done<3

ProjectLibrary/ProjectLibrary/Entities/Book.cs

@@ -1,6 +1,7 @@
 using ProjectLibrary.Entities.Enums;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -11,10 +12,13 @@ public class Book
 {
     public int Id { get; private set; }
 
+    [DisplayName("Название")]
     public string Title { get; private set; } = string.Empty;
 
+    [DisplayName("Жанр")]
     public BookTopic Topic { get; private set; }
 
+    [DisplayName("Вернули?")]
     public Boolean IsIssued { get; private set; }
 
     public static Book CreateEntity(int id, string title, BookTopic topic, Boolean isIssued)

ProjectLibrary/ProjectLibrary/Entities/BookIssue.cs

@@ -14,6 +14,8 @@ public class BookIssue
 
     public int BookId { get;private set; }
 
+    public string BookName { get; private set; } = string.Empty;
+
     public static BookIssue CreateElement(int id, string description, int bookId)
     {
         return new BookIssue

ProjectLibrary/ProjectLibrary/Entities/BookRestoration.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -9,11 +10,23 @@ namespace ProjectLibrary.Entities;
 public class BookRestoration
 {
     public int Id { get; private set; }
+
+    [Browsable(false)]
     public int LibrarianId { get; private set; }
+
+    [Browsable(false)]
     public int BookId { get; private set; }
 
+    [DisplayName("Книга")]
+    public string BookName {  get; private set; } = string.Empty;
+
+    [DisplayName("Сотрудник")]
+    public string LibrarianName { get; private set; } = string.Empty;
+
+    [DisplayName("Дата реставрации")]
     public DateTime RestorationDate { get; private set; }
 
+    [DisplayName("Описание")]
     public string Description { get; private set; } = string.Empty;
 
     public static BookRestoration CreateOperation(int id, int librarianId, int bookId, DateTime restorationDate, string description)

ProjectLibrary/ProjectLibrary/Entities/Issue.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,18 +11,35 @@ public class Issue
 {
     public int Id { get; private set; }
 
+    [DisplayName("Дата выпуска")]
     public DateTime IssueDate { get; private set; }
 
+    [DisplayName("Срок")]
     public DateTime DueDate { get; private set; }
 
+    [DisplayName("Дата возврата")]
     public DateTime ReturnDate { get; private set; }
 
+    [Browsable(false)]
     public int LibrarianId { get; private set;}
 
+    [DisplayName("Имя сотрудника")]
+    public string LibrarianName { get; private set; } = string.Empty;
+
+    [Browsable(false)]
     public int ReaderId { get; private set; }
 
+    [DisplayName("Имя клиента")]
+    public string ReaderName { get; private set; } = string.Empty;
+
+    [Browsable(false)]
     public IEnumerable<BookIssue> BookIssue { get; private set; } = [];
 
+    [DisplayName("Выданные книги")]
+    public string Books => BookIssue != null ?
+        string.Join(", ", BookIssue.Select(x => $"{x.BookName}")) :
+        string.Empty;
+
     public static Issue CreateOperation(int id, DateTime issueDate, DateTime dueDate, DateTime returnDate, int librarianId, int readerId, IEnumerable<BookIssue> bookIssue)
     {
         return new Issue
@@ -36,17 +54,11 @@ public class Issue
         };
     }
 
-    public static Issue CreateOperation(TempBookIssue tempBookIssue, IEnumerable<BookIssue> bookIssue)
+    public void SetBookIssue(IEnumerable<BookIssue> bookIssue)
     {
-        return new Issue
+        if (bookIssue != null && bookIssue.Any())
         {
-            Id = tempBookIssue.Id,
+            BookIssue = bookIssue;
-            IssueDate = tempBookIssue.IssueDate,
+        }
-            DueDate = tempBookIssue.DueDate,
-            ReturnDate = tempBookIssue.ReturnDate,
-            LibrarianId = tempBookIssue.LibrarianId,
-            ReaderId = tempBookIssue.ReaderId,
-            BookIssue = bookIssue
-        };
     }
 }

ProjectLibrary/ProjectLibrary/Entities/Librarian.cs

@@ -2,6 +2,7 @@
 using ProjectLibrary.Entities.Enums;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -12,8 +13,10 @@ public class Librarian
 {
     public int Id { get; private set; }
 
