move to net6 for example project

src/ShellProgressBar.Example/Examples/AlternateFinishedColorExample.cs

@@ -6,7 +6,7 @@ namespace ShellProgressBar.Example.Examples
 {
 	public class AlternateFinishedColorExample : ExampleBase
 	{
-		protected override void Start()
+		protected override async Task StartAsync()
 		{
 			var options = new ProgressBarOptions
 			{
@@ -17,23 +17,19 @@ protected override void Start()
 				BackgroundCharacter = '\u2593'
 			};
 
-			using (var pbar = new ProgressBar(100, "100 ticks", options))
-			{
-				Task.Run(
-					() =>
+			using var pbar = new ProgressBar(100, "100 ticks", options);
+			await Task.Run(
+				() =>
+				{
+					for (var i = 0; i < 10; i++)
 					{
-						for (var i = 0; i < 10; i++)
-						{
-							Task.Delay(10).Wait();
-							pbar.Tick($"Step {i}");
-						}
-						pbar.WriteErrorLine("The task ran into an issue!");
-						// OR pbar.ObservedError = true;
-					}).Wait();
-				pbar.Message= "Indicate the task is done, but the status is not Green.";
-			}
-
-			Task.Delay(5000).Wait();
+						Task.Delay(10).Wait();
+						pbar.Tick($"Step {i}");
+					}
+					pbar.WriteErrorLine("The task ran into an issue!");
+					// OR pbar.ObservedError = true;
+				});
+			pbar.Message= "Indicate the task is done, but the status is not Green.";
 		}
 
 

src/ShellProgressBar.Example/Examples/ChildrenExample.cs

@@ -1,10 +1,11 @@
 using System;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class ChildrenExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			const int totalTicks = 10;
 			var options = new ProgressBarOptions
@@ -19,16 +20,13 @@ protected override void Start()
 				BackgroundColor = ConsoleColor.DarkGray,
 				ProgressCharacter = '─'
 			};
-			using (var pbar = new ProgressBar(totalTicks, "main progressbar", options))
+			using var pbar = new ProgressBar(totalTicks, "main progressbar", options);
+			TickToCompletion(pbar, totalTicks, sleep: 10, childAction: i =>
 			{
-				TickToCompletion(pbar, totalTicks, sleep: 10, childAction: i =>
-				{
-					using (var child = pbar.Spawn(totalTicks, "child actions", childOptions))
-					{
-						TickToCompletion(child, totalTicks, sleep: 100);
-					}
-				});
-			}
+				using var child = pbar.Spawn(totalTicks, "child actions", childOptions);
+				TickToCompletion(child, totalTicks, sleep: 100);
+			});
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/ChildrenNoCollapseExample.cs

@@ -1,10 +1,11 @@
 using System;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class ChildrenNoCollapseExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			const int totalTicks = 10;
 			var options = new ProgressBarOptions
@@ -20,16 +21,14 @@ protected override void Start()
 				ProgressCharacter = '─',
 				CollapseWhenFinished = false
 			};
-			using (var pbar = new ProgressBar(totalTicks, "main progressbar", options))
+			using var pbar = new ProgressBar(totalTicks, "main progressbar", options);
+			TickToCompletion(pbar, totalTicks, sleep: 10, childAction: i =>
 			{
-				TickToCompletion(pbar, totalTicks, sleep: 10, childAction: i =>
-				{
-					using (var child = pbar.Spawn(totalTicks, "child actions", childOptions))
-					{
-						TickToCompletion(child, totalTicks, sleep: 100);
-					}
-				});
-			}
+				using var child = pbar.Spawn(totalTicks, "child actions", childOptions);
+				TickToCompletion(child, totalTicks, sleep: 100);
+			});
+
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/DontDisplayInRealTimeExample.cs

@@ -1,8 +1,10 @@
+using System.Threading.Tasks;
+
 namespace ShellProgressBar.Example.Examples
 {
 	public class DontDisplayInRealTimeExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			const int totalTicks = 5;
 			var options = new ProgressBarOptions
@@ -13,6 +15,8 @@ protected override void Start()
 			{
 				TickToCompletion(pbar, totalTicks, sleep: 1750);
 			}
+
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/DownloadPogressExample.cs

@@ -2,12 +2,13 @@
 using System.Linq;
 using System.Net;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class DownloadProgressExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			var files = new string[]
 			{
@@ -28,7 +29,11 @@ protected override void Start()
 				using var child = pbar.Spawn(100, "page: " + i, childOptions);
 				try
 				{
+#pragma warning disable CS0618
+#pragma warning disable SYSLIB0014
 					using var client = new WebClient();
+#pragma warning restore CS0618
+#pragma warning restore SYSLIB0014
 					client.DownloadProgressChanged += (o, args) => child.Tick(args.ProgressPercentage);
 					client.DownloadDataCompleted += (o, args) => data = args.Result;
 					client.DownloadDataAsync(new Uri(file));
@@ -44,6 +49,8 @@ protected override void Start()
 					pbar.WriteLine(error.Message);
 				}
 			}
+
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/EstimatedDurationExample.cs

@@ -1,11 +1,12 @@
 using System;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class EstimatedDurationExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			const int totalTicks = 10;
 			var options = new ProgressBarOptions
@@ -29,6 +30,8 @@ protected override void Start()
 					pbar.Tick(estimatedDuration, $"End {i + 1} of {totalTicks}: {initialMessage}");
 				}
 			}
+
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/ExampleBase.cs

@@ -20,15 +20,14 @@ protected void TickToCompletion(IProgressBar pbar, int ticks, int sleep = 1750,
 			}
 		}
 
-		public Task Start(CancellationToken token)
+		public async Task Start(CancellationToken token)
 		{
 			RequestToQuit = false;
 			token.Register(() => RequestToQuit = true);
 
