Data Validation guidelines for ASP.NET applications

Data validation in ASP.NET programming is all about avoiding data cleanup tasks on the backend by avoiding bad data coming in. The ASP.NET validation controls and third party validation controls help you receive the right data in the right format. ASP.NET provides some nice controls to perform validation.

A controlled and centralized web framework can offer many advantages related to security to the web applications. In ASP.NET application development, it needs to be backed up with the page-specific security measures to ensure proper data validation. Here are some guidelines on employing proper data validation:
> Avoid the database write actions against the URL parameters
> Ensure that every POST action is actually done from an internal application page
> All the possible exceptions should send only user-friendly messages to the browser
> Any webpage displaying data on the browser that cannot be guaranteed to be safe should be encoded using the server.htmlencode. This will certainly prevent any malicious cross-site scripting attacks
> All the web pages should enforce strict data validation on any piece of data
> Consider the regular expressions as a great way to constrain input in ASP.NET

Thus, these were the basic guidelines to for effective implementation of data validation for ASP.NET programmers.

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