从C＃中的列表创建层次结构中的问题

Question

我正在从存储过程中接收数据到列表中，然后我想使用父级和子级ID将此列表转换为层次结构。我所做的是：

型号：

public class AllAccounts
{
    [Column("account_id")]
    public Guid AccountID { get; set; }
    [Column("parent_id")]
    public Guid ParentID { get; set; }
    [Column("theaccount_name")]
    public string AccountName { get; set; } 
    [Column("paren_tname")]
    public string ParentName { get; set; } 
    [Column("thedescription")]
    public string Description { get; set; }

    [Column("glcode")]
    public string code { get; set; }
    [Column("is_bankaccount")]
    public bool BankAccountStatus { get; set; }
    [Column("bank_acountnumber")]
    public string AccountNumber { get; set; }
    [Column("thecurrency")]
    public string AccountCurrency { get; set; }
    [Column("referenceaccount")]
    public Nullable<int> AccountReference { get; set; }
    [Column("thestatus")]
    public string AccountStatus { get; set; }

    public List<AllAccounts> Children = new List<AllAccounts>();
}

此处的帐户ID为子ID，其父代为父ID。

从存储过程接收数据并找到其根父ID的函数。

public async Task<object> GenerateArrangedCOAList(string businessID, string coaid)
    {
        //calling stored procedure and sending Chart Of Account and fetching data 
        Guid guidBusinessID = new Guid(businessID);
        Guid guidAccountid = coaid != null ? new Guid(coaid) : new Guid();
        var list = await Task.Run(() => webFUDBContext.allAccounts.FromSqlRaw("select * from exportcoa('"+guidBusinessID+"', '" + guidAccountid + "')").ToList());

        var allAccounts = new List<AllAccounts>();
        for (int a = 0; a < list.Count; a++)
        {
            var parentAccountId=list[a].ParentID;
            var parentAccountname = list[a].ParentName;

            for(int b = 0; b < list.Count; b++)
            {
                AllAccounts allAccounts1  = new AllAccounts();
                if (list[b].AccountID == parentAccountId && list[b].AccountName == parentAccountname)
                {
                    allAccounts1.ParentName = parentAccountname;
                    allAccounts1.ParentID = parentAccountId;
                    allAccounts1.AccountID = list[b].AccountID;
                    var childr = FillRecursive(list, parentAccountId);
                    allAccounts1.Children.Add(childr);
                    allAccounts.Add(allAccounts1);
                    list.RemoveAt(b);
                }
            }
        }

        return allAccounts;
    }

创建父级和子级ID的递归函数：

private dynamic FillRecursive(List<AllAccounts> flatObjects, Guid accountID)
    {
        List<AllAccounts> recursiveObjects = new List<AllAccounts>();
        foreach (var item in flatObjects.Where(x => x.ParentID.Equals(accountID)))
        {
            recursiveObjects.Add(new AllAccounts
            {
                AccountID = item.AccountID ,                
                Children = FillRecursive(flatObjects, item.AccountID)
            });
        }
        return recursiveObjects;
    }

enter code here