<system.web>
<compilation debug="true" targetFramework="4.5" />
<!--<httpRuntime targetFramework="4.5" />-->
<httpRuntime targetFramework="4.5" maxRequestLength="204800" useFullyQualifiedRedirectUrl="true" executionTimeout="300"/>
</system.web>
原文：http://www.cnblogs.com/foreverfendou/p/6307411.html