簡單C#遞迴（向前查詢上工序）

胖头孙發表於2024-09-19
C#遞迴

/// <summary>
/// 遞迴查詢前工序，直到找到沒有跳序的前工序
/// </summary>
/// <param name="process"></param>
/// <returns></returns>
private async Task<List<string>> HasReportedWorkAsync(List<WorkOrderProcedureEntity> proceduList)
{
    if (proceduList.Count <= 0) return new List<string>();

    //前工序ID
    var pId = proceduList.Select(x => x.PreNid).ToList();

    //查詢前工序任務
    var preWOProList = await BaseDal.Db.Queryable<WorkOrderProcedureEntity>().Where(p => p.WorkorderId == proceduList[0].WorkorderId && p.IsDelete == 0 && pId.Contains(p.OperationNo)).ToListAsync();

    if (preWOProList.Count <= 0) return new List<string>();

    //查詢未跳序的工序
    var isFlagSkip = preWOProList.Where(x => x.SkipOperation == 0).ToList();

    //沒有未跳序並且有前序時
    if (isFlagSkip.Count <= 0 && preWOProList.Count > 0)
    {
        //沒有未跳序的工序，則繼續往上工序找
        return await HasReportedWorkAsync(preWOProList);
    }
    else
    {
        //存在沒有跳序的工序，則直接返回
        return preWOProList.Select(x => x.Nid).ToList();
    }
}

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