Aggiunto anche componente esplicito x double oltre che x decimals

EgwCoreLib.Razor/InputDouble.razor

@@ -0,0 +1,65 @@
+@using System.Globalization
+
+<input type="number"
+       value="@FormattedValue"
+       @onchange="OnChange"
+       step="@Step.ToString(CultureInfo.InvariantCulture)"
+       min="@(Min?.ToString(CultureInfo.InvariantCulture))"
+       max="@(Max?.ToString(CultureInfo.InvariantCulture))"
+       class="@CssClass" />
+
+@code {
+    /// <summary>
+    /// Actual bind value
+    /// </summary>
+    [Parameter]
+    public double Value { get; set; }
+
+    /// <summary>
+    /// Event for value changed
+    /// </summary>
+    [Parameter]
+    public EventCallback<double> ValueChanged { get; set; }
+
+    /// <summary>
+    /// Number of decimal places to display
+    /// </summary>
+    [Parameter]
+    public int Decimals { get; set; } = 3;
+
+    /// <summary>
+    /// Step increment
+    /// </summary>
+    [Parameter]
+    public double Step { get; set; } = 0.001;
+
+    /// <summary>
+    /// Minimum value
+    /// </summary>
+    [Parameter]
+    public double? Min { get; set; }
+
+    /// <summary>
+    /// Maximum value
+    /// </summary>
+    [Parameter]
+    public double? Max { get; set; }
+
+    /// <summary>
+    /// CssClass for input component
+    /// </summary>
+    [Parameter]
+    public string CssClass { get; set; } = string.Empty;
+
+    private string FormattedValue => Value.ToString($"F{Decimals}", CultureInfo.InvariantCulture);
+
+    private async Task OnChange(ChangeEventArgs e)
+    {
+        if (double.TryParse(e.Value?.ToString(), NumberStyles.Any, CultureInfo.InvariantCulture, out var parsed))
+        {
+            var rounded = Math.Round(parsed, Decimals);
+            Value = rounded;
+            await ValueChanged.InvokeAsync(rounded);
+        }
+    }
+}