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Create vCard QR Codes using Azure Functions
#r "System.Drawing"
#r "QRCoder.dll"
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using QRCoder;
public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
// Read the json request
var qrRequest = await req.Content.ReadAsAsync<SimpleVCardRequest>();
// Create the vCard string
var vCard = "BEGIN:VCARD\n";
vCard += $"FN:{qrRequest.Name}\n";
vCard += $"TEL;WORK;VOICE:{qrRequest.Phone}\n";
vCard += "END:VCARD";
// Generate de QRCode
QRCodeGenerator qrGenerator = new QRCodeGenerator();
QRCodeData qrCodeData = qrGenerator.CreateQrCode(vCard, QRCodeGenerator.ECCLevel.Q);
QRCode qrCode = new QRCode(qrCodeData);
// Save the QRCode as a jpeg image and send it in the response.
using (Bitmap qrCodeImage = qrCode.GetGraphic(20))
using (MemoryStream ms = new MemoryStream())
qrCodeImage.Save(ms, ImageFormat.Jpeg);
var response = new HttpResponseMessage()
Content = new ByteArrayContent(ms.ToArray()),
StatusCode = HttpStatusCode.OK,
response.Content.Headers.ContentType = new MediaTypeHeaderValue("image/jpeg");
return response;
// Request class to hold the Name and Phone number used to generated the vCard QR Code
public class SimpleVCardRequest
public string Name { get; set; }
public string Phone { get; set; }
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