Base64 Image loading using Signature API in .NET

rcabrera · May 26, 2021, 1:03pm

Is it possible to load base64 images using the Signature product?

yuriy.mazurchuk · May 26, 2021, 9:23pm

For sure, please see one of example on GitHub here

groupdocs-signature/GroupDocs.Signature-for-.NET/blob/master/Examples/GroupDocs.Signature.Examples.CSharp/AdvancedUsage/Sign/SignWithImagesAdvanced/SignWithBase64ImageAdvanced.cs

using System;
using System.IO;
using System.Drawing;

namespace GroupDocs.Signature.Examples.CSharp.AdvancedUsage
{
    using GroupDocs.Signature;
    using GroupDocs.Signature.Domain;
    using GroupDocs.Signature.Options;

    public class SignWithBase64ImageAdvanced
    {
        /// <summary>
        /// Sign document with image signature applying image from base64 string content
        /// </summary>
        public static void Run()
        {
            Console.WriteLine("\n--------------------------------------------------------------------------------------------------------------------");
            Console.WriteLine("[Example Advanced Usage] # SignWithBase64ImageAdvanced : Sign document with base64 image\n");

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You will only need to create proper MemoryStream from the base64 string and pass this stream as argument to ImageSignOptions

Thank you!