我在将DateTime对象存储到数据表中时遇到问题,它会将Kind信息集放到其中,例如,如果DateTime.Kind为UTC,则一旦将其分配给datarow值,它将Kind更改为Unspecified.Please在下面找到代码。

public class LocalTimeToUtcConverter
    {
        public DateTime Convert(DateTime localDate)
        {
            var utcOffset = TimeZoneInfo.Local.GetUtcOffset(localDate);

            var utc = localDate.ToUniversalTime();

            return utc + utcOffset;
        }
    }

 [Test]
        public void Should_set_datetime_column_kind_to_utc()
        {
            var localDate = new DateTime(2010, 11, 01, 00, 00, 00);
            Assert.That(localDate.Kind == DateTimeKind.Unspecified);
            var converter = new LocalTimeToUtcConverter();
            DateTime date = converter.Convert(localDate);
            Assert.That(localDate.Kind == DateTimeKind.Utc);
            var data = CreateTable(date);
            //Failes-Why????
            Assert.That(((DateTime)data.Rows[0].ItemArray[0]).Kind ==   DateTimeKind.Utc);
        }

        private DataTable CreateTable(DateTime date)
        {
            DataTable table = new DataTable();
            table.Columns.Add(new DataColumn("Date1", typeof(DateTime)));

            for (int i = 0; i < 10; i++)
            {
                var newRow = table.NewRow();
                newRow[0] = date;
                table.Rows.Add(newRow);
            }

            return table;
        }

请您告诉我解决方法吗?

谢谢!!!

最佳答案



使用DataColumn.DateTimeMode属性:

var col = new DataColumn("Date1", typeof(DateTime));
col.DateTimeMode = DataSetDateTime.Utc;
table.Columns.Add(col);

是否像您一样将日期存储在UTC的dbase中也没关系。

关于c# - 将datetime对象存储到数据表中时,如何持久化DateTime Kind?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3990809/

10-12 00:25