how to read all files inside particular folder
using System.IO;...foreach (string file in Directory.EnumerateFiles(folderPath, "*.xml")){ string contents = File.ReadAllText(file);}Note the above uses a .NET 4.0 feature; in previous versions replace EnumerateFiles with GetFiles). Also, replace File.ReadAllText with your preferred way of reading xml files - perhaps XDocument, XmlDocument or an XmlReader.