C# InstallContext.IsParameterTrue方法代碼示例

	// Run the installation process.
	private int Install()
			{
				// Scan the command-line options in groups.
				int posn = 0;
				int start;
				String arg;
				bool both;
				uninstall = false;
				if(args.Length == 0)
				{
					Usage();
					return 1;
				}
				while(posn < args.Length)
				{
					// Extract the next group of options.
					start = posn;
					while(posn < args.Length)
					{
						arg = args[posn];
						if(arg.Length == 0)
						{
							break;
						}
						if(arg[0] == '-')
						{
							// Option that starts with "-".
							++posn;
							if(arg.Length == 2 && arg[1] == '-')
							{
								// We use "--" to terminate the option
								// list just prior to a filename that
								// starts with "-" or "/".
								break;
							}
						}
						else if(arg[0] == '/')
						{
							// Compatibility option that starts with "/".
							++posn;
						}
						else if(arg[0] == '=')
						{
							// May be specifying a value for a previous option.
							++posn;
						}
						else if(posn > start && args[posn - 1].EndsWith("="))
						{
							// Specifying a value for a previous option name.
							++posn;
						}
						else
						{
							// This is a filename.
							break;
						}
					}

					// Parse the command line options that we just received.
					optionDict = InstallContext.ParseCommandLine
						(args, start, posn - start, out options);

					// Extract the filename.
					if(posn < args.Length)
					{
						filename = args[posn++];
					}
					else
					{
						filename = null;
					}

					// Create an install context for this option group.
					context = new InstallContext(optionDict);

					// Check for the "uninstall" and "install" flags.
					both = false;
					if(context.IsParameterTrue("uninstall") ||
					   context.IsParameterTrue("u"))
					{
						uninstall = true;
						both = true;
					}
					if(context.IsParameterTrue("install") ||
					   context.IsParameterTrue("i"))
					{
						if(both)
						{
						#if !CONFIG_SMALL_CONSOLE
							Console.Error.WriteLine
								("{0}: cannot specify both `--install' and " +
								 "`--uninstall'", program);
						#else
							Console.WriteLine
								("{0}: cannot specify both `--install' and " +
								 "`--uninstall'", program);
						#endif
							return 1;
						}
//.........這裏部分代碼省略.........

 internal static void LogException(Exception e, InstallContext context)
 {
     bool flag = true;
     while (e != null)
     {
         if (flag)
         {
             context.LogMessage(e.GetType().FullName + ": " + e.Message);
             flag = false;
         }
         else
         {
             context.LogMessage(Res.GetString("InstallLogInner", new object[] { e.GetType().FullName, e.Message }));
         }
         if (context.IsParameterTrue("showcallstack"))
         {
             context.LogMessage(e.StackTrace);
         }
         e = e.InnerException;
     }
 }

	// Load an assembly by name and get the information object for it.
	internal static AssemblyInfo LoadInstallerAssembly
				(String filename, InstallContext logContext)
			{
				String fullName;
				AssemblyInfo info;
				AssemblyInfo[] newAssemblies;
				int index;
				lock(typeof(AssemblyInstaller))
				{
					try
					{
						// See if we have a cached information block,
						// from when we loaded the assembly previously.
						fullName = IO.Path.GetFullPath(filename);
						if(assemblies != null)
						{
							for(index = 0; index < assemblies.Length; ++index)
							{
								info = assemblies[index];
								if(info.filename == fullName)
								{
									if(info.loadException == null)
									{
										return info;
									}
									throw info.loadException;
								}
							}
							newAssemblies = new AssemblyInfo
								[assemblies.Length + 1];
							Array.Copy(assemblies, 0, newAssemblies, 0,
									   assemblies.Length);
							info = new AssemblyInfo();
							newAssemblies[assemblies.Length] = info;
							assemblies = newAssemblies;
						}
						else
						{
							info = new AssemblyInfo();
							assemblies = new AssemblyInfo [] {info};
						}

						// Try to load the assembly into memory.
						info.filename = fullName;
						try
						{
							info.assembly = Assembly.LoadFrom(fullName);
						}
						catch(SystemException e)
						{
							info.loadException = e;
							throw;
						}

						// Wrap the assembly in an installer.
						info.installer = new AssemblyInstaller();
						info.installer.assemblyPath = filename;
						info.installer.info = info;

						// Search for all public installer types.
						LoadInstallers(info);

						// The assembly is ready to go.
						return info;
					}
					catch(SystemException e)
					{
						if(logContext != null)
						{
							if(logContext.IsParameterTrue("ShowCallStack"))
							{
								logContext.LogLine
									("LoadAssembly: " + e.ToString());
							}
							else
							{
								logContext.LogLine
									("LoadAssembly: " + e.Message);
							}
						}
						throw new InvalidOperationException
							(String.Format
								(S._("Installer_CouldNotLoadAssembly"),
								 filename), e);
					}
				}
			}