列出.NET程序所依赖的Assembly

有的时候你可能会碰到.NET程序在发布机上不能启动的问题，.NET程序告诉你有的Assembly不能加载，你想看看.NET程序到底依赖于哪些Assembly的话，可以试一下下面的程序（注意：你只能在可以执行这个.NET程序的机器上运行下面的程序）：

1. using System;

2. using System.Collections.Generic;

3. using System.Linq;

4. using System.Text;

5. using System.Reflection;

6. using System.IO;

7. using System.Diagnostics;

9. namespace ListDependents

10. {

11. class Program

12. {

13. private const string HOST_ASSEMBLY_NAME = "han";

14.

15. public static void Main(string[] args)

16. {

17. if (args.Length != 1)

18. {

19. Console.WriteLine("Usage: ListDependents <assembly path>");

20. return;

21. }

22.

23. ListDependentsByAppDomain(args[0]);

24. }

25.

26. /// <summary>

27. /// Use AppDomain.Load to load assemblies

28. ///

29. /// This approach has its benefit,you can apply assembly app.config file to load

30. /// the dependented assembly,please read

31. /// </summary>

32. /// <param name="p"></param>

33. private static void ListDependentsByAppDomain(string path)

34. {

35. if (string.IsNullOrEmpty(path))

36. throw new ArgumentNullException("path");

37.

38. AppDomainSetup setup = new AppDomainSetup();

39.

40. string assemblyPath = Path.GetFullPath(path);

41. // setup.ApplicationBase = Path.GetDirectoryName(assemblyPath);

42. setup.ApplicationName = Path.GetFileNameWithoutExtension(path);

43. // Try to get assembly's app.config file

44. string configPath = assemblyPath + ".config";

45. if (File.Exists(configPath))

46. setup.ConfigurationFile = configPath;

47.

48. AppDomain workingDomain = AppDomain.CreateDomain("ListDep",null,setup);

49. workingDomain.SetData(HOST_ASSEMBLY_NAME,typeof(Program).Assembly.GetName().Name);

50.

51. Trace.WriteLine("Start working domain");

52. string extension = Path.GetExtension(assemblyPath);

53. try

54. {

55. if (extension == ".exe")

56. workingDomain.ExecuteAssembly(assemblyPath);

57. else

58. workingDomain.Load(assemblyPath);

59. }

60. catch (Exception ex)

61. {

62. Trace.TraceWarning(string.Format("Failed to load {0} with exception {1}",

63. assemblyPath,ex.Message));

64. }

65.

66. workingDomain.DomainUnload += new EventHandler(CollectDependents);

67. Trace.WriteLine("Unload working domain");

68. AppDomain.Unload(workingDomain);

69. }

70.

71. private static void CollectDependents(object sender,EventArgs e)

72. {

73. string hostAssemblyName = (string)AppDomain.CurrentDomain.GetData(HOST_ASSEMBLY_NAME);

74. Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();

75.

76. using (StreamWriter writer = new StreamWriter(@"dependents.txt",false))

77. {

78. writer.WriteLine("digraph AssemblyDependence");

79. writer.WriteLine("{");

80.

81. foreach (Assembly assembly in assemblies)

82. {

83. AssemblyName name = assembly.GetName();

84. if (name.Name == hostAssemblyName)

85. continue;

86.

87. string regName = name.Name.Replace(".","_");

88. writer.WriteLine("/t{0} [label = /"{1}/",style=filled,fillcolor=orange,fontsize=8,fontcolor=white,fontname=Impact]",

89. regName,regName);

90. }

91.

92. writer.WriteLine();

93.

94. foreach (Assembly assembly in assemblies)

95. {

96. AssemblyName[] depdents = assembly.GetReferencedAssemblies();

97. AssemblyName name = assembly.GetName();

98. if (name.Name == hostAssemblyName)

99. continue;

100.

101. foreach (AssemblyName depdentName in depdents)

102. {

103. writer.WriteLine("/t{0} -> {1} [fontsize=8,fontcolor=blue]",

104. name.Name.Replace(".","_"),depdentName.Name.Replace(".","_"));

105. }

106. }

107. writer.WriteLine("}");

108. }

109. }

110. }

111. }

112.

这个程序的原理是，当.NET加载.NET程序以后，.NET自己会解决.NET程序Assembly之间依赖的问题，而且.NET会自己维护Assembly之间的依赖关系。因此我们只要将其打印出来，并且配上Graphivz程序生成一个依赖图就可以一目了然.NET之间的依赖关系了。

列出.NET程序所依赖的Assembly

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