/// <summary>
/// 取得数据库时间
/// </summary>
/// <returns></returns>
public DateTime GetDbDateTime()
{
//var date = this.DbInstance.Set<T>().Select(c=>SqlFunctions.GetDate()).FirstOrDefault();
//return date.Value;
DateTime result;
object obj = sqlhelper.GetSingle("select GETDATE()");
if (obj == null || !DateTime.TryParse(obj.ToString(), out result))
{
result = DateTime.Now;
}
return(result);
}