65 lines
2.6 KiB
C#
65 lines
2.6 KiB
C#
using System;
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using System.ComponentModel;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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namespace Falcon.SugarApi
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{
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/// <summary>
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/// Object类型扩展方法
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/// </summary>
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public static class ObjectExtend
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{
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/// <summary>
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/// 对source进行浅表复制，并复制到target中
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/// </summary>
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/// <typeparam name="TSource">原对象类型</typeparam>
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/// <param name="source">原对象</param>
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/// <param name="target">目标对象</param>
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public static TSource CloneTo<TSource>(this TSource source, [NotNull] object target) where TSource : class {
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_ = source ?? throw new ArgumentNullException(nameof(source));
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_ = target ?? throw new ArgumentNullException(nameof(target));
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var all = from s in source.GetType().GetProperties()
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join t in target.GetType().GetProperties() on s.Name equals t.Name
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select new { s, t };
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foreach (var item in all) {
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//item.t.SetValue(target, Convert.ChangeType(item.s.GetValue(source), item.t.PropertyType));
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item.t.SetValue(target,item.s.GetValue(source).ChangeType(item.t.PropertyType));
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}
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return source;
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}
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/// <summary>
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/// 从原对象中浅表复制属性值
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/// </summary>
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/// <typeparam name="Ttarget">目标对象类型</typeparam>
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/// <param name="target">目标对象</param>
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/// <param name="source">原对象</param>
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/// <returns>目标对象</returns>
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public static Ttarget CloneFrom<Ttarget>(this Ttarget target, object source) where Ttarget : class {
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source.CloneTo(target);
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return target;
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}
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/// <summary>
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/// 将对象转换成另一类型，如果转换失败可能返回null。
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/// </summary>
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/// <param name="source">原对象</param>
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/// <param name="targetType">目标类型</param>
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/// <returns>转换后的类型</returns>
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public static object? ChangeType(this object? source,Type targetType) {
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if (targetType == null) {
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throw new ArgumentNullException("targetType");
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}
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if (source==null) {
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return null;
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}
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if (targetType.IsGenericType && targetType.GetGenericTypeDefinition().Equals(typeof(Nullable<>))) {
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NullableConverter nullableConverter = new NullableConverter(targetType);
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targetType = nullableConverter.UnderlyingType;
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}
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return Convert.ChangeType(source, targetType);
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}
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}
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}
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