Diplom_B/DB/WorkDB.cs

using Microsoft.EntityFrameworkCore.Metadata.Internal;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Diplom_B.DB
{
	public static class WorkDB
	{
		public static void Init()
		{
			using (var DB = new MainDB())
			{
				{
					var usr = (from u in DB.Users
										 where u.Name == "admin"
										 select u).ToArray();
					if (usr.Length < 1)
					{
						DB.Users.Add(new DB.User()
						{
							Name = "admin",
							Pass = "admin",
							Dog = 3,
							Doc = 3,
							Izv = 3,
							Post = 3,
							Izd = 3,
							Zak = 3,
							Set = 3,
							Default = 6
						});
					}
				}
				{
					var stat = (from u in DB.Statusy
											select u).ToArray();
					if (stat.Length < 1)
					{
						DB.Statusy.Add(new Status() {Stat = "Без статуса." });
					}
				}

				DB.SaveChanges();
			}
		}

		public static Document GetDocument(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Documenty
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Dogovor GetDogovor(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Dogovory
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Izdelie GetIzdelie(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Izdeliya
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Izveschenie GetIzveschenie(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Izvescheniya
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Platej GetPlatej(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var platej = (from a in db.Platejy
												where a.Id == id
												select a).ToArray();
					if (platej.Length != 1)
						return null;
					else
						return platej[0];
				}
			}
			catch { throw; }

		}
		public static Postavka GetPostavka(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Postavki
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Status GetStatus(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Statusy
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static User GetUser(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Users
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}
		public static Zakazchik GetZakazchik(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.Zakazchiki
										 where a.Id == id
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}

		public static DogIzd GetDogIzd(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var dogIzd = (from a in db.DogIzds
												where a.Id == id
												select a).ToArray();
					if (dogIzd.Length != 1)
						return null;
					else
						return dogIzd[0];
				}
			}
			catch { throw; }
		}
		public static DogIzd GetDogIzd(int dogId, int izdId)
		{
			try
			{
				using (var db = new MainDB())
				{
					var dogIzd = (from a in db.DogIzds
												where a.DogovorId == dogId && a.IzdelieId == izdId
												select a).ToArray();
					if (dogIzd.Length != 1)
						return null;
					else
						return dogIzd[0];
				}
			}
			catch { throw; }
		}
		public static DocIzv GetDocIzv(int docId, int izvId)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.DocIzvs
										 where
											 a.DocumentId == docId &&
											 a.IzveschenieId == izvId
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }

		}
		public static DogDoc GetDogDoc(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var dogDoc = (from a in db.DogDocs
												where a.Id == id
												select a).ToArray();
					if (dogDoc.Length != 1)
						return null;
					else
						return dogDoc[0];
				}
			}
			catch { throw; }

		}
		public static DogDoc GetDogDoc(int dogId, int docId)
		{
			try
			{
				using (var db = new MainDB())
				{
					var res = (from a in db.DogDocs
										 where
											 a.DogovorId == dogId &&
											 a.DocumentId == docId
										 select a).ToArray();
					if (res.Length != 1)
						return null;
					else
						return res[0];
				}
			}
			catch { throw; }
		}

		public static Dogovor[] ListDogovor(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Dogovory
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Dogovory
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.DogNum.ToLower().Contains(f) ||
												 a.DataPostavky.ToString("yyyy.MM.dd").Contains(f) ||
												 a.PrikazZapusk.ToLower().Contains(f) ||
												 a.Garantiy.ToLower().Contains(f) ||
												 a.Primechanie.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }
		}
		public static void AddDogovor(Dogovor dog)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Dogovory.Add(dog);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeDogovor(Dogovor dog)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Dogovory.Update(dog);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteDogovor(Dogovor dog)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Dogovory.Remove(dog);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}


