C# 如何从字典中找到价值<；int，IEnumerable<；结构>&燃气轮机；

我有一本字典，

SalaryFitnementDictionary

，我想根据以下示例查询它（linq或lambda）：其中

employeedId=1

和

EarningDecretionId=145

，并获取余额的值，

EDBalance

我将如何实现这一点

var balance = salaryFitmentDictionary.Where...

Dictionary<int, IEnumerable<SalaryFitmentInfoMonth>> salaryFitmentDictionary = new Dictionary<int, IEnumerable<SalaryFitmentInfoMonth>>();

employeeIdList.ToList().ForEach(employeedId =>
{
    var perEmployeeFitments = from pf in _db.PayFitments.AsEnumerable()
                              join ed in _db.EarningDeductions.AsEnumerable()
                              on pf.EarningDeductionId equals ed.EarningDeductionId
                              where pf.EmployeeId == employeedId
                              select new SalaryFitmentInfoMonth
                              {
                                   EDId = pf.EarningDeductionId,
                                   EDAmount = pf.Amount,
                                   EDBalance = pf.Balance.GetValueOrDefault(),
                                   EDType = ed.EDType,
                                   IsTaxable = ed.IsTaxable,
                                   IsBenefit = ed.IsBenefit,
                                   IsLoan = ed.IsLoan,
                                   IsAdvance = ed.IsAdvance,
                                   Limit = ed.TaxIfMoreThan.GetValueOrDefault()
                              };

    salaryFitmentDictionary.Add(employeedId, perEmployeeFitments);
});

public struct SalaryFitmentInfoMonth
{
    public int EDId { get; set; }
    public decimal EDAmount { get; set; }
    public decimal? EDBalance { get; set; }
    public EarnDeduct EDType { get; set; }
    public bool IsTaxable { get; set; }
    public bool IsBenefit { get; set; }
    public bool IsLoan { get; set; }
    public bool IsAdvance { get; set; }
    public decimal? Limit { get; set; }
 }

var balance=salaryFitmentDictionary。其中。。。
Dictionary salaryFitmentDictionary=新字典（）；
employeeIdList.ToList（）.ForEach（employeedId=>
{
var PeremployeeFittents=来自_db.payFittents.AsEnumerable（）中的pf
加入ed加入_db.EarningDeclements.AsEnumerable（）
关于pf.earningdecreditionid等于ed.earningdecreditionid
其中pf.EmployeeId==EmployeeId
选择新的SalaryFitmentInfoMonth
{
EDId=pf.EarningDecreditionID，
EDAmount=pf.金额，
EDBalance=pf.Balance.GetValueOrDefault（），
EDType=ed.EDType，
IsTaxable=ed.IsTaxable，
IsBenefit=ed.IsBenefit，
IsLoan=ed.IsLoan，
IsAdvance=ed.IsAdvance，
Limit=ed.TaxIfMoreThan.getValuerDefault（）
};
添加（EmployeeId，PeremployeeFittments）；
});
public struct SalaryFitmentInfoMonth
{
公共int EDId{get；set；}
公共十进制数{get；set；}
公共十进制数？EDBalance{get；set；}
公共数据类型{get；set；}
公共布尔IsTaxable{get；set；}
公共bool IsBenefit{get；set；}
公共bool IsLoan{get；set；}
公共bool IsAdvance{get；set；}
公共十进制？限制{get；set；}
}

如果您希望有多个匹配项，则可以使用

Enumerable.Where

而不是

FirstOrDefault

如果您希望有多个匹配项，则可以使用

Enumerable.Where

而不是

FirstOrDefault

如果您希望有多个匹配项，则可以使用

Enumerable.Where

而不是

FirstOrDefault

如果需要多个匹配项，可以使用

可枚举。其中

而不是

FirstOrDefault

可以使用LINQ方法语法中的方法：

Int32 id = 1;
Int32 edId = 147;

var result = salaryFitmentDictionary.
    Where((pair) => pair.Key == id ).
    SelectMany((pair) =>
        pair.Value.Where((perEmployeeFitment) => perEmployeeFitment.EDId == edId)).
    Select(perEmployeeFitment => perEmployeeFitment.EDBalance).
    Single();

或在查询语法中：

Int32 id = 1;
Int32 edId = 147;

var result = (from pair in salaryFitmentDictionary
    from perEmployeeFitment in pair.Value
    where pair.Key == id
    where perEmployeeFitment.EDId == edId
    select perEmployeeFitment.EDBalance).Single();

可以在LINQ方法语法中使用方法：

Int32 id = 1;
Int32 edId = 147;

var result = salaryFitmentDictionary.
    Where((pair) => pair.Key == id ).
    SelectMany((pair) =>
        pair.Value.Where((perEmployeeFitment) => perEmployeeFitment.EDId == edId)).
    Select(perEmployeeFitment => perEmployeeFitment.EDBalance).
    Single();

或在查询语法中：

Int32 id = 1;
Int32 edId = 147;

var result = (from pair in salaryFitmentDictionary
    from perEmployeeFitment in pair.Value
    where pair.Key == id
    where perEmployeeFitment.EDId == edId
    select perEmployeeFitment.EDBalance).Single();

可以在LINQ方法语法中使用方法：

Int32 id = 1;
Int32 edId = 147;

var result = salaryFitmentDictionary.
    Where((pair) => pair.Key == id ).
    SelectMany((pair) =>
        pair.Value.Where((perEmployeeFitment) => perEmployeeFitment.EDId == edId)).
    Select(perEmployeeFitment => perEmployeeFitment.EDBalance).
    Single();

或在查询语法中：

Int32 id = 1;
Int32 edId = 147;

var result = (from pair in salaryFitmentDictionary
    from perEmployeeFitment in pair.Value
    where pair.Key == id
    where perEmployeeFitment.EDId == edId
    select perEmployeeFitment.EDBalance).Single();

可以在LINQ方法语法中使用方法：

Int32 id = 1;
Int32 edId = 147;

var result = salaryFitmentDictionary.
    Where((pair) => pair.Key == id ).
    SelectMany((pair) =>
        pair.Value.Where((perEmployeeFitment) => perEmployeeFitment.EDId == edId)).
    Select(perEmployeeFitment => perEmployeeFitment.EDBalance).
    Single();

或在查询语法中：

Int32 id = 1;
Int32 edId = 147;

var result = (from pair in salaryFitmentDictionary
    from perEmployeeFitment in pair.Value
    where pair.Key == id
    where perEmployeeFitment.EDId == edId
    select perEmployeeFitment.EDBalance).Single();

ToList（）.ForEach

ಠ_ಠ<代码>ToList（）.ForEachಠ_ಠ<代码>ToList（）.ForEachಠ_ಠ<代码>ToList（）.ForEachಠ_ಠ