实体类
class Product { public string Id { get; set; } public string Name { get; set; } public List<ProductDetail> Detail { get; set; } public List<ProductComment> Comment { get; set; } } class ProductDetail { public string DtlId { get; set; } public string Id { get; set; } public decimal Number { get; set; } public decimal Price { get; set; } public decimal Amount { get; set; } } class ProductComment { public string DtlId { get; set; } public string Id { get; set; } public string Comment { get; set; } }
反射获取属性值等,中间加了小数位数保留的操作(黄色部分)
static void FromatDitits<T>(T model) { var newType = model.GetType(); foreach (var item in newType.GetRuntimeProperties()) { var type = item.PropertyType.Name; var IsGenericType = item.PropertyType.IsGenericType; var list = item.PropertyType.GetInterface("IEnumerable", false); Console.WriteLine($"属性名称:{item.Name},类型:{type},值:{item.GetValue(model)}"); if (IsGenericType && list != null) { var listVal = item.GetValue(model) as IEnumerable<object>; if (listVal == null) continue; foreach (var aa in listVal) { var dtype = aa.GetType(); foreach (var bb in dtype.GetProperties()) { var dtlName = bb.Name.ToLower(); var dtlType = bb.PropertyType.Name; var oldValue = bb.GetValue(aa); if (dtlType == typeof(decimal).Name) { int dit = 4; if (dtlName.Contains("price") || dtlName.Contains("amount")) dit = 2; bb.SetValue(aa, Math.Round(Convert.ToDecimal(oldValue), dit, MidpointRounding.AwayFromZero)); } Console.WriteLine($"子级属性名称:{dtlName},类型:{dtlType},值:{oldValue}"); } } } } }
测试方法:
var model = new Product { Id = "111", Name = "Test1", Detail = new List<ProductDetail> { new ProductDetail{Id="111" ,DtlId="1",Number=12.3568M,Price=5.689M,Amount=70.2978352M}, new ProductDetail{Id="111",DtlId="2",Number=12.35M,Price=5.689M,Amount=70.2978352M}, new ProductDetail{Id="111",DtlId="3",Number=12.358M,Price=5.689M,Amount=70.304662M}, } }; FromatDitits<Product>(model); Console.WriteLine("----------------------------"); foreach (var item in model.Detail) { Console.WriteLine($"Number值为:{item.Number},Price值为:{item.Price},Amount值为:{item.Amount}"); } Console.ReadKey();
结果显示: