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C# - Email to PDF

PDF from Email sample in Email to PDF demonstrating ‘C#’

Program.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace ByteScoutWebApiExample
{
	class Program
	{
		// The authentication key (API Key).
		// Get your own by registering at https://app.pdf.co
		const String API_KEY = "***********************************";

		// Source Email file. Both MSG or EML extensions are supported
		const string SourceFile = @".\sample.eml";

		// Ouput file path
		const string DestinationFile = @"output.pdf";

		static void Main(string[] args)
		{
			// Create standard .NET web client instance
			WebClient webClient = new WebClient();

			// Set API Key
			webClient.Headers.Add("x-api-key", API_KEY);

			// 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
			// * If you already have a direct file URL, skip to the step 3.
			
			// Prepare URL for `Get Presigned URL` API call
			string query = Uri.EscapeUriString(string.Format(
				"https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}", 
				Path.GetFileName(SourceFile)));

			try
			{
				// Execute request
				string response = webClient.DownloadString(query);

				// Parse JSON response
				JObject json = JObject.Parse(response);

				if (json["error"].ToObject<bool>() == false)
				{
					// Get URL to use for the file upload
					string uploadUrl = json["presignedUrl"].ToString();
					string uploadedFileUrl = json["url"].ToString();

					// 2. UPLOAD THE FILE TO CLOUD.

					webClient.Headers.Add("content-type", "application/octet-stream");
					webClient.UploadFile(uploadUrl, "PUT", SourceFile); // You can use UploadData() instead if your file is byte[] or Stream
					webClient.Headers.Remove("content-type");

					// 3. Perform convert to PDF

					// URL for `PDF FROM Email` API call
					var url = "https://api.pdf.co/v1/pdf/convert/from/email";

					// Prepare requests params as JSON
					Dictionary<string, object> parameters = new Dictionary<string, object>();

					// Link to input EML or MSG file to be converted.
					// You can pass link to file from Google Drive, Dropbox or another online file service that can generate shareable links. 
					// You can also use built-in PDF.co cloud storage located at https://app.pdf.co/files or upload your file as temporary file right before making this API call (see Upload and Manage Files section for more details on uploading files via API).
					parameters.Add("url", uploadedFileUrl);

					// True by default. 
					// Set to true to automatically embeds all attachments from original input email MSG or EML fileas files into final output PDF. 
					// Set to false if you don’t want to embed attachments so it will convert only the body of input email.
					parameters.Add("embedAttachments", true);

					// true by default. 
					// Converts attachments that are supported by API (doc, docx, html, png, jpg etc) into PDF and merges into output final PDF. 
					// Non-supported file types are added as PDF attachments (Adobe Reader or another viewer maybe required to view PDF attachments).
					// Set to false if you don’t want to convert attachments from original email and want to embed them as original files (as embedded pdf attachments). 
					parameters.Add("convertAttachments", true);

					// Can be Letter, A4, A5, A6 or custom size like 200x200
					parameters.Add("paperSize", "Letter");

					// Name of output PDF
					parameters.Add("name", "email-with-attachments");

					// Set to true to run as async job in background (recommended for heavy documents).
					parameters.Add("async", true);

					// Convert dictionary of params to JSON
					string jsonPayload = JsonConvert.SerializeObject(parameters);

					// Execute POST request with JSON payload
					response = webClient.UploadString(url, jsonPayload);

					// Parse JSON response
					json = JObject.Parse(response);

					if (json["error"].ToObject<bool>() == false)
					{
						// Asynchronous job ID
						string jobId = json["jobId"].ToString();
						// URL of generated TXT file that will be available after the job completion
						string resultFileUrl = json["url"].ToString();

						// Check the job status in a loop. 
						// If you don't want to pause the main thread you can rework the code 
						// to use a separate thread for the status checking and completion.
						do
						{
							string status = CheckJobStatus(jobId); // Possible statuses: "working", "failed", "aborted", "success".

							// Display timestamp and status (for demo purposes)
							Console.WriteLine(DateTime.Now.ToLongTimeString() + ": " + status);

							if (status == "success")
							{
								// Download output file
								webClient.DownloadFile(resultFileUrl, DestinationFile);

								Console.WriteLine("Generated PDF file saved as \"{0}\" file.", DestinationFile);
								break;
							}
							else if (status == "working")
							{
								// Pause for a few seconds
								Thread.Sleep(2000);
							}
							else
							{
								Console.WriteLine(status);
								break;
							}
						}
						while (true);
					}
					else
					{
						Console.WriteLine(json["message"].ToString());
					}
				}
				else
				{
					Console.WriteLine(json["message"].ToString());
				}
			}
			catch (WebException e)
			{
				Console.WriteLine(e.ToString());
			}

			webClient.Dispose();

			Console.WriteLine();
			Console.WriteLine("Press any key...");
			Console.ReadKey();
		}

		/// <summary>
		/// Checks Job Status
		/// </summary>
		static string CheckJobStatus(string jobId)
		{
			using (WebClient webClient = new WebClient())
			{
				// Set API Key
				webClient.Headers.Add("x-api-key", API_KEY);

				string url = "https://api.pdf.co/v1/job/check?jobid=" + jobId;

				string response = webClient.DownloadString(url);
				JObject json = JObject.Parse(response);

				return Convert.ToString(json["status"]);
			}
		}

	}
}

Program.cs
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Net;
using System.Threading;

namespace ByteScoutWebApiExample
{
    class Program
	{
		// The authentication key (API Key).
		// Get your own by registering at https://app.pdf.co
		const String API_KEY = "***********************************";

