C # Implementation of online update software

WinForm programs relative to Web programs, more powerful, more convenient programming, but the software update is quite troublesome, to the client a platform to upgrade, in the face of this practical problem, in a recent small project, I designed a software to achieve automatic upgrade technology scheme to make up for this defect, Have a good reference value

Through some means to update the software background. First you need to have a website that places new versions of information

UpdateSoftwareForm.cs

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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; Using Ccwin; Using System.Net; Using System.Collections; Using System.IO; Using System.Xml; Using System.Diagnostics; Using System.Threading;   namespace Writebook {public partial class Updatesoftwareform:skin_metro {public Updatesoftwareform () {Initiali Zecomponent ();   #region Some objects and variables  //use WebClient to download WebClient client = new WebClient (); ArrayList downlist = new ArrayList (); Current version string nowversion = null; Latest Version string latesversion = null;   #endregion   #region get version number  ///<summary>///Get the latest version number from the server///</summary> public void downl Oadcheckupdatexml () {try {///The first parameter is the address of the file, and the second parameter is the file-saved path file name, client. DownloadFile ("Http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WriteBook2.xml", "Writebook2.xml"); catch {MessageBox.Show ("No updates detected.) "," hint "); This. Close (); }  ///<summary>///get version number of local software///</summary> private void Nowversion () {nowversion = System.reflect Ion. Assembly.getexecutingassembly (). GetName (). Version.tostring () + "n"; Localtext.text = nowversion; }  ///<summary>///Read the latest version number obtained from the server///</summary> public void latestversion () {try {if (file.exists) (" WriteBook2.xml.xml ")) {XmlDocument doc = new XmlDocument ();//load XML doc to read. Load ("WriteBook2.xml.xml");  //Get root node XmlElement writebook = Doc. DocumentElement;  //Get the collection of node return nodes XmlNodeList Update = writebook.childnodes;   foreach (XmlNode item in Update) {latesversion = Item. InnerText; } latesttext.text = Latesversion; ' Else {MessageBox.Show (' No updates detected. "," hint "); This. Close (); } catch {this. Close (); }   #endregion   #region Initialization program  ///<summary>///initialization program///</summary> private void Initiali Zeandinstall () {updateprogressbar.value = 20; Downloadcheckupdatexml (); Updateprogressbar.value = 40; NowverSion (); Updateprogressbar.value = 60; Latestversion (); Updateprogressbar.value = 80; Downloadinstall (); Updateprogressbar.value = 100; }   #endregion   #region installation and removal  ///<summary>///Download installation package///</summary> public void Downloadi Nstall () {try {if (nowversion = = latesversion) {MessageBox.Show ("You are already the latest version.") "," prompt "); else if (nowversion!= latesversion && file.exists ("Writebook2.xml")) {MessageBox.Show ("Discover the new version, the update patch will be downloaded." "," hint ", MessageBoxButtons.OK, MessageBoxIcon.Information); Client. DownloadFile ("Http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WBsetup.exe", "WBsetup.exe"); if (file.exists ("Setup.exe")) {Installanddelete ();} else {for (int i = 1; i < 3; i++) {client. DownloadFile ("Http://bbs.cloudtour.tk/SoftwareDownload/WriteBook/WBsetup.exe", "WBsetup.exe"); MessageBox.Show ("Download failed, please check that your network connection is normal.") "," hint "); This. Close (); The catch {MessageBox.Show ("Update failed, no new version found. "," hint "); This. Close (); }  ///<summary>///installation and deletion///</summary> private void Installanddelete () {try {DialogResult Dr = MessageBox.Show ("Download update succeeded, do you want to install a new update?") "," hint ", messageboxbuttons.yesnocancel); if (dr = = System.Windows.Forms.DialogResult.Yes) {//Start the installer System.Diagnostics.Process.Start ("WBsetup.exe"); Thread td = New Thread (judgeinstall); Td. Start (); ' Else {} ' catch {MessageBox.Show ("Unknown error occurred, update failed. "," hint "); This. Close (); }  ///<summary>///determine if the installation process exists///</summary> public void Judgeinstall () {while (true) {process[] P Rocesslist = Process.getprocesses (); foreach (Process process in processlist) {if (process). ProcessName = = "WBsetup.exe") {} else {DialogResult Dr = MessageBox.Show ("Successful update, do you want to delete the installation package?") "," hint ", messageboxbuttons.yesno); if (dr = = System.Windows.Forms.DialogResult.Yes) {file.delete ("WBsetup.exe"); File.delete ("Writebook2.xml"); {}}}}   #endregion  ///<summary>///Click Initialization///</summary>///<param name= "Sender" >&lt ;/param>///<param name= "E" ></param> Private void Updatebutton_click (object sender, EventArgs e) {Initializeandinstall ();}} }

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