PdfIntegrationProviderOnObjectDataAdding Method |
Namespace: RadPdf.Integration
Inheriting classes can override this method to perform other tasks or cancel the object data addition altogether. If this method is overridden in an inheriting class, you must call the base implementation.
using System; using System.Web; using RadPdf.Integration; public class CustomPdfIntegrationProvider : PdfIntegrationProvider { public override void OnObjectDataAdding(ObjectDataAddingEventArgs e) { base.OnObjectDataAdding(e); //Set max overhead (1 MB) const int DocumentOverheadMax = 0x100000; //Get current storage overhead available int overheadAvail = DocumentOverheadMax - e.GetDocumentOverhead(); //Get new object size int size = e.Data.Length; //Check if this puts us over our limit if (size > overheadAvail) { //Cancel add object e.Cancel = true; e.CancelMessage = "Adding this object will exceed the available space allocated for this document."; } } }
using Microsoft.AspNetCore.Builder; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; using RadPdf; var builder = WebApplication.CreateBuilder(args); // Add services to the container. builder.Services.AddRazorPages(); builder.Services.AddSession(); // Setup WebApplication var app = builder.Build(); app.UseStaticFiles(); app.UseRouting(); app.UseSession(); app.UseAuthorization(); // Or however you normally process page requests app.MapRazorPages(); // Create middleware settings RadPdfCoreMiddlewareSettings settings = new RadPdfCoreMiddlewareSettings() { // Add SQL Server Connection String, if not using Lite Documents // Sample connection string below connects to a SQL Server Express instance on localhost // TrustServerCertificate=True is set to avoid a trust exception (e.g. "The certificate chain was issued by an authority that is not trusted.") // ConnectionString = @"Server=.\SQLExpress;Database=RadPdf;Trusted_Connection=Yes;TrustServerCertificate=True;", // Add License Key LicenseKey = "DEMO", // Attach the Integration Provider IntegrationProvider = new CustomPdfIntegrationProvider() // To run RAD PDF without the System Service, add UseService = false // If using Lite Documents without the System Service, a LiteStorageProvider must also be implemented //UseService = false }; // Add RAD PDF's middleware to app app.UseRadPdf(settings); app.Run();