优化更新代码，添加界面功能并整合

ShrlAlgo.Toolkit.Mvvm/ValidationRules/DoubleValidationRule.cs

@@ -0,0 +1,12 @@
+using System.Globalization;
+using System.Windows.Controls;
+
+namespace ShrlAlgo.Toolkit.Mvvm.ValidationRules;
+
+public class DoubleValidationRule : ValidationRule
+{
+	public override ValidationResult Validate(object value, CultureInfo cultureInfo)
+	{
+		return double.TryParse((value ?? string.Empty).ToString(), out _) ? ValidationResult.ValidResult : new ValidationResult(false, "输入内容不是数值。");
+	}
+}