我有一个使用C#的linq查询,并希望对已更改的字段进行排序。该字段是表中定义为YYYYMM的部分日期字段。但是,我希望它在我的中继器中显示为, MM / YYYY,但需要将其排序为YYYYMM。下面是代码,GrantMonthID是有问题的字段。转发器以MM / YYYY顺序显示数据。
谢谢。
var linqQuery = from nn in grantsReceivedDetailList
where (nn.ArrearAuditID == Convert.ToInt32(AdminBasePage.ArrearAuditId))
select
new
{
nn.GrantsReceivedID,
nn.PayeeMPINumber,
Firstname = participantRepository.GetParticipantDetailsbyMemberParticipantIndex(Convert.ToInt32(nn.PayeeMPINumber)).FirstName + " " +
participantRepository.GetParticipantDetailsbyMemberParticipantIndex(Convert.ToInt32(nn.PayeeMPINumber)).LastName,
nn.IVANumber,
GrantMonthID = nn.GrantMonthID.ToString().Substring(4, 2) + "/" + nn.GrantMonthID.ToString().Substring(0, 4),
nn.GrantAmount,
nn.Comments
};
linqQuery = linqQuery.OrderByDescending(y => y.GrantMonthID);
// Execute the linq query and databind
grantListRepeater.DataSource = linqQuery;
grantListRepeater.DataBind();
答案 0 :(得分:4)
只需创建要排序的属性,以及要绑定到的属性:
var query = from x in someList
select new
{
SortField = FormatForSort(x.Field),
DisplayField = FormatForDisplay(x.Field)
};
query = query.OrderBy(x => x.SortField);
或者,按日期选择它,并在转发器中格式化它而不是使用LINQ,因为这更像是一个View问题。
答案 1 :(得分:0)
添加到包含原始数据库日期的匿名类型字段:
var linqQuery =
from nn in grantsReceivedDetailList
where (nn.ArrearAuditID == Convert.ToInt32(AdminBasePage.ArrearAuditId))
select new {
nn.GrantsReceivedID,
nn.PayeeMPINumber,
Firstname = participantRepository.GetParticipantDetailsbyMemberParticipantIndex(Convert.ToInt32(nn.PayeeMPINumber)).FirstName + " " +
participantRepository.GetParticipantDetailsbyMemberParticipantIndex(Convert.ToInt32(nn.PayeeMPINumber)).LastName,
nn.IVANumber,
GrantMonthID = nn.GrantMonthID.ToString().Substring(4, 2) + "/" +
nn.GrantMonthID.ToString().Substring(0, 4),
nn.GrantAmount,
nn.Comments,
GrantMonthIdOriginal = nn.GrantMonthID // this field
};
按此字段排序:
linqQuery = linqQuery.OrderByDescending(y => y.GrantMonthIdOriginal);
grantListRepeater.DataSource = linqQuery;
grantListRepeater.DataBind();