这么封装就行了:
 public DateTime? CreateTime { get; set; }
        public string CreateTimeStr
        {
            get
            {
                return this.CreateTime?.ToString();
            }
        }
取值去CreateTimeStr
C#DateTime?转DateTime DateTime?转string
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2022-01-21
  这么封装就行了:
 public DateTime? CreateTime { get; set; }
        public string CreateTimeStr
        {
            get
            {
                return this.CreateTime?.ToString();
            }
        }
取值去CreateTimeStr
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