+    [DisplayName("Имя")]
     public string Name { get; private set; } = string.Empty;
 
+    [DisplayName("Тип")]
     public AllowedTopic AllowedTopic { get; private set; }
 
     public static Librarian CreateEntity(int id, string name, AllowedTopic allowedTopic)

ProjectLibrary/ProjectLibrary/Entities/Reader.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,10 +11,13 @@ public class Reader
 {
     public int Id { get; private set; }
 
+    [DisplayName("Имя")]
     public string Name { get; private set; } = string.Empty;
 
+    [DisplayName("Читательский билет")]
     public int LibraryCard {  get; private set; }
 
+    [DisplayName("До какого выдан")]
     public DateTime CardValidity { get; private set; }
 
     public static Reader CreateEntity(int id, string name, int libraryCard)

ProjectLibrary/ProjectLibrary/Entities/TempBookIssue.cs

@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace ProjectLibrary.Entities;
-
-public class TempBookIssue
-{
-    public int Id { get; private set; }
-
-    public DateTime IssueDate { get; private set; }
-
-    public DateTime DueDate { get; private set; }
-
-    public DateTime ReturnDate { get; private set; }
-
-    public int LibrarianId { get; private set; }
-
-    public int ReaderId { get; private set; }
-
-    public string Description { get; private set; } = string.Empty;
-
-    public int BookId { get; private set; }
-}

ProjectLibrary/ProjectLibrary/Forms/FormBookRestorations.cs

@@ -75,7 +75,11 @@ namespace ProjectLibrary.Forms
                 MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
         }
-        private void LoadList() => dataGridView.DataSource = _bookRestorationRepository.ReadBookRestorations();
+        private void LoadList()
+        {
+            dataGridView.DataSource = _bookRestorationRepository.ReadBookRestorations();
+            dataGridView.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
             id = 0;

ProjectLibrary/ProjectLibrary/Forms/FormBooks.cs

@@ -97,7 +97,11 @@ namespace ProjectLibrary.Forms
             }
         }
 
-        private void LoadList() => dataGridView.DataSource = _bookRepository.ReadBooks();
+        private void LoadList()
+        {
+            dataGridView.DataSource = _bookRepository.ReadBooks();
+            dataGridView.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
             id = 0;

ProjectLibrary/ProjectLibrary/Forms/FormIssues.cs

@@ -76,8 +76,11 @@ namespace ProjectLibrary.Forms
             }
 
         }
-        private void LoadList() => dataGridView.DataSource = _issueRepository.ReadIssue();
+        private void LoadList()
-
+        {
+            dataGridView.DataSource = _issueRepository.ReadIssue();
+            dataGridView.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
             id = 0;

ProjectLibrary/ProjectLibrary/Forms/FormLibrarians.cs

@@ -94,8 +94,11 @@ namespace ProjectLibrary.Forms
             }
         }
 
-        private void LoadList() => dataGridView.DataSource = _librarianRepository.ReadLibrarians();
+        private void LoadList()
-
+        {
+            dataGridView.DataSource = _librarianRepository.ReadLibrarians();
+            dataGridView.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
             id = 0;

ProjectLibrary/ProjectLibrary/Forms/FormReaders.cs

@@ -94,7 +94,11 @@ namespace ProjectLibrary.Forms
                 MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
         }
-        private void LoadList() => dataGridView.DataSource = _readerRepository.ReadReaders();
+        private void LoadList()
+        {
+            dataGridView.DataSource = _readerRepository.ReadReaders();
+            dataGridView.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
             id = 0;

ProjectLibrary/ProjectLibrary/Reports/ChartReport.cs

@@ -35,8 +35,7 @@ internal class ChartReport
     private List<(string Caption, double Value)> GetData(DateTime dateTime)
     {
         var issueCount = _issueRepository
-            .ReadIssue()
+            .ReadIssue(dateFrom: dateTime.Date, dateTo: dateTime.Date.AddDays(1))
-            .Where(x => x.IssueDate.Date == dateTime.Date)
             .SelectMany(x => x.BookIssue)
             .Count();
 

ProjectLibrary/ProjectLibrary/Reports/TableReport.cs

@@ -53,9 +53,7 @@ internal class TableReport
 
         var librarianId = librarian.Id;
 
