Solve the error caused by too large file when uploading file by asp.net

Even in web.config You can't add nodes and settings to , It's a big mistake ,

    <httpModules>
      <add name="UploadHttpModule" type="Brettle.Web.NeatUpload.UploadHttpModule, Brettle.Web.NeatUpload"/>
    </httpModules>
    <httpRuntime executionTimeout="6000000000" maxRequestLength="900000000" useFullyQualifiedRedirectUrl="true" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100" enableVersionHeader="true" maxQueryStringLength="10240"  />

The solution requires the following three things to solve the problem ：

1： stay web.config In file , Of configuration Add the following node to the first node under the node ：

<configuration>
  <!-- Solve the problem that the uploaded file is too big  -->
  <configSections>
    <sectionGroup name="system.web">
      <section name="neatUpload" type="Brettle.Web.NeatUpload.ConfigSectionHandler, Brettle.Web.NeatUpload" allowLocation="true" />
    </sectionGroup>
  </configSections>

2： stay web.config Under the document system.web Add the following nodes under the node of

  <system.web>
    <neatUpload useHttpModule="false" maxNormalRequestLength="40960000" maxRequestLength="20971510000" defaultProvider="FilesystemUploadStorageProvider">
      <providers>
        <add name="FilesystemUploadStorageProvider" type="Brettle.Web.NeatUpload.FilesystemUploadStorageProvider, Brettle.Web.NeatUpload"/>
      </providers>
    </neatUpload>

3： At this time, you will find that the local can upload successfully , But in IIS It's still not good , You need to IIS To set up IIS Upload size , The setting method is as follows ：

modify IIS Of applicationhost.config
file location ： %windir%/system32/inetsrv/config/applicationhost.config


find <requestFiltering> node , Be careful requestFiltering There is no node by default requestLimits Node , You need to add the following nodes , Of course , If the node already exists , Then just modify

Add the following elements to this node ：

<requestLimits maxAllowedContentLength="2147483647" />  ( The size of the upload will be changed to 2G)

At this time, you will find that OK 了 .

Be careful ： In addition to modification IIS The way of documentation , You can also modify the configuration file , I've experienced ：

  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxQueryString="10240" maxAllowedContentLength="2147483647" />
      </requestFiltering>
    </security>