66 lines
2.0 KiB
C#
66 lines
2.0 KiB
C#
using System.ComponentModel;
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using System.Globalization;
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using System.Reflection;
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using System.Windows.Data;
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namespace ShrlAlgo.Toolkit.Mvvm.Converters;
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/// <summary>
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/// 枚举描述转换
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/// </summary>
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public class EnumDescriptionConverter : IValueConverter
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{
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object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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var myEnum = (Enum)value;
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var description = GetEnumDescription(myEnum);
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return description;
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}
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object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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return string.Empty;
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}
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private string GetEnumDescription(Enum enumObj)
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{
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var fieldInfo = enumObj.GetType().GetField(enumObj.ToString());
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var descriptionAttr = fieldInfo.GetCustomAttributes(false).OfType<DescriptionAttribute>().SingleOrDefault();
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return descriptionAttr == null ? enumObj.ToString() : descriptionAttr.Description;
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}
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}
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/// <summary>
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/// 枚举类上加特性[TypeConverter(typeof(EnumDescriptionTypeConverter))]
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/// </summary>
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//TODO 待测试
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public class EnumDescriptionTypeConverter : EnumConverter
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{
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public EnumDescriptionTypeConverter(Type type) : base(type)
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{
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}
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == typeof(string))
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{
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if (null != value)
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{
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FieldInfo fi = value.GetType().GetField(value.ToString());
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if (null != fi)
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{
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var attributes =
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(DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
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return ((attributes.Length > 0) && (!string.IsNullOrEmpty(attributes[0].Description)))
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? attributes[0].Description
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: value.ToString();
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}
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}
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return string.Empty;
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}
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return base.ConvertTo(context, culture, value, destinationType);
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}
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}
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