Overview

The software complex "Electronic Problem Book on LINQ Technologies Programming Taskbook for LINQ" (PT for LINQ) contains additional components of the electronic problem book Programming Taskbook that allow performing tasks related to the LINQ technology of the .NET platform.

To use this complex, it should be installed in the system directory of the base version of the electronic problem book Programming Taskbook version 4.11 or higher (usually the system directory of the problem book is C:\Program Files\PT4). Version 1.2 of PT for LINQ is intended for use with the base version of the electronic problem book Programming Taskbook version 4.15 or higher.

Version 1.3 of PT for LINQ additionally contains 64-bit versions of libraries with task groups, which allows it to be used for 64-bit programming environments (provided the base version of Programming Taskbook is version 4.21 or higher). Furthermore, it added the ability to select the interface language for the installer. Another feature of version 1.3 is that in its tasks, the initial file data contains only characters from the ASCII set, which allows performing tasks without considering the specifics of different encodings.

Version 1.4 added full English interface support: when performing tasks, you can use task descriptions in either Russian or English.

The PT for LINQ complex is a freely distributed software product (freeware); it can be used both with the full version PT4Complete and with the freely distributed mini-version PT4Mini.

The PT for LINQ problem book includes the groups LinqBegin (60 tasks introducing LINQ queries), LinqObj (100 tasks on using the LINQ to Objects interface for processing sequences and sets of interrelated sequences) and LinqXml (90 tasks on using the LINQ to XML interface for processing XML documents).

The LinqBegin group contains the following subgroups (the number of tasks in the subgroup is indicated in parentheses):

Element-wise Operations, Aggregation, and Sequence Generation (15),
Filtering, Sorting, Set-Theoretic Operations (16),
Projection (12),
Joining and Grouping (17).

The LinqObj group contains the following subgroups:

Processing Single Sequences (70),
Processing Multiple Related Sequences (30).

The LinqXml group contains the following subgroups:

Creating XML Documents (10),
Analyzing XML Documents (10),
Transforming XML Documents (20),
Type Conversion When Processing XML Documents (12),
Working with XML Document Namespaces (8),
Additional Tasks for Processing XML Documents (30).

Tasks can be performed in C#, Visual Basic .NET, and F# in environments supported by the base version of Programming Taskbook. For version 4.26 of the base version, these are Visual Studio 2017–2026 (languages C#, Visual Basic .NET, and F#), Visual Studio Code (language C#), SharpDevelop (languages C# and F#). Furthermore, the Programming Taskbook for LINQ is integrated into the PascalABC.NET system version 3.0 and higher.

Winner Diploma (VII International Conference-Competition Innovative Information and Pedagogical Technologies in the System of IT Education

The PT for LINQ problem book provides the same capabilities when performing tasks as the base Programming Taskbook; in particular, it provides the student's program with initial data, checks the correctness of the results obtained by the program, and saves information about each test run of the program in a special file. Besides, PT for LINQ provides additional features that simplify working with sequences:

methods GetEnumerableInt and GetEnumerableString, providing input of numeric and string sequences respectively (available in tasks of the LinqBegin group);
the extension method Put, which can be applied to sequences to output all their elements (available in tasks of the LinqBegin group);
the extension method Show, which can be applied to sequences for debug output of all their elements in a special section of the problem book window (available for all groups included in PT for LINQ; this method can be included directly in the chain of LINQ methods used to solve the given problem).

The software complex "Electronic Problem Book on LINQ Technologies Programming Taskbook for LINQ" was registered in the Register of Computer Programs on March 19, 2014 (certificate of state registration of the computer program number 2014613173).

The work "Electronic Problem Book on LINQ Technology of the .NET Framework Platform" was among the winners of the VII International Conference-Competition "Innovative Information and Pedagogical Technologies in the System of IT Education" in the nomination "Information and Pedagogical Technologies in IT Education".

Last revised:
01.01.2026