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!9 可从Enum的[Description]特性读取对应的值

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Merge pull request !9 from KaneLeung/master
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阿翰 2022-12-27 07:27:12 +00:00 committed by Gitee
commit 596bfd827e
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2 changed files with 20 additions and 5 deletions
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9
src/MiniExcel/Attributes/QueryFromDescriptionAttribute.cs Normal file
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@ -0,0 +1,9 @@
using System;
namespace MiniExcelLibs.Attributes
{
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false)]
public class QueryFromDescriptionAttribute : Attribute
{
}
}

16
src/MiniExcel/Utils/TypeHelper.cs
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@ -4,16 +4,15 @@
using MiniExcelLibs.Exceptions; using MiniExcelLibs.Exceptions;
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.ComponentModel;
using System.Data; using System.Data;
using System.Dynamic;
using System.Globalization; using System.Globalization;
using System.IO;
using System.Linq; using System.Linq;
using System.Reflection; using System.Reflection;
internal static partial class TypeHelper internal static partial class TypeHelper
{ {
public static IEnumerable<IDictionary<string, object>> ConvertToEnumerableDictionary(IDataReader reader) public static IEnumerable<IDictionary<string, object>> ConvertToEnumerableDictionary(IDataReader reader)
{ {
while (reader.Read()) while (reader.Read())
{ {
@ -109,7 +108,7 @@
var vs = itemValue?.ToString(); var vs = itemValue?.ToString();
if (pInfo.ExcelFormat != null) if (pInfo.ExcelFormat != null)
{ {
if( pInfo.Property.PropertyType == typeof(DateTimeOffset) && DateTimeOffset.TryParseExact(vs, pInfo.ExcelFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out var _v2)) if (pInfo.Property.PropertyType == typeof(DateTimeOffset) && DateTimeOffset.TryParseExact(vs, pInfo.ExcelFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out var _v2))
{ {
newValue = _v2; newValue = _v2;
} }
@ -143,7 +142,14 @@
} }
else if (pInfo.Property.PropertyType.IsEnum) else if (pInfo.Property.PropertyType.IsEnum)
{ {
newValue = Enum.Parse(pInfo.Property.PropertyType, itemValue?.ToString(), true); var enumFromDesc = pInfo.Property.GetAttribute<QueryFromDescriptionAttribute>();
if (enumFromDesc != null)
{
var fieldInfo = pInfo.Property.PropertyType.GetFields().FirstOrDefault(e => e.GetCustomAttribute<DescriptionAttribute>(false)?.Description == itemValue?.ToString());
if (fieldInfo != null) newValue = Enum.Parse(pInfo.Property.PropertyType, fieldInfo.Name, true);
else Enum.Parse(pInfo.Property.PropertyType, itemValue?.ToString(), true);
}
else newValue = Enum.Parse(pInfo.Property.PropertyType, itemValue?.ToString(), true);
} }
else else
{ {