		public static User[] ListUser(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Users
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Users
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.Name.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }
		}
		public static void AddUser(User usr)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Users.Add(usr);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeUser(User usr)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Users.Update(usr);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteUser(User usr)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Users.Remove(usr);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static string[] GetUserList()
		{
			try
			{
				using (var db = new MainDB())
				{
					var usrName = (from a in db.Users
												 select a.Name).ToArray();
					return usrName;
				}
			}
			catch { throw; }
		}

		public static Izdelie[] ListIzdelie(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Izdeliya
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Izdeliya
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.Name.ToLower().Contains(f) ||
												 a.DecNum.ToLower().Contains(f) ||
												 a.Shifr.ToLower().Contains(f) ||
												 a.Litera.ToLower().Contains(f) ||
												 a.Cena.ToString("F2").ToLower().Contains(f) ||
												 a.OtdelRazrab.ToString().ToLower().Contains(f) ||
												 a.Ved.ToLower().Contains(f) ||
												 a.GlavKonstr.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }
		}
		public static void AddIzdelie(Izdelie izd)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izdeliya.Add(izd);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeIzdelie(Izdelie izd)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izdeliya.Update(izd);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteIzdelie(Izdelie izd)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izdeliya.Remove(izd);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static Dogovor[] GetDogovoryFromIzdeliya(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var post = (from a in db.DogIzds
											where a.IzdelieId == id
											select a.Dogovor).ToList();
					for (var i = 0; i < post.Count; i++)
						while ((post.FindAll(x => x.Id == post[i].Id).Count > 1))
							post.RemoveAt(i);
					return post.ToArray();
				}
			}
			catch { throw; }
		}

		public static Izveschenie[] ListIzveschenie(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Izvescheniya
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Izvescheniya
											 where
											   a.Id.ToString().ToLower().Contains(f) ||
												 a.IzvNum.ToLower().Contains(f) ||
												 a.InvNum.ToString().ToLower().Contains(f) ||
												 a.IzmNum.ToString().ToLower().Contains(f) ||
												 a.UkazZad.ToLower().Contains(f) ||
												 a.UkazVnedr.ToLower().Contains(f) ||
												 a.FileName.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }

		}
		public static void AddIzveschenie(Izveschenie izv)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izvescheniya.Add(izv);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeIzveschenie(Izveschenie izv)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izvescheniya.Update(izv);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteIzveschenie(Izveschenie izv)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Izvescheniya.Remove(izv);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static Document[] GetDocumentyFromIzvechenie(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var doc = (from a1 in db.Documenty 
										 join a2 in db.DocIzvs on a1.Id equals a2.DocumentId
										 where a2.IzveschenieId == id
										 select a1).ToArray();
					return doc;
				}
			}
			catch { throw; }

		}

		public static Zakazchik[] ListZakazchik(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Zakazchiki
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Zakazchiki
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.Name.ToLower().Contains(f) ||
												 a.Adress.ToLower().Contains(f) ||
												 a.Phone.ToLower().Contains(f) ||
												 a.Email.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }

		}
		public static void AddZakazchik(Zakazchik zak)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Zakazchiki.Add(zak);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeZakazchik(Zakazchik zak)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Zakazchiki.Update(zak);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteZakazchik(Zakazchik zak)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Zakazchiki.Remove(zak);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static string[] GetZakazchikList()
		{
			try
			{
				using (var db = new MainDB())
				{
					var usrName = (from a in db.Zakazchiki
												 select a.Name).ToArray();
					return usrName;
				}
			}
			catch { throw; }
		}
		public static Dogovor[] GetDogovoryFromZakazchik(int id)
    {
			try
			{
				using (var db = new MainDB())
				{
					var dog = (from a in db.Dogovory
											where a.ZakazchikId == id
											select a).ToArray();
					return dog;
				}
			}
			catch { throw; }
		}

