优化更新代码，添加界面功能并整合

WPFluent/Extensions/ContentDialogServiceExtensions.cs

@@ -0,0 +1,57 @@
+
+
+
+using WPFluent.Controls;
+
+using System.Windows.Controls;
+
+namespace WPFluent.Extensions;
+
+public static class ContentDialogServiceExtensions
+{
+    /// <summary>
+    /// Shows the simple alert-like dialog.
+    /// </summary>
+    /// <returns>Result of the life cycle of the <see cref="ContentDialog"/>.</returns>
+    public static Task<ContentDialogResult> ShowAlertAsync(
+        this IContentDialogService dialogService,
+        string title,
+        string message,
+        string closeButtonText,
+        CancellationToken cancellationToken = default)
+    {
+        var dialog = new ContentDialog();
+
+        dialog.SetCurrentValue(ContentDialog.TitleProperty, title);
+        dialog.SetCurrentValue(ContentControl.ContentProperty, message);
+        dialog.SetCurrentValue(ContentDialog.CloseButtonTextProperty, closeButtonText);
+
+        return dialogService.ShowAsync(dialog, cancellationToken);
+    }
+
+    /// <summary>
+    /// Shows simple dialog
+    /// </summary>
+    /// <param name="dialogService">The <see cref="IContentDialogService"/>.</param>
+    /// <param name="options">Set of parameters of the basic dialog box.</param>
+    /// <param name="cancellationToken">The cancellation token.</param>
+    /// <returns>Result of the life cycle of the <see cref="ContentDialog"/>.</returns>
+    public static Task<ContentDialogResult> ShowSimpleDialogAsync(
+        this IContentDialogService dialogService,
+        SimpleContentDialogCreateOptions options,
+        CancellationToken cancellationToken = default)
+    {
+        var dialog = new ContentDialog()
+        {
+            Title = options.Title,
+            Content = options.Content,
+            CloseButtonText = options.CloseButtonText,
+            PrimaryButtonText = options.PrimaryButtonText,
+            SecondaryButtonText = options.SecondaryButtonText,
+            VerticalContentAlignment = VerticalAlignment.Center,
+            HorizontalContentAlignment = HorizontalAlignment.Center
+        };
+
+        return dialogService.ShowAsync(dialog, cancellationToken);
+    }
+}