		// Source Email file to convert
        // You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
		const string SourceFileUrl = @"https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/email-to-pdf/sample.eml";

		// Ouput file path
		const string DestinationFile = @"output.pdf";

		// (!) Make asynchronous job
		const bool Async = true;


		static void Main(string[] args)
		{
			// Create standard .NET web client instance
			WebClient webClient = new WebClient();

			// Set API Key
			webClient.Headers.Add("x-api-key", API_KEY);

			try
			{
				// URL for `PDF FROM Email` API call
				var url = "https://api.pdf.co/v1/pdf/convert/from/email";

				// Prepare requests params as JSON
				Dictionary<string, object> parameters = new Dictionary<string, object>();

				// Link to input EML or MSG file to be converted.
				// You can pass link to file from Google Drive, Dropbox or another online file service that can generate shareable links. 
				// You can also use built-in PDF.co cloud storage located at https://app.pdf.co/files or upload your file as temporary file right before making this API call (see Upload and Manage Files section for more details on uploading files via API).
				parameters.Add("url", SourceFileUrl);

				// True by default. 
				// Set to true to automatically embeds all attachments from original input email MSG or EML fileas files into final output PDF. 
				// Set to false if you don’t want to embed attachments so it will convert only the body of input email.
				parameters.Add("embedAttachments", true);

				// true by default. 
				// Converts attachments that are supported by API (doc, docx, html, png, jpg etc) into PDF and merges into output final PDF. 
				// Non-supported file types are added as PDF attachments (Adobe Reader or another viewer maybe required to view PDF attachments).
				// Set to false if you don’t want to convert attachments from original email and want to embed them as original files (as embedded pdf attachments). 
				parameters.Add("convertAttachments", true);

				// Can be Letter, A4, A5, A6 or custom size like 200x200
				parameters.Add("paperSize", "Letter");

				// Name of output PDF
				parameters.Add("name", "email-with-attachments");

				// Set to true to run as async job in background (recommended for heavy documents).
				parameters.Add("async", Async);

				// Convert dictionary of params to JSON
				string jsonPayload = JsonConvert.SerializeObject(parameters);

				// Execute POST request with JSON payload
				string response = webClient.UploadString(url, jsonPayload);

				// Parse JSON response
				JObject json = JObject.Parse(response);

				if (json["error"].ToObject<bool>() == false)
				{
					// Asynchronous job ID
					string jobId = json["jobId"].ToString();
					// URL of generated JSON file available after the job completion; it will contain URLs of result PDF files.
					string resultFileUrl = json["url"].ToString();

					// Check the job status in a loop. 
					// If you don't want to pause the main thread you can rework the code 
					// to use a separate thread for the status checking and completion.
					do
					{
						string status = CheckJobStatus(jobId); // Possible statuses: "working", "failed", "aborted", "success".

						// Display timestamp and status (for demo purposes)
						Console.WriteLine(DateTime.Now.ToLongTimeString() + ": " + status);

						if (status == "success")
						{
							// Download output file
							webClient.DownloadFile(resultFileUrl, DestinationFile);

							Console.WriteLine("Generated PDF file saved as \"{0}\" file.", DestinationFile);
							break;
						}
						else if (status == "working")
						{
							// Pause for a few seconds
							Thread.Sleep(3000);
						}
						else
						{
							Console.WriteLine(status);
							break;
						}
					}
					while (true);
				}
				else
				{
					Console.WriteLine(json["message"].ToString());
				}
			}
			catch (WebException e)
			{
				Console.WriteLine(e.ToString());
			}

			webClient.Dispose();


			Console.WriteLine();
			Console.WriteLine("Press any key...");
			Console.ReadKey();
		}

		/// <summary>
		/// Checks Job Status
		/// </summary>
		static string CheckJobStatus(string jobId)
		{
			using (WebClient webClient = new WebClient())
			{
				// Set API Key
                webClient.Headers.Add("x-api-key", API_KEY);
				
				string url = "https://api.pdf.co/v1/job/check?jobid=" + jobId;

				string response = webClient.DownloadString(url);
				JObject json = JObject.Parse(response);

				return Convert.ToString(json["status"]);
			}
		}
	}
}

Program.cs
using System;
using RestSharp;

namespace HelloWorldApplication {

		class HelloWorld {

				static void Main(string[] args) {

						var client = new RestClient("https://api.pdf.co/v1/pdf/convert/from/email");
						client.Timeout = -1;

						var request = new RestRequest(Method.POST);
						request.AddHeader("Content-Type", "application/json");
						request.AddHeader("x-api-key", "{{x-api-key}}");

				        // You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
						request.AddParameter("application/json", "{\n    \"url\": \"https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/email-to-pdf/sample.eml\",\n    \"embedAttachments\": true,\n    \"name\": \"email-with-attachments\",\n    \"async\": false,\n    \"encrypt\": false,\n    \"profiles\": \"{\\\"orientation\\\": \\\"landscape\\\", \\\"paperSize\\\": \\\"letter\\\" }\"\n}",  ParameterType.RequestBody);

						IRestResponse response = client.Execute(request);

						Console.WriteLine(response.Content);
				}

		}

}

PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.

Get your PDF.co API key here!

Download Source Code (.zip)

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