Export Trello board and extract the card names and links using C#

I have a Trello board with tons of cards, most of them archived, and I want to go through all of them and determine which ones are worth documenting. In order to that I need to export the board as JSON and extract out the relevant data for each card – which for me is the title, labels, if it’s archived, and a link to the card. This article shows how to do that.

Export Trello board as JSON

  1. Click Show Menu in the top-right corner
  2. Click …More
  3. Click Print and Export
  4. Click Export as JSON
  5. This will open the JSON in the browser, just wait a lil bit
  6. Right-click and Save As to your computer

Create a new console app project and add Newtonsoft as a reference

I always use Newtonsoft when working with JSON.

Examine the JSON structure

In order to know how to extract the relevant data I first need to examine the data and figure out the structure. Here are the relevant parts of the JSON data:

...irrelevant fields...
	"cards": [{
	    ...irrelevant fields...
		"closed": true,
		"name": "example card name",
		"labels": [{"name":"exampleLabel"}],
		"shortUrl": "the card's url"

Extract the relevant fields and save as CSV

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;

namespace TrelloExtractor
    class Program
        static void Main(string[] args)
            //load the JSON file
            var jsonFileContent = File.ReadAllText(@"C:\Data\trelloData.json");

            //deserialize into a dynamic object using Newtonsoft
            var json = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(jsonFileContent);

            //initialize the CSV by writing the header
            StringBuilder csv = new StringBuilder();

            //extract the relevant fields
            var cards = json["cards"];
            Console.WriteLine($"Loaded {cards.Count} card(s)");
            foreach(dynamic card in cards)
                var labels = string.Join(" ", (card["labels"] as IEnumerable<dynamic>).Select((label) => label["name"]));

            File.WriteAllText(@"C:\Data\trelloCSV.csv", csv.ToString());

Open in Excel

Now I can use Excel to look at this data.

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