		public static Status[] ListStatus()
		{
			try
			{
				using (var db = new MainDB())
				{
					var tmp = (from a in db.Statusy
										 select a).ToArray();
					return tmp;
				}
			}
			catch { throw; }
		}
		public static void AddStatus(Status stat)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Statusy.Add(stat);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeStatus(Status stat)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Statusy.Update(stat);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteStatus(Status stat)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Statusy.Remove(stat);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static string[] GetStatusList()
		{
			try
			{
				using (var db = new MainDB())
				{
					var tmp = (from a in db.Statusy
										 select a.Stat).ToArray();
					return tmp;
				}
			}
			catch { throw; }
		}
		public static int? GetIdStatus(string name)
		{
			try
			{
				using (var db = new MainDB())
				{
					var tmp = (from a in db.Statusy
										 where a.Stat == name
										 select a.Id).ToArray();
					if (tmp.Length == 1)
						return tmp[0];
					else
						return null;
				}
			}
			catch { throw; }
		}

		public static Postavka[] ListPostavka(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Postavki
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Postavki
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.ZavNum.ToLower().Contains(f) ||
												 a.DataPostavki.ToString("yyyy.MM.dd").ToLower().Contains(f) ||
												 a.Status.Stat.ToString().ToLower().Contains(f) ||
												 a.Primechanie.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }
		}
		public static void AddPostavka(Postavka post)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Postavki.Add(post);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangePostavka(Postavka post)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Postavki.Update(post);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeletePostavka(Postavka post)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Postavki.Remove(post);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}

		public static string[] GetPostavkiZavNum()
    {
			try
			{
				using (var db = new MainDB())
				{
					var post = (from a in db.Postavki
											select a.ZavNum).ToArray();
					return post;
				}
			}
			catch { throw; }
		}
		public static Postavka[] GetPostavkyFromIzdeliya(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var post = (from a in db.Postavki
											where a.IzdelieId == id
											select a).ToArray();
					return post;
				}
			}
			catch { throw; }
		}
		public static Postavka[] GetPostavkyFromStatus(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var post = (from a in db.Postavki
											where a.StatusId == id
											select a).ToArray();
					return post;
				}
			}
			catch { throw; }
		}
		public static Postavka[] GetPostavkyFromDogovor(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var post = (from a in db.Postavki
											where a.DogovorId == id
											select a).ToArray();
					return post;
				}
			}
			catch { throw; }
		}

		public static Document[] ListDocumenty(string filter = "")
		{
			var f = filter.ToLower();
			try
			{
				using (var db = new MainDB())
				{
					if (string.IsNullOrEmpty(filter))
					{
						var tmp = (from a in db.Documenty
											 select a).ToArray();
						return tmp;
					}
					else
					{
						var tmp = (from a in db.Documenty
											 where
												 a.Id.ToString().ToLower().Contains(f) ||
												 a.InvNum.ToLower().Contains(f) ||
												 a.DecNum.ToLower().Contains(f) ||
												 a.Name.ToLower().Contains(f) ||
												 a.FileName.ToLower().Contains(f) ||
												 a.Primechanie.ToLower().Contains(f)
											 select a).ToArray();
						return tmp;
					}
				}
			}
			catch { throw; }

		}
		public static void AddDocument(Document doc)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Documenty.Add(doc);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeDocument(Document doc)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Documenty.Update(doc);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteDocument(Document doc)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Documenty.Remove(doc);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static Izveschenie[] GetIzvechenieFromDocumenty(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var izv = (from a1 in db.Izvescheniya
										 join a2 in db.DocIzvs on a1.Id equals a2.IzveschenieId
										 where a2.DocumentId == id
										 select a1).ToArray();
					return izv;
				}
			}
			catch { throw; }
		}
		public static Dogovor[] GetDogovorFromDocumenty(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var dog = (from a1 in db.Dogovory
										 join a2 in db.DogDocs on a1.Id equals a2.DogovorId
										 where a2.DocumentId == id
										 select a1).ToArray();
					return dog;
				}
			}
			catch { throw; }
		}

