61 lines
2.4 KiB
C#
61 lines
2.4 KiB
C#
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using System.Globalization;
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using System.Windows.Data;
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namespace YY.Admin.Core.Converter
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{
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/// <summary>
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/// 将枚举值和 bool 互转，适用于 ToggleButton 或 RadioButton
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/// </summary>
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public class EnumToBoolConverter : IValueConverter
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{
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/// <summary>
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/// 将枚举值转换为 bool
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/// </summary>
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/// <param name="value">绑定的枚举值</param>
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/// <param name="targetType"></param>
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/// <param name="parameter">ConverterParameter 指定要匹配的枚举值</param>
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/// <param name="culture"></param>
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/// <returns>匹配返回 true，否则 false</returns>
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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string enumValue = value?.ToString() ?? string.Empty;
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string targetValue = parameter?.ToString() ?? string.Empty;
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return enumValue.Equals(targetValue, StringComparison.OrdinalIgnoreCase);
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}
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/// <summary>
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/// 将 bool 转回枚举值
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/// </summary>
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/// <param name="value">ToggleButton.IsChecked</param>
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/// <param name="targetType"></param>
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/// <param name="parameter">ConverterParameter 指定对应的枚举值</param>
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/// <param name="culture"></param>
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/// <returns>如果 true 返回枚举，否则返回 Binding.DoNothing</returns>
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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if (value is bool isChecked && isChecked && parameter != null)
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{
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// 判断 targetType 是否是 Nullable 类型
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if (Nullable.GetUnderlyingType(targetType) != null)
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{
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// 获取 Nullable 的基础类型
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Type underlyingType = Nullable.GetUnderlyingType(targetType)!;
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// 确保基础类型是枚举类型
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if (underlyingType?.IsEnum == true)
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{
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return Enum.Parse(underlyingType, parameter.ToString()!);
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}
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}
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// 如果不是枚举类型或 Nullable 类型，返回 Binding.DoNothing
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else if (targetType.IsEnum)
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{
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return Enum.Parse(targetType, parameter.ToString()!);
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}
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}
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return Binding.DoNothing;
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}
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}
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}
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