versionfunc.cs

是一款式CSDN阅读器,可以方便CSDN用户阅读自己感兴趣的内容！

using System;
using System.Collections.Generic;
using System.Text;

using System.Data;
using feiyun0112.cnblogs.com.CSDNReader.Model;
using System.Xml;
using System.Windows.Forms;


namespace feiyun0112.cnblogs.com.CSDNReader.Functions
{
    class VersionFunc
    {
        public void CheckDB()
        {
            try
            {
                string strDBVersion = new SettingDBFunc().GetSettingValue( "DBVersion");

                if (strDBVersion == Setting.Version)
                {
                    return;
                }

                VersionDBFunc v = new VersionDBFunc();
                v.UpdateDBVersion(strDBVersion);
            }
            catch
            {
            }
        }

        
        public bool CheckProgram()
        {
            WEBFunc wFunc = new WEBFunc();
            string strHTML = "";
            Encoding encoding = Variant.Encoding;

            try
            {
                strHTML = wFunc.GetHTML("http://www.cnblogs.com/Files/feiyun0112/CSDNReader.xml", encoding);
            }
            catch
            {
                strHTML = "";
            }

            if (strHTML == "")
            {
                return false;
            }
            string strVersion = "";
            string strCheckedVersion = "";
            try
            {
                XmlDocument xml = new XmlDocument();

              
                xml.LoadXml(strHTML);

                 strVersion = xml.SelectSingleNode("//version").FirstChild.Value;

                if (strVersion.CompareTo(Setting.Version) > 0)
                {

                     strCheckedVersion = new SettingDBFunc().GetSettingValue("CheckedVersion");

                    if (strVersion.CompareTo(strCheckedVersion) > 0)
                    {
                        if (MsgFunc.ShowQuestion(string.Format("发现新版本： {0}  是否下载？", strVersion)) == DialogResult.Yes)
                        {
                            string URL;
                            URL = "http://www.cnblogs.com/feiyun0112/archive/2006/09/20/509783.html";
                            System.Diagnostics.Process.Start(URL);

                            URL = "http://www.cnblogs.com/Files/feiyun0112/CSDNReader2005.rar";
                            System.Diagnostics.Process.Start(URL);

                            return true;
                        }

                    }
                }

            }
            catch
            {

            }
            finally
            {
                if (strVersion.CompareTo(strCheckedVersion) > 0)
                {
                    VersionDBFunc v = new VersionDBFunc();
                    v.UpdateVersion(strVersion);
                }
            }

            return false;
        }
    }
}