C#实现程序的版本自动升级更新

我们做了程序，不免会有版本升级，这就需要程序有自动版本升级的功能。

1 using System;

2 using System.Collections.Generic;

3 using System.Text;

4 using System.Reflection;

5 using System.IO;

6 using System.Net;

7 using System.Xml;

8

9 namespace Update

10 {

11 /// <summary>

12 /// 更新完成触发的事件

13 /// </summary>

14 public delegate void UpdateState();

15 /// <summary>

16 /// 程序更新

17 /// </summary>

18 public class SoftUpdate

19 {

20

21 private string download;

22 private const string updateUrl = "http://www.csdn.net/update.xml";//升级配置的XML文件地址

23

24 #region 构造函数

25 public SoftUpdate() { }

26

27 /// <summary>

28 /// 程序更新

29 /// </summary>

30 /// <param name="file">要更新的文件</param>

31 public SoftUpdate(string file,string softName) {

32 this.LoadFile = file;

33 this.SoftName = softName;

34 }

35 #endregion

36

37 #region 属性

38 private string loadFile;

39 private string newVerson;

40 private string softName;

41 private bool isUpdate;

42

43 /// <summary>

44 /// 或取是否需要更新

45 /// </summary>

46 public bool IsUpdate

47 {

48 get

49 {

50 checkUpdate();

51 return isUpdate;

52 }

53 }

54

55 /// <summary>

56 /// 要检查更新的文件

57 /// </summary>

58 public string LoadFile

59 {

60 get { return loadFile; }

61 set { loadFile = value; }

62 }

63

64 /// <summary>

65 /// 程序集新版本

66 /// </summary>

67 public string NewVerson

68 {

69 get { return newVerson; }

70 }

71

72 /// <summary>

73 /// 升级的名称

74 /// </summary>

75 public string SoftName

76 {

77 get { return softName; }

78 set { softName = value; }

79 }

80

81 #endregion

82

83 /// <summary>

84 /// 更新完成时触发的事件

85 /// </summary>

86 public event UpdateState UpdateFinish;

87 private void isFinish() {

88 if(UpdateFinish != null)

89 UpdateFinish();

90 }

91

92 /// <summary>

93 /// 下载更新

94 /// </summary>

95 public void Update()

96 {

97 try

98 {

99 if (!isUpdate)

100 return;

101 WebClient wc = new WebClient();

102 string filename = "";

103 string exten = download.Substring(download.LastIndexOf("."));

104 if (loadFile.IndexOf(@"/") == -1)

105 filename = "Update_" + Path.GetFileNameWithoutExtension(loadFile) + exten;

106 else

107 filename = Path.GetDirectoryName(loadFile) + "//Update_" + Path.GetFileNameWithoutExtension(loadFile) + exten;

108 wc.DownloadFile(download, filename);

109 wc.Dispose();

110 isFinish();

111 }

112 catch

113 {

114 throw new Exception("更新出现错误，网络连接失败！");

115 }

116 }

117

118 /// <summary>

119 /// 检查是否需要更新

120 /// </summary>

121 public void checkUpdate()

122 {

123 try {

124 WebClient wc = new WebClient();

125 Stream stream = wc.OpenRead(updateUrl);

126 XmlDocument xmlDoc = new XmlDocument();

127 xmlDoc.Load(stream);

128 XmlNode list = xmlDoc.SelectSingleNode("Update");

129 foreach(XmlNode node in list) {

130 if(node.Name == "Soft" && node.Attributes["Name"].Value.ToLower() == SoftName.ToLower()) {

131 foreach(XmlNode xml in node) {

132 if(xml.Name == "Verson")

133 newVerson = xml.InnerText;

134 else

135 download = xml.InnerText;

136 }

137 }

138 }

139

140 Version ver = new Version(newVerson);

141 Version verson = Assembly.LoadFrom(loadFile).GetName().Version;

142 int tm = verson.CompareTo(ver);

143

144 if(tm >= 0)

145 isUpdate = false;

146 else

147 isUpdate = true;

148 }

149 catch(Exception ex) {

150 throw new Exception("更新出现错误，请确认网络连接无误后重试！");

151 }

152 }

153

154 /// <summary>

155 /// 获取要更新的文件

156 /// </summary>

157 /// <returns></returns>

158 public override string ToString()

159 {

160 return this.loadFile;

161 }

162 }

163 }

把代码编译为一个类库文件，通过程序引用就OK啦。

传入的参数已经有注释了。

下面是更新的XML文件类容，传到空间上面就可以了，得到XML文件的地址。

1 
  <?
  xml version="1.0" encoding="utf-8" 
  ?>
      

2 
  <
  Update
  >
    

3    
  <
  Soft 
  Name
  ="BlogWriter"
  >
    

4      
  <
  Verson
  >
  1.0.1.2
  </
  Verson
  >
      

5      
  <
  DownLoad
  >
  http://www.csdn.net/BlogWrite.rar
  </
  DownLoad
  >
      

6   
  </
  Soft
  >
    

7 
  </
  Update
  >
    
       

程序更新调用方法：

 1、先引用上面的DLL。

 2、调用方法代码 如下：

1
   
  using
   System;   

 
  2
   
  using
   System.Collections.Generic;   

 
  3
   
  using
   System.ComponentModel;   

 
  4
   
  using
   System.Data;   

 
  5
   
  using
   System.Drawing;   

 
  6
   
  using
   System.Text;   

 
  7
   
  using
   System.Windows.Forms;   

 
  8
   
  using
   System.IO;   

 
  9
   
  using
   System.Threading;   


  10
   
  using
   System.Net;   


  11
   
  using
   System.Xml;   


  12
   
  using
   Update;   


  13
     


  14
   
  namespace
   UpdateTest   


  15
   {   


  16
       
  public
   
  partial
   
  class
   Form1 : Form   


  17
       {   


  18
           
  public
   Form1()   


  19
           {   


  20
               InitializeComponent();   


  21
               checkUpdate();   


  22
           }   


  23
     


  24
           
  public
   
  void
   checkUpdate()   


  25
           {   


  26
               SoftUpdate app 
  =
   
  new
   SoftUpdate(Application.ExecutablePath, 
  "
  BlogWriter
  "
  );   


  27
               app.UpdateFinish 
  +=
   
  new
   UpdateState(app_UpdateFinish);   


  28
               
  try
    


  29
               {   


  30
                   
  if
   (app.IsUpdate 
  &&
   MessageBox.Show(
  "
  检查到新版本，是否更新？
  "
  , 
  "
  Update
  "
  , MessageBoxButtons.YesNo, MessageBoxIcon.Question) 
  ==
   DialogResult.Yes)   


  31
                   {   


  32
     


  33
                       Thread update 
  =
   
  new
   Thread(
  new
   ThreadStart(app.Update));   


  34
                       update.Start();   


  35
                   }   


  36
               }   


  37
               
  catch
   (Exception ex)   


  38
               {   


  39
                   MessageBox.Show(ex.Message);   


  40
               }   


  41
           }   


  42
     


  43
           
  void
   app_UpdateFinish() {   


  44
                   MessageBox.Show(
  "
  更新完成，请重新启动程序！
  "
  , 
  "
  Update
  "
  , MessageBoxButtons.OK, MessageBoxIcon.Information);   


  45
           }   


  46
     


  47
       }   


  48
   }  
 
 
  转 http://www.csharpwin.com/csharpspace/10829r586.shtml