
			</compiler>

		</compilers>
	</system.codedom>
	<startup useLegacyV2RuntimeActivationPolicy="true">
		<supportedRuntime version="v4.0.30319"/>
		<supportedRuntime version="v2.0.50727"/>
	</startup>
	<!--<startup>
		<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
	</startup>-->
</configuration>