68 lines
2.4 KiB
C#
68 lines
2.4 KiB
C#
using System;
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using System.Reflection;
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namespace WalkingTec.Mvvm.Core.Extensions
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{
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/// <summary>
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/// System Extension
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/// </summary>
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public static class SystemExtension
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{
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#region Guid Extensions
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public static string ToNoSplitString(this Guid self)
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{
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return self.ToString().Replace("-", string.Empty);
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}
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#endregion
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/// <summary>
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/// 将CrudVM中Entity的关联字段设为空并返回一个新的CrudVM
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/// </summary>
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/// <param name="self"></param>
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/// <returns></returns>
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public static object GetCleanCrudVM(this object self)
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{
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var mtype = self.GetType();
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if(typeof(IBaseCRUDVM<TopBasePoco>).IsAssignableFrom(mtype))
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{
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var rv = mtype.GetConstructor(Type.EmptyTypes).Invoke(null);
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var toppros = mtype.GetAllProperties();
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foreach (var tpro in toppros)
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{
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if(tpro.Name == "Entity")
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{
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var entity = tpro.GetValue(self);
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var pros = tpro.PropertyType.GetAllProperties();
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var newEntity = tpro.PropertyType.GetConstructor(Type.EmptyTypes).Invoke(null);
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bool isBasePoco = typeof(IBasePoco).IsAssignableFrom(tpro.PropertyType);
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//将所有TopBasePoco的属性赋空值，防止添加关联的重复内容
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foreach (var pro in pros)
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{
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if (pro.PropertyType.GetTypeInfo().IsSubclassOf(typeof(TopBasePoco)) == false)
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{
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if (isBasePoco == false || (pro.Name != "UpdateTime" && pro.Name != "UpdateBy"))
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{
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pro.SetValue(newEntity, pro.GetValue(entity));
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}
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}
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}
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tpro.SetValue(rv, newEntity);
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}
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else
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{
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if (tpro.CanWrite)
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{
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tpro.SetValue(rv, tpro.GetValue(self));
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}
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}
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}
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return rv;
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}
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return null;
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}
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}
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}
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