添加项目文件。

Sai.Toolkit.Mvvm/Converters/ComparisonConverter.cs

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+using System.Globalization;
+using System.Windows.Data;
+
+namespace Sai.Toolkit.Mvvm.Converters;
+
+public class ComparisonConverter : IValueConverter
+{
+	/// <summary>
+	/// 模型属性到控件属性
+	/// </summary>
+	/// <param name="value"></param>
+	/// <param name="targetType"></param>
+	/// <param name="parameter"></param>
+	/// <param name="culture"></param>
+	/// <returns></returns>
+	public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+	{
+		//value:ViewModel属性，枚举/数字/字符串
+		//parameter：ConverterParameter，枚举/数字/字符串
+		//return (string)parameter == (string)value;
+		//绑定的枚举属性与控件转换参数一致则选中
+		return value.Equals(parameter);
+		//return (string)parameter == (string)value;
+	}
+
+	/// <summary>
+	/// 控件选中，将Converter参数传给模型属性
+	/// </summary>
+	/// <param name="value"></param>
+	/// <param name="targetType"></param>
+	/// <param name="parameter"></param>
+	/// <param name="culture"></param>
+	/// <returns></returns>
+	public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+	{
+		//value:bool 比如RadioButton的check属性
+		//parameter:ConverterParameter枚举
+		//一样才传递给ViewModel
+		//选中则返回枚举类
+		return value is true ? parameter : Binding.DoNothing;
+		//return (bool)value ? parameter : Binding.DoNothing;
+	}
+}