我在将数据集ds从SQL服务器转换为Web API中的对象时遇到问题。问题只出在＆＃34; float＆＃34;存在于数据集（ds）中。我试图将数据集（ds）转换为对象列表。但它会为所有＆＃34; float＆＃34;抛出一个错误。如果我排除所有浮动，它就可以正常工作。
private static List<TimesheetDetails> ProcessInfo(DataSet ds)
{
bool check = (ds == null);
List<TimesheetDetails> list = ds.Tables[0].AsEnumerable().Select(x => new TimesheetDetails
{
DetailId = x.Field<int>("DetailId"),
TimesheetId = x.Field<int>("TimesheetId"),
Project = x.Field<string>("Project"),
Ac`enter code here`tivity = x.Field<string>("Activity"),
Day1 = x.Field<DateTime> ("Day1"),
**//The Issue comes up here when I try to access the float.**
Day1Hours = x.Field<float> ("Day1Hours"),
Day2 = x.Field<DateTime>("Day2"),
Day2Hours = x.Field<float>("Day2Hours"),
Day3 = x.Field<DateTime>("Day3"),
Day3Hours = x.Field<float>("Day3Hours"),
Day4 = x.Field<DateTime>("Day4"),
Day4Hours = x.Field<float>("Day4Hours"),
Day5 = x.Field<DateTime>("Day5"),
Day5Hours = x.Field<float>("Day5Hours"),
Day6 = x.Field<DateTime>("Day6"),
Day6Hours = x.Field<float>("Day6Hours"),
Day7 = x.Field<DateTime>("Day7"),
Day7Hours = x.Field<float>("Day7Hours")
}).ToList();