C# QR Code Generator | Generate QR Code with Logo in C# | QR Code Creator

download-file.cs

// initialize api
var fileApi = new FileApi(configuration);
// create download file request
var downloadRequest = new DownloadFileRequest("csharp-testing/merged-file.pdf", myStorage);
// download file
Stream downloadResponse = fileApi.DownloadFile(downloadRequest);

// save file in working directory
using (var fileStream = System.IO.File.Create("H:\\groupdocs-cloud-data\\merged-file.pdf"))
{
  downloadResponse.Seek(0, SeekOrigin.Begin);
  downloadResponse.CopyTo(fileStream);
}
Console.WriteLine("File downloaded successfully.");

generate-qr-code-with-logo.cs

var configuration = new GroupDocs.Signature.Cloud.Sdk.Client.Configuration("xxxxxx-xxxxxx-xxxxxxx-xxxxxxxx", "xxxxxxxxxxxxxxxxxxxxxxxx");

var apiInstance = new GroupDocs.Signature.Cloud.Sdk.Api.SignApi(configuration);


//set QR Code options
var signQRCodeOptions = new GroupDocs.Signature.Cloud.Sdk.Model.SignQRCodeOptions()
{

	BackgroundColor = new GroupDocs.Signature.Cloud.Sdk.Model.Color() { Web = "#fcfcfc" },
	Width = 100,
	Height = 80,
	HorizontalAlignment = GroupDocs.Signature.Cloud.Sdk.Model.SignQRCodeOptions.HorizontalAlignmentEnum.Right,
	VerticalAlignment = GroupDocs.Signature.Cloud.Sdk.Model.SignQRCodeOptions.VerticalAlignmentEnum.Center,
	Left = 10,
	Top = 100,
	LocationMeasureType = GroupDocs.Signature.Cloud.Sdk.Model.SignQRCodeOptions.LocationMeasureTypeEnum.Pixels,
	Margin = new GroupDocs.Signature.Cloud.Sdk.Model.Padding { Left = 10, Right = 10, Bottom = 10, Top = 10 },
	MarginMeasureType = GroupDocs.Signature.Cloud.Sdk.Model.SignQRCodeOptions.MarginMeasureTypeEnum.Pixels,
	LogoFilePath = "csharp-testing/logo.jpg"

};

// specify settings for creating request
var settings = new SignSettings();
settings.FileInfo = new GroupDocs.Signature.Cloud.Sdk.Model.FileInfo
{
	FilePath = "csharp-testing/sample.pdf"
};
settings.Options.Add(signQRCodeOptions);
settings.SaveOptions.OutputFilePath = "csharp-testing/out_sample.pdf";

// create signature making request
var request = new GroupDocs.Signature.Cloud.Sdk.Model.Requests.CreateSignaturesRequest()
{
	signSettings = settings

};

var response = apiInstance.CreateSignatures(request);

Debug.Print("FleName: " + response.FileInfo.FilePath);

initialize-API-client.cs

//Get clientId & clientSecret from https://dashboard.groupdocs.cloud (free registration is required).
string clientId = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
string clientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
string myStorage = "test-internal-storage";

var configuration = new Configuration(clientId, clientSecret);
configuration.ApiBaseUrl = "https://api.groupdocs.cloud";

upload-file.cs

// Create necessary API instances
var storageApi = new StorageApi(configuration);
var fileApi = new FileApi(configuration);

var path = @"H:\groupdocs-cloud-data";
var files = Directory.GetFiles(path, "*.pdf", SearchOption.AllDirectories);
       
    foreach (var file in files)
        {
          var relativeFilePath = file.Replace(path, string.Empty).Trim(Path.DirectorySeparatorChar);

          var response = storageApi.ObjectExists(new ObjectExistsRequest(relativeFilePath, myStorage));
          if (response.Exists != null && !response.Exists.Value)
          {
            var fileStream = File.Open(file, FileMode.Open);

            fileApi.UploadFile(new UploadFileRequest(relativeFilePath, fileStream, myStorage));
            fileStream.Close();
          }
        }