		public static (Izdelie izd, DogIzd dogIzd)[] GetIzdelieDogIzdFromDogovor(int id)
    {
			try
			{
				using (var db = new MainDB())
				{
					var izd = (from a1 in db.DogIzds
										 join a2 in db.Izdeliya on a1.IzdelieId equals a2.Id
										 where a1.DogovorId == id
										 orderby a1.Id
										 select a2).ToArray();
					var di = (from a1 in db.DogIzds
										 join a2 in db.Izdeliya on a1.IzdelieId equals a2.Id
										 where a1.DogovorId == id
										 orderby a1.Id
										 select a1).ToArray();
					if (izd.Length != di.Length) return null;
					var izdDi = new List<(Izdelie izd, DogIzd dogIzd)>();
					for (var i = 0; i < izd.Length; i++)
						izdDi.Add((izd[i], di[i]));
					return izdDi.ToArray();
				}
			}
			catch { throw; }
		}
		public static Izdelie GetIzdelieFromDogIzd(int id)
    {
			try
			{
				using (var db = new MainDB())
				{
					var izd = (from a1 in db.DogIzds
										 join a2 in db.Izdeliya on a1.IzdelieId equals a2.Id
										 where a1.Id == id
										 select a2).ToArray();
					if (izd.Length != 1)
						return null;
					else
						return izd[0];
				}
			}
			catch { throw; }
		}

		public static (Document doc, DogDoc dogDoc)[] GetDocumentyDogDocFromDogovor(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var doc = (from a1 in db.DogDocs
										 join a2 in db.Documenty on a1.DocumentId equals a2.Id
										 where a1.DogovorId == id
										 orderby a1.Id
										 select a2).ToArray();
					var dd = (from a1 in db.DogDocs
										join a2 in db.Documenty on a1.DocumentId equals a2.Id
										where a1.DogovorId == id
										orderby a1.Id
										select a1).ToArray();
					if (doc.Length != dd.Length) return null;
					var docDd = new List<(Document doc, DogDoc dogDoc)>();
					for (var i = 0; i < doc.Length; i++)
						docDd.Add((doc[i], dd[i]));
					return docDd.ToArray();
				}
			}
			catch { throw; }
		}
		public static Document GetDocumentFromDogDoc(int id)
		{
			try
			{
				using (var db = new MainDB())
				{
					var doc = (from a1 in db.DogDocs
										 join a2 in db.Documenty on a1.DocumentId equals a2.Id
										 where a1.Id == id
										 select a2).ToArray();
					if (doc.Length != 1)
						return null;
					else
						return doc[0];
				}
			}
			catch { throw; }
		}

		public static void AddPlatej(Platej pl)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Platejy.Add(pl);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangePlatej(Platej pl)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Platejy.Update(pl);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeletePlatej(Platej pl)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.Platejy.Remove(pl);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static Platej[] GetPlatejyFromDogovor(int id)
    {
			try
			{
				using (var db = new MainDB())
				{
					var pl = (from a in db.Platejy
										where a.DogovorId == id
										select a).ToArray();
					return pl;
				}
			}
			catch { throw; }
		}

		public static void AddDogIzd(DogIzd di)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DogIzds.Add(di);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void ChangeDogIzd(DogIzd di)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DogIzds.Update(di);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteDogIzd(DogIzd di)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DogIzds.Remove(di);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}


		public static void AddDocIzv (DocIzv di)
    {
			try
			{
				using (var db = new MainDB())
				{
					db.DocIzvs.Add(di);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteDocIzv(DocIzv di)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DocIzvs.Remove(di);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}

		public static void AddDogDoc(DogDoc dd)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DogDocs.Add(dd);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}
		public static void DeleteDogDoc(DogDoc dd)
		{
			try
			{
				using (var db = new MainDB())
				{
					db.DogDocs.Remove(dd);
					db.SaveChanges();
				}
			}
			catch { throw; }
		}

	}
}