控制上传大小

  <httpRuntime requestValidationMode="2.0" maxRequestLength="524288000" useFullyQualifiedRedirectUrl="false" executionTimeout="3600"  maxQueryStringLength="102400"/>

<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1048576000" maxQueryString="102400" />
</requestFiltering>
</security>     
</system.webServer>
<system.webServer>

maxAllowedContentLength=xxxxxx 单位k

转载:https://www.cnblogs.com/pukua/p/12598091.html