C# 使用lambda表达式在列表中赋值

我有以下课程：

public class ProviderQualificationTimeViewModel
{
    public string SessionId { get; set; }
    public List<ProviderQualificationDetail> ProviderQualificationDetails { get; set; }
}

public class ProviderQualificationDetail
{
    public string ProviderName { get; set; }
    public string ProviderQualificationTime { get; set; }
    public string TotalServiceableOffers { get; set; }
}

试试这个

List<ProviderQualificationDetail> providerQualificationDetail = new List<ProviderQualificationDetail>();

foreach (ProviderModel providers in allProviders)
{
    if(!providerQualificationDetail.Any(p=>p.ProviderName.Contains(providerName)))
    {
        ProviderQualificationDetail ProviderQualificationDetail = new ProviderQualificationDetail();
        ProviderQualificationDetail.ProviderName = providerName;
        ProviderQualificationDetail.ProviderQualificationTime = Math.Round(processingTime).ToString();
        ProviderQualificationDetail.TotalServiceableOffers = "Not serviceable";
        providerQualificationDetail.Add(ProviderQualificationDetail);
    }
    else
    {
var qualificationDetail = providerQualificationDetail.SingleOrDefault(p => p.ProviderName.Equals(providerName));
//Assing your values here
//example; 
qualificationDetail.ProviderName = NewProviderName.ToString();
providerQualificationDetail.SaveChanges();
    }
}

List providerQualificationDetail=新列表（）；
foreach（所有提供者中的ProviderModel提供者）
{
如果（！providerQualificationDetail.Any（p=>p.ProviderName.Contains（ProviderName）））
{
ProviderQualificationDetail ProviderQualificationDetail=新ProviderQualificationDetail（）；
ProviderQualificationDetail.ProviderName=ProviderName；
ProviderQualificationDetail.ProviderQualificationTime=Math.Round（processingTime）.ToString（）；
ProviderQualificationDetail.TotalServicealOffers=“不可维修”；
providerQualificationDetail.Add（providerQualificationDetail）；
}
其他的
{
var qualificationDetail=providerQualificationDetail.SingleOrDefault（p=>p.ProviderName.Equals（ProviderName））；
//在这里强调你的价值观
//榜样；
qualificationDetail.ProviderName=NewProviderName.ToString（）；
providerQualificationDetail.SaveChanges（）；
}
}

类似于其他部分：

foreach (var item in providerQualificationDetail.Where(x => x.ProviderName== providerName))
{
item.ProviderQualificationTime = Math.Round(processingTime).ToString();
}

或

或

---

那是ProviderModel.providerName吗？

foreach (var item in providerQualificationDetail.Where(x => x.ProviderName== providerName))
{
item.ProviderQualificationTime = Math.Round(processingTime).ToString();
}

providerQualificationDetail.Where(x => x.ProviderName == ProviderName).Select(c =>                      
{
c.ProviderQualificationTime = "new time ";
return providerQualificationDetail;
}).ToList();

providerQualificationDetail.ForEach(x =>
{
if(x.ProviderName == ProviderName)
x.ProviderQualificationTime = "new time";
});