-        var issueData = _issueRepository.ReadIssue()
+        var issueData = _issueRepository.ReadIssue(librarianId, startDate, endDate)
-            .Where(issue => issue.IssueDate >= startDate && issue.IssueDate <= endDate)
-            .Where(issue => issue.LibrarianId == librarianId)
             .SelectMany(issue => issue.BookIssue, (issue, bookIssue) => new
             {
                 Librarian = librarian.Name,
@@ -65,9 +63,7 @@ internal class TableReport
             });
 
 
-        var restorationData = _bookRestorationRepository.ReadBookRestorations()
+        var restorationData = _bookRestorationRepository.ReadBookRestorations(librarianId, startDate, endDate)
-            .Where(restoration => restoration.RestorationDate >= startDate && restoration.RestorationDate <= endDate)
-            .Where(restoration => restoration.LibrarianId == librarianId)
             .GroupBy(restoration => new
             {
                 restoration.RestorationDate,

ProjectLibrary/ProjectLibrary/Repositories/IBookRestorationRepository.cs

@@ -9,7 +9,7 @@ namespace ProjectLibrary.Repositories;
 
 public interface IBookRestorationRepository
 {
-    IEnumerable<BookRestoration> ReadBookRestorations(int? id = null, int? librarianId = null, int? bookId=null, string? description = null, DateTime? dateFrom = null, DateTime? dateTo = null);
+    IEnumerable<BookRestoration> ReadBookRestorations(int? librarianId = null, DateTime? dateFrom = null, DateTime? dateTo = null);
 
     void CreateBookRestoration(BookRestoration bookRestoration);
 

ProjectLibrary/ProjectLibrary/Repositories/IIssueRepository.cs

@@ -9,7 +9,7 @@ namespace ProjectLibrary.Repositories;
 
 public interface IIssueRepository
 {
-    IEnumerable<Issue> ReadIssue(int? id=null, int? librarianId = null, int? readerId = null, DateTime? dateFrom = null, DateTime? dateTo = null);
+    IEnumerable<Issue> ReadIssue(int? librarianId = null, DateTime? dateFrom = null, DateTime? dateTo = null);
 
     void CreateIssue(Issue issue);
 

ProjectLibrary/ProjectLibrary/Repositories/Implementations/BookRestorationRepository.cs

@@ -66,16 +66,32 @@ public class BookRestorationRepository : IBookRestorationRepository
         }
     }
 
-    public IEnumerable<BookRestoration> ReadBookRestorations(int? id, int? librarianId, int? bookId, string? description, DateTime? dateFrom = null, DateTime? dateTo = null)
+    public IEnumerable<BookRestoration> ReadBookRestorations(int? librarianId, DateTime? dateFrom = null, DateTime? dateTo = null)
     {
         _logger.LogInformation("Получение всех объектов");
         try
         {
+            var builder = new QueryBuilder();
+            if (dateFrom.HasValue)
+            {
+                builder.AddCondition("bor.RestorationDate >= @dateFrom");
+            }
+            if (dateTo.HasValue)
+            {
+                builder.AddCondition("bor.RestorationDate <= @dateTo");
+            }
+            if (librarianId.HasValue)
+            {
+                builder.AddCondition("bor.librarianId = @librarianId");
+            }
             using var connection = new
             NpgsqlConnection(_connectionString.ConnectionString);
-            var querySelect = "SELECT * FROM BookRestoration";
+            var querySelect = @$"SELECT bor.*, boo.Title as BookName, lib.Name as LibrarianName FROM BookRestoration bor
+                                 LEFT JOIN Book boo on boo.Id = bor.BookId
+                                 LEFT JOIN Librarian lib on lib.Id = bor.LibrarianId
+                                 {builder.Build()}";
             var bookRestoration =
-            connection.Query<BookRestoration>(querySelect);
+            connection.Query<BookRestoration>(querySelect, new {dateFrom, dateTo, librarianId});
             _logger.LogDebug("Полученные объекты: {json}",
             JsonConvert.SerializeObject(bookRestoration));
             return bookRestoration;

ProjectLibrary/ProjectLibrary/Repositories/Implementations/IssueRepository.cs

@@ -89,22 +89,61 @@ public class IssueRepository : IIssueRepository
         }
     }
 
