C#实体类null自动转空字符串
C#实体类null自动转空字符串
using System.ComponentModel.DataAnnotations;
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string yptype { set; get; }C#实体类null自动转空字符串
using System.ComponentModel.DataAnnotations;
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string yptype { set; get; }