In global.asax:
protected void Application_BeginRequest(Object sender, EventArgs e) { HttpRuntimeSection runTime = (HttpRuntimeSection)WebConfigurationManager.GetSection("system.web/httpRuntime"); //Approx 100 Kb(for page content) size has been deducted because the maxRequestLength proprty is the page size, not only the file upload size int maxRequestLength = (runTime.MaxRequestLength - 100) * 1024;
//This code is used to check the request length of the page and if the request length is greater than
//MaxRequestLength then retrun to the same page with extra query string value action=exception
HttpContext context \= ((HttpApplication)sender).Context;
if(context.Request.ContentLength \> maxRequestLength)
{
IServiceProvider provider = (IServiceProvider)context; HttpWorkerRequest workerRequest = (HttpWorkerRequest)provider.GetService(typeof(HttpWorkerRequest)); // Check if body contains data if(workerRequest.HasEntityBody) { // get the total body length int requestLength = workerRequest.GetTotalEntityBodyLength; // Get the initial bytes loaded int initialBytes = 0; if(workerRequest.GetPreloadedEntityBody != null) initialBytes = workerRequest.GetPreloadedEntityBody.Length; if(!workerRequest.IsEntireEntityBodyIsPreloaded) { byte[] buffer = new byte[512000]; // Set the received bytes to initial bytes before start reading int receivedBytes = initialBytes; while(requestLength - receivedBytes >= initialBytes) { // Read another set of bytes initialBytes = workerRequest.ReadEntityBody(buffer, buffer.Length); // Update the received bytes receivedBytes += initialBytes; } initialBytes = workerRequest.ReadEntityBody(buffer, requestLength - receivedBytes); } } // Redirect the user to the same page with querystring action=exception. context.Response.Redirect("~/Erros/FicheiroGrande.aspx"); } }