C # Automatic Update design

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Xml;
Using System.Net;
Namespace AutoUpdate
{
public class Autoupdateconfig
{
public string Autoupdateurl {get; set;}
public string Version {get; set;}
public string Description {get; set;}
public int FileCount {get; set;}
public string FilePath {get; set;}
Public list<autoupdatefile> filelist {get; set;}
}
public class Autoupdatefile
{
<summary>
Filename
</summary>
public string FileName {get; set;}
<summary>
File size
</summary>
public string FileSize {get; set;}
<summary>
True indicates a successful download
</summary>
public string Status {get; set;}

}
public class AutoUpdate
{
Public Autoupdateconfig Getautoupdateconfig (string autoupdateurl)
{

Autoupdateconfig model = NULL;
XmlDocument doc = new XmlDocument ();
Try
{
Doc. Load (New WebClient (). OpenRead (Autoupdateurl));
}
catch (Exception ex)
{
DevExpress.XtraEditors.XtraMessageBox.Show (ex. message);
return model;
}
Model = new Autoupdateconfig ();
XmlElement root = Doc. DocumentElement;
Model. Version = root. selectSingleNode ("version"). Innertext.trim ();
Model. Description = root. selectSingleNode ("description"). InnerText;
Model.autoupdateurl = Autoupdateurl;
list<autoupdatefile> list = new list<autoupdatefile> ();
foreach (XmlNode node in root). selectSingleNode ("FileList"). ChildNodes)
{
Autoupdatefile item = new Autoupdatefile ();
item.filename = node. attributes["Name"]. InnerText;
item.filesize = node. attributes["Size"]. InnerText;
Item.status = "";
List. ADD (item);
}
Model.filelist = list;
Model.filecount = list. Count;
return model;
}
public void FormatVersion (ref string ver1, ref string ver2)
{
Ver1 = Ver1. Replace (".", "");
Ver2 = Ver2. Replace (".", "");
if (ver1. Length < Ver2. Length)
{
Ver1 = Ver1. PadRight (ver2. Length, ' 0 ');
}
Else
{
Ver2 = Ver2. PadRight (Ver1. Length, ' 0 ');
}

}

}
}

=============================frmmain.cs

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 System.Xml;
Using System.Net;
Using System.Diagnostics;
Using System.Reflection;
Namespace AutoUpdate
{
public partial class FrmMain:DevExpress.XtraEditors.XtraForm
{
AutoUpdate dal = new AutoUpdate ();
Autoupdateconfig model;
String Autoupdateurl {get; set;}
String ProcessName {get; set;}
Public Frmmain (String autoupdateurl, String processname)
{
InitializeComponent ();

This.autoupdateurl = Autoupdateurl;
This.processname = ProcessName;
}

        private void Frmmain_load (object sender, EventArgs e)
  & nbsp;     {
            Txtdescription.visible = true;
            gridcontrol1.visible = false;
            btnupdate.text = "Next";
            model = dal. Getautoupdateconfig (Autoupdateurl);

if (model = = NULL)
{
btnupdate.enabled = false;
Txtdescription.text = autoupdateurl+ "\ r \ n Remote server error";

}
Else
{
Txtdescription.text = model. Description;
String version = Assembly.getexecutingassembly (). GetName (). Version.tostring ();
string ver1 = version;
String ver2 = model. Version;
Dal.formatversion (ref ver1, ref ver2);
if (Convert.ToInt32 (ver1) >= Convert.ToInt32 (ver2))
{
DevExpress.XtraEditors.XtraMessageBox.Show ("Current is the latest version no need to update", "hint");
}
if (model!= null)
{
Gridcontrol1.datasource = model.filelist;
}
}
}
void Client_downloadfilecompleted (object sender, AsyncCompletedEventArgs e)
{
Autoupdatefile item = (autoupdatefile) e.userstate;
if (e.error!= null)
{
Item.status = "Download Failed";
Gridview1.refreshdata ();
}
Else
{
Model.fileList.FirstOrDefault (U => u.filename = = item.filename). Status = "Success";
Item.status = "Success";
Gridview1.refreshdata ();
if (Model.fileList.FirstOrDefault (U => u.status!= "success") = = null)
{
DevExpress.XtraEditors.XtraMessageBox.Show ("has successfully upgraded to" + model.) Version + ", please reopen the WMS system", "prompt");
This. Text = "Successfully upgraded to" + model. Version;
Btnupdate.visible = false;
}
}
}
void Client_downloadprogresschanged (object sender, DownloadProgressChangedEventArgs e)
{
Autoupdatefile item = (autoupdatefile) e.userstate;
Item.status= (E.bytesreceived/convert.todecimal (e.totalbytestoreceive)). ToString ("P");
Gridview1.refreshdata ();
}
private void Btnupdate_click (object sender, EventArgs e)
{
if (txtdescription.visible)
{
if (Process.getprocessesbyname (this.processname). Length > 0)
{
DevExpress.XtraEditors.XtraMessageBox.Show ("Please close the WMS Main system", "warning");
Return
}

Gridcontrol1.visible = true;
Txtdescription.visible = false;
Btnupdate.text = "Upgrade";

}
Else
{
for (int i = 0; i < Gridview1.rowcount; i++)
{
Autoupdatefile item = (autoupdatefile) gridview1.getrow (i);
using (WebClient client = new WebClient ())
{
string fileName = Item.filename;
Client. DownloadFileAsync (new Uri (new Uri (Model.autoupdateurl), filename), filename, item);
Client. DownloadProgressChanged + = new Downloadprogresschangedeventhandler (client_downloadprogresschanged);
Client. downloadfilecompleted + = new Asynccompletedeventhandler (client_downloadfilecompleted);
}
}
}

}

private void Btnexit_click (object sender, EventArgs e)
{
This. Close ();
}

}
}