-			this.Start();
-			return Task.FromResult(1);
+			await this.StartAsync();
 		}
 
-		protected abstract void Start();
+		protected abstract Task StartAsync();
 	}
 }

src/ShellProgressBar.Example/Examples/FixedDurationExample.cs

@@ -1,11 +1,12 @@
 using System;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class FixedDurationExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			var options = new ProgressBarOptions
 			{
@@ -24,6 +25,8 @@ protected override void Start()
 					Console.Error.WriteLine($"{nameof(FixedDurationBar)} did not signal {nameof(FixedDurationBar.CompletedHandle)} after {wait}");
 
 			}
+
+			return Task.CompletedTask;
 		}
 
 		private static void LongRunningTask(FixedDurationBar bar)

src/ShellProgressBar.Example/Examples/IndeterminateChildrenNoCollapse.cs

@@ -1,13 +1,14 @@
 using System;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class IndeterminateChildrenNoCollapseExample : ExampleBase
 	{
-		protected override void Start()
+		protected override async Task StartAsync()
 		{
-			const int totalChildren = 10;
+			const int totalChildren = 2;
 			Random random = new Random();
 			var options = new ProgressBarOptions
 			{
@@ -29,7 +30,7 @@ protected override void Start()
 					pbar.Message = $"Start {i} of {totalChildren}: main progressbar";
 					using (var child = pbar.SpawnIndeterminate("child action " + i, childOptions))
 					{
-						Thread.Sleep(1000 * random.Next(5, 15));
+						await Task.Delay(1000 * random.Next(5, 15));
 						child.Finished();
 					}
 					pbar.Tick();

src/ShellProgressBar.Example/Examples/IndeterminateProgressExample.cs

@@ -6,7 +6,7 @@ namespace ShellProgressBar.Example.Examples
 {
 	public class IndeterminateProgressExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			var options = new ProgressBarOptions
 			{
@@ -31,9 +31,7 @@ protected override void Start()
 				pbar.Message= "Finished! Moving on to the next in 5 seconds.";
 			}
 
-			Task.Delay(5000).Wait();
+			return Task.CompletedTask;
 		}
-
-
 	}
 }

src/ShellProgressBar.Example/Examples/MessageBeforeAndAfterExample.cs

@@ -1,10 +1,11 @@
 using System;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class MessageBeforeAndAfterExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			Console.WriteLine("This should not be overwritten");
 			const int totalTicks = 10;
@@ -24,6 +25,7 @@ protected override void Start()
 			}
 
 			Console.WriteLine("This should not be overwritten either afterwards");
+			return Task.CompletedTask;
 		}
 	}
 }

src/ShellProgressBar.Example/Examples/PersistMessageExample.cs

@@ -1,16 +1,18 @@
 using System;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class PersistMessageExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			var options = new ProgressBarOptions
 			{
 				ForegroundColor = ConsoleColor.Yellow,
 				ForegroundColorDone = ConsoleColor.DarkGreen,
+				ForegroundColorError = ConsoleColor.Red,
 				BackgroundColor = ConsoleColor.DarkGray,
 				BackgroundCharacter = '\u2593',
 				WriteQueuedMessage = o =>
@@ -32,23 +34,24 @@ protected override void Start()
 				}
 			};
 			var wait = TimeSpan.FromSeconds(6);
-			using (var pbar = new FixedDurationBar(wait, "", options))
-			{
-				var t = new Thread(()=> LongRunningTask(pbar));
-				t.Start();
-
-				if (!pbar.CompletedHandle.WaitOne(wait.Subtract(TimeSpan.FromSeconds(.5))))
-					pbar.WriteErrorLine($"{nameof(FixedDurationBar)} did not signal {nameof(FixedDurationBar.CompletedHandle)} after {wait}");
+			using var pbar = new FixedDurationBar(wait, "", options);
+			var t = new Thread(()=> LongRunningTask(pbar));
+			t.Start();
 
+			if (!pbar.CompletedHandle.WaitOne(wait.Subtract(TimeSpan.FromSeconds(.5))))
+			{
+				pbar.WriteErrorLine($"{nameof(FixedDurationBar)} did not signal {nameof(FixedDurationBar.CompletedHandle)} after {wait}");
+				pbar.Dispose();
 			}
+			return Task.CompletedTask;
 		}
 
 		private static void LongRunningTask(FixedDurationBar bar)
 		{
 			for (var i = 0; i < 1_000_000; i++)
 			{
 				bar.Message = $"{i} events";
-				if (bar.IsCompleted) break;
+				if (bar.IsCompleted || bar.ObservedError) break;
 				if (i % 500 == 0) bar.WriteLine($"Report {i} to console above the progressbar");
 				Thread.Sleep(1);
 			}

src/ShellProgressBar.Example/Examples/ProgressBarOnBottomExample.cs

@@ -1,21 +1,22 @@
 using System;
+using System.Threading.Tasks;
 
 namespace ShellProgressBar.Example.Examples
 {
 	public class ProgressBarOnBottomExample : ExampleBase
 	{
-		protected override void Start()
+		protected override Task StartAsync()
 		{
 			const int totalTicks = 10;
 			var options = new ProgressBarOptions
 			{
 				ProgressCharacter = '─',
 				ProgressBarOnBottom = true
 			};
-			using (var pbar = new ProgressBar(totalTicks, "progress bar is on the bottom now", options))
-			{
-				TickToCompletion(pbar, totalTicks, sleep: 500);
-			}
+			using var pbar = new ProgressBar(totalTicks, "progress bar is on the bottom now", options);
+			TickToCompletion(pbar, totalTicks, sleep: 500);
+
+			return Task.CompletedTask;
 		}
 	}
 }