XPath
Concept XPath is a W3C standard, specially designed for navigating and locating nodes within XML documents and serves as the core foundation of XSLT. All expressions inside select=”” and test=”” …
Multi‑branch
1. <xsl:choose> Multi‑branch Conditions Syntax Structure (similar to if … else if … else) Execution flow: Iterate → sort by age → filter height>160 → bold age for entries with …
Condition judgment and sorting
1. <xsl:sort> Sorting Used together with <xsl:for-each> to sort data inside the loop. Syntax Rules Example: sort students by age in ascending order Descending example: 2. <xsl:if> Single‑condition judgment Output …
Loop
Core Tags 1. <xsl:value-of> Purpose: Extract text content from the specified XML node and output it to the result document. When used without the <xsl:for-each> loop, only the first matching …
XSLT example
Complete Example: XML + XSLT Convert to HTML Prepare two files: The XML file declares encoding as ISO‑8859‑1 (Western‑European character set). Some non‑English text cannot be stored properly and will …
Introduction
1. Basic Concepts 1. XSL XSL (EXtensible Stylesheet Language)A stylesheet language for XML defined by W3C. Think of CSS for HTML; XSL is designed for XML. In a broad sense, …
Service installation and uninstallation
Windows Services: Install & Uninstall via InstallUtil.exe Command‑Line and Common Troubleshooting 1. Installing and Uninstalling Windows Services from Command‑Line 1. Tools Microsoft provides InstallUtil.exe for installing and uninstalling .NET Windows …
Your first Windows Service
1. Create a New Windows Service Project Note: Newer Visual Studio versions no longer include this built‑in template. It is only supported for .NET Framework; for .NET Core/.NET 5+, the …
Windows Service
1. What is a Windows Service A Windows Service is a type of program that runs in the background to perform specific tasks. Its key features are: Usage Scenarios Best …
Check existence
Check whether a Key exists in Redis IDatabase.KeyExists(string key)Purpose: Check whether the specified key exists in Redis It returns true as long as the key exists, works for all data …