Directly on the code:
Copy Code code as follows:
Using System;
Using System.Collections.Generic;
Using System.Text;
Using System.Reflection;
Using System.IO;
Using System.Net;
Using System.Xml;
Namespace Update
{
<summary>
Update completion of triggered events
</summary>
public delegate void Updatestate ();
<summary>
program updates
</summary>
public class Softupdate
{
private string Download;
Private Const string UpdateUrl = "Http://www.jb51.net/update.xml";//upgrade configuration's XML file address
#region Constructors
Public softupdate () {}
<summary>
program updates
</summary>
<param name= "File" > Files to be updated </param>
Public Softupdate (String file,string softname) {
This. LoadFile = file;
This. Softname = Softname;
}
#endregion
#region Properties
private string LoadFile;
private string Newverson;
private string Softname;
private bool Isupdate;
<summary>
or whether to update
</summary>
public bool Isupdate
{
Get
{
Checkupdate ();
return isupdate;
}
}
<summary>
To check for updated files
</summary>
public string LoadFile
{
get {return loadfile;}
set {loadfile = value;}
}
<summary>
New version of Assembly
</summary>
public string Newverson
{
get {return newverson;}
}
<summary>
Name of the upgrade
</summary>
public string Softname
{
get {return softname;}
set {softname = value;}
}
#endregion
<summary>
Events that are triggered when an update completes
</summary>
public event Updatestate Updatefinish;
private void Isfinish () {
if (updatefinish!= null)
Updatefinish ();
}
<summary>
Download updates
</summary>
public void Update ()
{
Try
{
if (!isupdate)
Return
WebClient WC = new WebClient ();
string filename = "";
string exten = download. Substring (download. LastIndexOf ("."));
if (Loadfile.indexof (@ "\") = = 1)
filename = "Update_" + path.getfilenamewithoutextension (loadfile) + exten;
Else
filename = Path.getdirectoryname (loadfile) + "\\Update_" + path.getfilenamewithoutextension (loadfile) + exten;
Wc. DownloadFile (download, filename);
Wc. Dispose ();
Isfinish ();
}
Catch
{
throw new Exception ("Update error, network connection failed!") ");
}
}
<summary>
Check if updates are required
</summary>
public void Checkupdate ()
{
try {
WebClient WC = new WebClient ();
Stream stream = WC. OpenRead (UpdateUrl);
XmlDocument xmldoc = new XmlDocument ();
Xmldoc.load (stream);
XmlNode list = Xmldoc.selectsinglenode ("Update");
foreach (XmlNode node in list) {
if (node. Name = = "Soft" && node. attributes["Name"]. Value.tolower () = = Softname.tolower ()) {
foreach (XmlNode XML in node) {
if (XML. Name = = "Verson")
Newverson = XML. InnerText;
Else
Download = XML. InnerText;
}
}
}
Version ver = new version (Newverson);
Version Verson = Assembly.LoadFrom (loadfile). GetName (). Version;
int TM = Verson.compareto (ver);
if (tm >= 0)
Isupdate = false;
Else
Isupdate = true;
}
catch (Exception ex) {
throw new Exception ("Update error, please confirm network connection is correct and try again!") ");
}
}
<summary>
Get the file to update
</summary>
<returns></returns>
public override string ToString ()
{
return this.loadfile;
}
}
}
Compiling the code into a class library file is OK by referencing the program.
The parameters passed in already have a comment.
The following is the updated XML file class capacity, uploaded to the space above it, get the address of the XML file.
Copy Code code as follows:
<?xml version= "1.0" encoding= "Utf-8"?>
<Update>
<soft name= "Blogwriter" >
<Verson>1.0.1.2</Verson>
<DownLoad>http://www.jb51.net/BlogWrite.rar</DownLoad>
</Soft>
</Update>
Program Update call Method:
1. Reference the above DLL first.
2, the calling method code is as follows:
Copy Code code as follows:
Using System;
Using System.Collections.Generic;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Text;
Using System.Windows.Forms;
Using System.IO;
Using System.Threading;
Using System.Net;
Using System.Xml;
Using Update;
Namespace Updatetest
{
public partial class Form1:form
{
Public Form1 ()
{
InitializeComponent ();
Checkupdate ();
}
public void Checkupdate ()
{
Softupdate app = new Softupdate (Application.executablepath, "Blogwriter");
App. Updatefinish + = new Updatestate (app_updatefinish);
Try
{
if (app. Isupdate && MessageBox.Show ("Check to new version, update?" "," Update ", Messageboxbuttons.yesno, messageboxicon.question) = = Dialogresult.yes)
{
Thread update = new Thread (app, ThreadStart. Update));
Update. Start ();
}
}
catch (Exception ex)
{
MessageBox.Show (ex. message);
}
}
void App_updatefinish () {
MessageBox.Show ("Update completed, please restart the program!") "," Update ", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
Well, the whole program is over. Please leave me a message if you feel that there is something wrong or questionable.
