string-toupper

C# – Read XML element attributes with XElement (Linq)

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XML elements can have attributes, which are key-value pairs. To read the attributes, use XElement to parse the XML string (from the Linq-to-Xml API). Then you can use these two methods for getting attributes: Once you have the attributes, use the XAttribute.Value property to read the attribute’s string value. Here’s an example of getting all … Read more

C# – Find XML element by name with XElement (Linq)

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Use the XElement class (from the Linq-to-Xml API) to search for XML elements by name. There are two main methods you can use to do this: These return the matching elements as an IEnumerable<XElement>. You can then use Linq methods (or a foreach loop) to do whatever you want with these elements (such as outputting … Read more

C# – Waiting for user input in a Console App

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The following code shows how to wait for user input in a Console App: When the user types something in and presses the Enter key, Console.ReadLine() will return what they typed. Console.ReadLine() vs Console.ReadKey() Console.ReadLine() waits for the user to press Enter, and then returns everything they typed in. Console.ReadKey() returns individual key presses. It … Read more

C# – Hex string to byte array

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This article shows code for converting a hex string to a byte array, unit tests, and a speed comparison. First, this diagram shows the algorithm for converting a hex string to a byte array. To convert a hex string to a byte array, you need to loop through the hex string and convert two characters … Read more