public static void Main(string[] args)
{
ProgramArguments arguments = ProgramArguments.Create(args);
// No need to do anything when the value is null; Create already printed errors and usage to the console
if (arguments != null)
{
// This application doesn't do anything useful, it's just a sample of using CommandLineParser after all. We use reflection to print
// the values of all the properties of the sample's CommandLineArguments class, which correspond to the sample's command line arguments.
// We use the LineWrappingTextWriter to neatly wrap console output.
using (LineWrappingTextWriter writer = LineWrappingTextWriter.ForConsoleOut())
{
// Print the full command line as received by the application
writer.WriteLine("The command line was: {0}", Environment.CommandLine);
writer.WriteLine();
// Print the values of the arguments, using reflection to get all the property values
writer.WriteLine("The following argument values were provided:");
writer.WriteLine("Source: {0}", arguments.Source ?? "(null)");
writer.WriteLine("Destination: {0}", arguments.Destination ?? "(null)");
writer.WriteLine("Index: {0}", arguments.Index);
writer.WriteLine("Date: {0}", arguments.Date == null ? "(null)" : arguments.Date.ToString());
writer.WriteLine("Count: {0}", arguments.Count);
writer.WriteLine("Verbose: {0}", arguments.Verbose);
writer.WriteLine("Values: {0}", arguments.Values == null ? "(null)" : "{ " + string.Join(", ", arguments.Values) + " }");
writer.WriteLine("Help: {0}", arguments.Help);
}
}
}
public override void Run()
{
// This method is invoked after all command line arguments have been parsed
try
{
// We use a LineWrappingTextWriter to neatly wrap console output
using (LineWrappingTextWriter writer = LineWrappingTextWriter.ForConsoleOut())
using (StreamReader reader = new StreamReader(FileName, Encoding.GetEncoding(EncodingName)))
{
// Write the contents of the file to the console
string line;
while ((line = reader.ReadLine()) != null)
{
writer.WriteLine(line);
}
}
}
catch (ArgumentException ex) // Happens if the encoding name is invalid
{
Program.WriteErrorMessage(ex.Message);
// The Main method will return the exit status to the operating system. The numbers are made up for the sample, they don't mean anything.
// Usually, 0 means success, and any other value indicates an error.
ExitCode = 2;
}
catch (IOException ex)
{
Program.WriteErrorMessage(ex.Message);
ExitCode = 2;
}
catch (UnauthorizedAccessException ex)
{
Program.WriteErrorMessage(ex.Message);
ExitCode = 2;
}
}