-    public IEnumerable<Issue> ReadIssue(int? id, int? librarianId, int? readerId, DateTime? dateFrom = null, DateTime? dateTo = null)
+    public IEnumerable<Issue> ReadIssue(int? librarianId, DateTime? dateFrom = null, DateTime? dateTo = null)
     {
         _logger.LogInformation("Получение всех объектов");
         try
         {
+            var builder = new QueryBuilder();
+            if (dateFrom.HasValue)
+            {
+                builder.AddCondition("iss.IssueDate >= @dateFrom");
+            }
+            if (dateTo.HasValue)
+            {
+                builder.AddCondition("iss.IssueDate <= @dateTo");
+            }
+            if (librarianId.HasValue)
+            {
+                builder.AddCondition("iss.librarianId = @librarianId");
+            }
             using var connection = new
             NpgsqlConnection(_connectionString.ConnectionString);
             var querySelect = @"SELECT 
-                                    iss.*, biss.Description, biss.BookId 
+                                    iss.*,
+                                    lib.Name as LibrarianName,
+                                    rea.Name as ReaderName,
+                                    biss.Description, 
+                                    biss.BookId,
+                                    bo.Title as BookName
                                 FROM Issue iss
-                                INNER JOIN Book_Issue biss on biss.IssueId = iss.Id";
+                                LEFT JOIN Librarian lib on lib.Id = iss.LibrarianId
-            var issue =
+                                LEFT JOIN Reader rea on rea.Id = iss.ReaderId
-            connection.Query<TempBookIssue>(querySelect);
+                                INNER JOIN Book_Issue biss on biss.IssueId = iss.Id
+                                LEFT JOIN Book bo on bo.Id = biss.BookId";
+            var issuesDict = new Dictionary<int, List<BookIssue>>();
+
+            var bookIssues = connection.Query<Issue, BookIssue, Issue>(querySelect,
+                (issue, bookIssue) =>
+                {
+                    if (!issuesDict.TryGetValue(issue.Id, out var ccf))
+                    {
+                        ccf = [];
+                        issuesDict.Add(issue.Id, ccf);
+                    }
+
+                    ccf.Add(bookIssue);
+                    return issue;
+                }, splitOn: "BookId", param: new { dateFrom, dateTo, librarianId });
             _logger.LogDebug("Полученные объекты: {json}",
-            JsonConvert.SerializeObject(issue));
+            JsonConvert.SerializeObject(bookIssues));
-            return issue.GroupBy(x => x.Id, y => y, (key, value) => Issue.CreateOperation(value.First(), value.Select(z => BookIssue.CreateElement(0, z.Description, z.BookId)))).ToList();
+
+            return issuesDict.Select(x =>
+            {
+                var cf = bookIssues.First(y => y.Id == x.Key);
+                cf.SetBookIssue(x.Value);
+                return cf;
+            }).ToArray();
         }
         catch (Exception ex)
         {

ProjectLibrary/ProjectLibrary/Repositories/Implementations/QueryBuilder.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectLibrary.Repositories.Implementations;
+
+internal class QueryBuilder
+{
+    private readonly StringBuilder _builder;
+    public QueryBuilder()
+    {
+        _builder = new();
+    }
+    public QueryBuilder AddCondition(string condition)
+    {
+        if (_builder.Length > 0)
+        {
+            _builder.Append(" AND ");
+        }
+        _builder.Append(condition);
+        return this;
+    }
+    public string Build()
+    {
+        if (_builder.Length == 0)
+        {
+            return string.Empty;
+        }
+        return $"WHERE {_builder}";
+    }
+}
+

