SystemWebHttpUtility

SystemWebHttpUtility is a class in the System.Web namespace of the .NET Framework, designed to provide methods for encoding and decoding URLs. It is part of the System.Web assembly, which is included in the .NET Framework and is used for building web applications and services.

The class contains several static methods that are commonly used in web development. The most notable methods include:

- HttpUtility.UrlEncode: This method encodes a URL string by converting spaces to plus signs (+) and non-alphanumeric characters to their hexadecimal representation. It is useful for ensuring that URLs are properly formatted and can be safely transmitted over the internet.

- HttpUtility.UrlDecode: This method decodes a URL string by converting plus signs (+) to spaces and hexadecimal representations to their corresponding characters. It is the reverse operation of UrlEncode and is used to retrieve the original URL string from an encoded one.

- HttpUtility.HtmlEncode: This method encodes a string for safe inclusion in HTML by converting special characters to their HTML entity equivalents. It is used to prevent cross-site scripting (XSS) attacks by ensuring that user input is properly sanitized before being displayed on a web page.

- HttpUtility.HtmlDecode: This method decodes an HTML-encoded string by converting HTML entities back to their corresponding characters. It is the reverse operation of HtmlEncode and is used to retrieve the original string from an HTML-encoded one.

SystemWebHttpUtility is a versatile class that is widely used in web development to handle URL and HTML encoding and decoding. It is a part of the System.Web assembly, which is included in the .NET Framework and is used for building web applications and services.