nopCommerce tutorial (2) increase file upload size - Andy Blog

Issue

nopCommerce throws exception when uploading a large file for downloadable products.

Solution

Please modify web.config because nopCommerce uses .NET MVC

Please note that the default maximum filesize in II7 is 30MB. We need to update ‘maxRequestLength’ of ‘httpRuntime’ element in web.config.

<configuration>
    <system.web>
		<!-- default is 4096 kbs or 4MB -->
		<!-- 1024 mb = 1048576 -->
		<!-- 50MB = 51200 -->
        <httpRuntime maxRequestLength="1048576" executionTimeout="3600" />
    </system.web>
</configuration>

For IIS7 and above, we also need to add the lines below:

 <system.webServer>
   <security>
      <requestFiltering>
		 <!-- default is 30000000 or approx. 28.6102 Mb -->
		 <!-- 1024 MB = 1073741824 -->
		 <!-- 50MB = 52428800 -->
         <requestLimits maxAllowedContentLength="1073741824" />
      </requestFiltering>
   </security>
 </system.webServer>

Here is the sample web.config:

Please note both of these values must match. But keep in mind maxAllowedContentLength is measured in bytes while maxRequestLength is measured in kilobytes. In this case, the max upload(maxRequestLength) is 50mb = 51200kb, and maxAllowedContentLength has 52428800 bytes.

.NET Core solution

In .NET Core, it might throw “Multipart body length limit 134217728 exceeded” exception. It is related to the ASP.NET Core specificity and not relevant to front-end uploader.

Please fix .net core web project > Startup.cs

public IServiceProvider ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();
        services.Configure<FormOptions>(o => {
            o.ValueLengthLimit = int.MaxValue;
            o.MultipartBodyLengthLimit = int.MaxValue;
            o.MemoryBufferThreshold = int.MaxValue;
        });

        return services.ConfigureApplicationServices(Configuration);
    }

right cick web project > properties > build/debug tab > target x64