Write markdown table from an array

Markdown table writing

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

namespace ArrayPlay
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Starting");
            string[][] array = new string[][] 
            {
                new string[] {"Name", "Pay", "Job"},
                new string[] {"A","B","C"},
                new string[] {"safjASDFKJASDKFJSDKFJDKSFKDFJ!", "ASD", "2" }
            };

            AddTable(array);
        }

        private static void AddTable(string[][] data)
        {
            var sb = new StringBuilder();
            // This is using a jagged array even though a 2-dimensional array would be more logical, mostly because 
            // 2d arrays are hard to build for callers.
            int rowCount = data.Length;
            int colCount = data[0].Length;


            // Check all rows are same length
            if (data.Any(r => r.Length != colCount))
            {
                throw new ArgumentException("Not all rows have the same number of columns", nameof(data));
            }

            // Work out column widths
            Span<ushort> colDimensions = stackalloc ushort[colCount];
            for (int column = 0; column < colCount; column++)
            {
                colDimensions[column] = (ushort)data.Select(r => r[column].Length).Max();
            }

            for (int rowNum = 0; rowNum < rowCount; rowNum++)
            {
                var row = data[rowNum];
                sb.Append('|');

                for (int column = 0; column < colCount; column++)
                {
                    sb.Append(row[column].PadRight(colDimensions[column]));
                    sb.Append('|');
                }
                sb.AppendLine();

                if (rowNum == 0)
                {
                    sb.Append('|');
                    for (int column = 0; column < colCount; column++)
                    {
                        sb.Append(new string('-', colDimensions[column]));
                        sb.Append('|');
                    }
                    sb.AppendLine();
                }
                
            }

            Console.Write(sb.ToString());
        }
    }
}