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Practical tutorials for ASP.NET, modern .NET and ASP.NET Core, C#, Python, Node.js, React and Oracle. Explore code examples, follow a learning path, or find a fix for your next development task.
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Power BI
Import data, clean it, build visuals, use DAX and design interactive dashboards.
Start Power BI course →.NET Core / ASP.NET Core
A six-lesson student course: C#, APIs, middleware, services, configuration and CRUD.
Start the student learning path →ASP.NET
Page lifecycle, server controls, validation and application state.
View tutorial guide →C#
Language basics, properties, formatting and async programming.
View tutorial guide →Python
Python scripts, CSV processing, data validation and automation.
View tutorial guide →Node.js
Server-side JavaScript, HTTP routing, JSON and API development.
View tutorial guide →React.js
Components, JSX, events, state and interactive user interfaces.
View tutorial guide →ADO.NET
Connections, commands, parameters, data tables and transactions.
View tutorial guide →GridView
Columns, paging, row formatting, summaries and exports.
View tutorial guide →Oracle / PL/SQL
Blocks, variables, cursors, stored programs and batch processing.
View tutorial guide →SQL*Loader
Control files, transformations, skipped records and error handling.
View tutorial guide →jQuery
Selectors, attributes, CSS, visibility and DOM operations.
View tutorial guide →Bootstrap
Containers, grids, tables and component examples.
View tutorial guide →Crystal Reports
Data sources, formulas, grouping, subreports and crosstabs.
View tutorial guide →AJAX
Partial-page updates, progress indicators and extender controls.
View tutorial guide →A clear place to start
Follow a learning path
Understand a data-driven page
Follow a request through the page lifecycle, controls and data presentation.
Go from blocks to batches
Learn PL/SQL structure, work with multiple rows and move into bulk processing.
Practical walkthroughs
Solve a common problem
Skip CSV headers with SQL*Loader
Start a file import at the right record and avoid treating a header as data.
Read the walkthrough →Choose the right ADO.NET command
Understand when to use ExecuteScalar, ExecuteReader and ExecuteNonQuery.
Read the walkthrough →Build a Crystal Reports subreport
Combine a main report with a subreport in an ASP.NET application.
Read the walkthrough →Keep learning
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