LINQ from Basics to Advanced + Practice Tests

Explore Linq architecture and language integrated query, focusing on providers, data sources, and executing queries against objects, datasets, and xml through three stages: obtain, create, execute.

Explore LINQ from basic to advanced syntax, mastering query syntax and lambda expressions, with from, in, where, select, order by, projection, grouping, and let for deferred execution.

Master lambda expressions to frame linq queries with extension methods and predicates. Explore where, select, order by, group by, skip, paging, and aggregate operations, plus union, intersect, and except.

Explore linq queries over custom collections by building a student class, creating a student list, and applying filtering, sorting, grouping, and projection with lambda expressions.

Use Visual Studio's designer to generate data model classes and a data context that map to database tables via Linq to SQL, enabling object-relational modeling and strongly typed queries.

Master performing CRUD operations with LINQ to SQL. Build department and employee tables, bind a data context to a grid view, and manage insert, update, and delete using SubmitChanges.

Learn to perform CRUD operations on a dependent table by joining employee data with department data in linq, and display department names in a grid using a winforms dialog.

Explore delay loading in LINQ from basic to advanced, enabling on demand retrieval of specific entity properties like salary or images to optimize performance with practical demonstrations.

Handle concurrency by showing how two users updating disconnected data can trigger change conflicts and how to resolve them with refreshing current and original values and always or never rules.

Explore how to execute stored procedures from a .NET project, pass parameters, map results to employee and department entities, and handle multiple result sets.

Demonstrates performing insert, update, and delete via stored procedures, including binding parameters, mapping to front-end properties, and using a single action-based procedure to manage all CRUD operations.

Explore how Linq automatically handles transactions via the data context, with commit or rollback, and use TransactionScope to atomically add a department and its employees when salary > 5000.

Learn to query datasets with LINQ by using DataTable extensions to filter, project, and bind results to grids or controls.

Read data from an xml document with linq to xml by querying employee elements and their name and salary attributes, then create, modify, and save documents with XDocument and XElement.

Explore binary trees from definitions to representations and traversals, including root, parent and child relationships, left and right subtrees, and complete, full, and strict tree concepts, with complete source code.