View.cs

using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using static System.ConsoleColor;

// ReSharper disable AnnotateCanBeNullParameter
// ReSharper disable AnnotateNotNullParameter
namespace Alba.CsConsoleFormat.Sample.ProcessManager
{
    internal static class View
    {
        private static readonly LineThickness StrokeHeader = new LineThickness(LineWidth.None, LineWidth.Double);
        private static readonly LineThickness StrokeRight = new LineThickness(LineWidth.None, LineWidth.None, LineWidth.Single, LineWidth.None);

        public static Document PressEnter() =>
            new Document {
                Background = Black, Color = Gray,
                Children = {
                    "\nPress ",
                    new Span("ENTER") { Color = Black, Background = Gray },
                    " to continue..."
                }
            };

        public static Document ProcessList(IEnumerable<Process> processes) =>
            new Document {
                Background = Black, Color = Gray,
                Children = {
                    new Grid {
                        Stroke = StrokeHeader, StrokeColor = DarkGray,
                        Columns = {
                            new Column { Width = GridLength.Auto },
                            new Column { Width = GridLength.Auto, MaxWidth = 20 },
                            new Column { Width = GridLength.Star(1) },
                            new Column { Width = GridLength.Auto }
                        },
                        Children = {
                            new Cell("Id") { Stroke = StrokeHeader, Color = White },
                            new Cell("Name") { Stroke = StrokeHeader, Color = White },
                            new Cell("Main Window Title") { Stroke = StrokeHeader, Color = White },
                            new Cell("Private Memory") { Stroke = StrokeHeader, Color = White },
                            processes.Select(process => new[] {
                                new Cell {
                                    Stroke = StrokeRight,
                                    Children = { process.Id }
                                },
                                new Cell {
                                    Stroke = StrokeRight, Color = Yellow, TextWrap = TextWrap.NoWrap,
                                    Children = { process.ProcessName }
                                },
                                new Cell {
                                    Stroke = StrokeRight, Color = White, TextWrap = TextWrap.NoWrap,
                                    Children = { process.MainWindowTitle }
                                },
                                new Cell {
                                    Stroke = LineThickness.None, Align = Align.Right,
                                    Children = { process.PrivateMemorySize64.ToString("n0") }
                                },
                            })
                        }
                    }
                }
            };
    }
}