using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; // using System.Linq; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { this.Text = "Microsoft Visual Studio 2010 C#"; string filePath = @"D:/app/database/db.xml"; if(System.IO.File.Exists(filePath)){ MessageBox.Show("File is exists",this.Text); ZipFile(filePath); }else{ MessageBox.Show("File no exists",this.Text); System.Xml.XmlTextWriter xmlTextWriter = new System.Xml.XmlTextWriter(filePath, Encoding.Default); xmlTextWriter.WriteStartDocument(