split code and html

WebAssembly/PageComponents/CounterBase.cs

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+using System.Diagnostics;
+using Microsoft.AspNetCore.Components;
+
+namespace WebAssembly.PageComponents;
+
+public class CounterBase : ComponentBase
+{
+    public int CurrentCount { get; private set; }
+    public bool Cancel { get; private set; }
+    public Stopwatch Stopwatch { get; } = new();
+
+    public async Task Start()
+    {
+        Stopwatch.Start();
+        Cancel = false;
+        while (!Cancel)
+        {
+            CurrentCount++;
+            StateHasChanged();
+            await Task.Delay(10);
+        }
+        Stopwatch.Stop();
+    }
+
+    public void Stop()
+    {
+        Cancel = true;
+    }
+
+    public void Reset()
+    {
+        Cancel = true;
+        CurrentCount = 0;
+        Stopwatch.Reset();
+    }
+}