打开Web.config,修改两处。
<system.web>
<httpRuntime maxUrlLength="109999" maxQueryStringLength="2097151" />
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxUrl="109999" maxQueryString="2097151" />
</requestFiltering>
</security>
</system.webServer>