小编Ehs*_*udi的帖子

我尝试减去2个列表,如下面的代码,assignUsers有3个记录,assignedUsers并有2行.之后Except方法我仍然得到3行,但我应该得到1记录,因为两行中assignedUsers类似于assignUsers

 var users = accountApp.GetUsersByAccountId(context.GetUserData().AccountId);
 List<AssignUserViewModel> assignUsers = Mapper.Map<List<AssignUserViewModel>>(users).ToList();
 var mailUsers = mailApp.GetMailAssignedByMailId(id).Select(m => new { m.UserId, m.User.Name }).ToList();
 List<AssignUserViewModel> assignedUsers = mailUsers.Select(Mapper.DynamicMap<AssignUserViewModel>).ToList();
 assignUsers = assignUsers.Except(assignedUsers).ToList();

我有这些POCO课程:

public class  Task
    {
        public int TaskId { get; set; }
        public int ProjectId { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime? DueDate { get; set; }
        public int UserId { get; set; }
        public string Tags { get; set; }
        public string FileName { get; set; }
        public virtual Project Project { get; set; }
        public virtual List<TaskAssigned> TaskAssigns …

我只是写下面的代码,我希望在C#中有3个带异步功能的文本文件,但我没有看到任何内容:

  private async void Form1_Load(object sender, EventArgs e)
        {
            Task<int> file1 = test();
            Task<int> file2 = test();
            Task<int> file3 = test();
            int output1 = await file1;
            int output2 = await file2;
            int output3 = await file3;

        }

  async Task<int> test()
        {
            return await Task.Run(() =>
            {
                string content = "";
                for (int i = 0; i < 100000; i++)
                {
                    content += i.ToString();
                }
                System.IO.File.WriteAllText(string.Format(@"c:\test\{0}.txt", new Random().Next(1, 5000)), content);
                return 1;
            });
        }

我有这些课程:

public class Project
{
    public int ProjectId { get; set; }
    public int AccountId { get; set; }
    public int UserId { get; set; }
    public string Name { get; set; }
    public DateTime StartDate { get; set; }
    public string Description { get; set; }
    public string Tags { get; set; }
    public virtual List<Task> Tasks { get; set; }
}

public class Task
    {
        public int TaskId { get; set; }
        public int ProjectId { get; set; …

假设我们有一个包含156个项目的列表,我们需要在50个批次中使用take和skip方法,我已经完成了以下代码,但不知道如何跳过以前的项目,如果其余代码是正确的:

var mailAccounts = mailRepo.GetAllMailAccounts();
            int total = mailAccounts.Count;
            int batch = 50;
            int batchNumbers = total / batch;
            for (int i = 0; i < batchNumbers; i++)
            {
                mailAccounts.Skip(Previous Items).Take(batch);
                await FetchEmails(mailAccounts);
            }