ProjectLibrary/ProjectLibrary/library_log20241225.txt

@@ -0,0 +1,51 @@
+2024-12-25 19:09:51.773 +04:00 [INF] Получение всех объектов
+2024-12-25 19:09:52.186 +04:00 [ERR] Ошибка при чтении объектов
+Npgsql.PostgresException (0x80004005): 28P01: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> "postgres" <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
+   at Npgsql.Internal.NpgsqlConnector.ReadMessageLong(Boolean async, DataRowLoadingMode dataRowLoadingMode, Boolean readingNotifications, Boolean isReadingPrependedMessage)
+   at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
+   at Npgsql.Internal.NpgsqlConnector.AuthenticateSASL(List`1 mechanisms, String username, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.Authenticate(String username, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.<Open>g__OpenCore|214_1(NpgsqlConnector conn, SslMode sslMode, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.Open(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.PoolingDataSource.OpenNewConnector(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.PoolingDataSource.<Get>g__RentAsync|33_0(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.NpgsqlConnection.<Open>g__OpenAsync|42_0(Boolean async, CancellationToken cancellationToken)
+   at Npgsql.NpgsqlConnection.Open()
+   at Dapper.SqlMapper.MultiMapImpl[TFirst,TSecond,TThird,TFourth,TFifth,TSixth,TSeventh,TReturn](IDbConnection cnn, CommandDefinition command, Delegate map, String splitOn, DbDataReader reader, Identity identity, Boolean finalize)+MoveNext() in /_/Dapper/SqlMapper.cs:line 1566
+   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
+   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
+   at Dapper.SqlMapper.MultiMap[TFirst,TSecond,TThird,TFourth,TFifth,TSixth,TSeventh,TReturn](IDbConnection cnn, String sql, Delegate map, Object param, IDbTransaction transaction, Boolean buffered, String splitOn, Nullable`1 commandTimeout, Nullable`1 commandType) in /_/Dapper/SqlMapper.cs:line 1548
+   at Dapper.SqlMapper.Query[TFirst,TSecond,TReturn](IDbConnection cnn, String sql, Func`3 map, Object param, IDbTransaction transaction, Boolean buffered, String splitOn, Nullable`1 commandTimeout, Nullable`1 commandType) in /_/Dapper/SqlMapper.cs:line 1397
+   at ProjectLibrary.Repositories.Implementations.IssueRepository.ReadIssue(Nullable`1 librarianId, Nullable`1 dateFrom, Nullable`1 dateTo) in F:\OTP2\ProjectLibrary\ProjectLibrary\Repositories\Implementations\IssueRepository.cs:line 126
+  Exception data:
+    Severity: <20><><EFBFBD><EFBFBD><EFBFBD>
+    SqlState: 28P01
+    MessageText: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> "postgres" <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
+    File: auth.c
+    Line: 324
+    Routine: auth_failed
+2024-12-25 19:09:55.412 +04:00 [INF] Получение всех объектов
+2024-12-25 19:09:55.437 +04:00 [ERR] Ошибка при чтении объектов
+Npgsql.PostgresException (0x80004005): 28P01: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> "postgres" <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
+   at Npgsql.Internal.NpgsqlConnector.ReadMessageLong(Boolean async, DataRowLoadingMode dataRowLoadingMode, Boolean readingNotifications, Boolean isReadingPrependedMessage)
+   at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
+   at Npgsql.Internal.NpgsqlConnector.AuthenticateSASL(List`1 mechanisms, String username, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.Authenticate(String username, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.<Open>g__OpenCore|214_1(NpgsqlConnector conn, SslMode sslMode, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.Internal.NpgsqlConnector.Open(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.PoolingDataSource.OpenNewConnector(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.PoolingDataSource.<Get>g__RentAsync|33_0(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
+   at Npgsql.NpgsqlConnection.<Open>g__OpenAsync|42_0(Boolean async, CancellationToken cancellationToken)
+   at Npgsql.NpgsqlConnection.Open()
+   at Dapper.SqlMapper.QueryImpl[T](IDbConnection cnn, CommandDefinition command, Type effectiveType)+MoveNext() in /_/Dapper/SqlMapper.cs:line 1183
+   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
+   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
+   at Dapper.SqlMapper.Query[T](IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Boolean buffered, Nullable`1 commandTimeout, Nullable`1 commandType) in /_/Dapper/SqlMapper.cs:line 815
+   at ProjectLibrary.Repositories.Implementations.LibrarianRepository.ReadLibrarians() in F:\OTP2\ProjectLibrary\ProjectLibrary\Repositories\Implementations\LibrarianRepository.cs:line 101
+  Exception data:
+    Severity: <20><><EFBFBD><EFBFBD><EFBFBD>
+    SqlState: 28P01
+    MessageText: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> "postgres" <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
+    File: auth.c
+    Line: 324
+    Routine: auth_failed