[英]exiting console application c# and writing to log
因此,如果参数检查失败,我将尝试退出控制台应用程序,但是,我仍然希望它记录到文件中。 只要所有参数都正确,日志记录就可以正常工作。 但是,当参数检查失败并到达System.Environment.Exit(0)部分时,日志文件仍然完全为空。 到目前为止,这是代码。 请帮忙,我已经尽力了。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace I2C_File_Splitter
{
class Program
{
static void Main(string[] args)
{
//get command line input paramaters
using (StreamWriter log = File.AppendText("Splitter_log.txt"))
{
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER STARTED ****************************************************************");
log.WriteLine(DateTime.Now + " FILE: " + args[0] + " DESTINATION: " + args[1] + " MAX COUNT PER FILE: " + args[2]);
if (args.Length == 0)
System.Environment.Exit(0);
string originalFile = args[0];
string destination = args[1];
int fileLength = Convert.ToInt32(args[2]);
string fileName;
string fileExtension;
string line;
int fileNumber = 1;
if (!File.Exists(originalFile))
{
log.WriteLine(DateTime.Now + " Error: Transfund file not found for: " + args[0]);
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER ENDED ****************************************************************");
System.Environment.Exit(0);
}
if (!Directory.Exists(destination))
{
log.WriteLine(DateTime.Now + " Error: destination directory not found for: " + args[1] );
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER ENDED ****************************************************************");
System.Environment.Exit(0);
}
if (fileLength < 0)
{
log.WriteLine(DateTime.Now + " Error: file length must be greater than 0. Incorrect value " + args[2]);
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER ENDED ****************************************************************");
System.Environment.Exit(0);
}
//get file name and file extension
fileName = Path.GetFileNameWithoutExtension(originalFile);
fileExtension = Path.GetExtension(originalFile);
StreamReader file = new StreamReader(originalFile);
log.WriteLine(DateTime.Now + " processing: " + fileName);
string header = file.ReadLine(); //get first line
while ((line = file.ReadLine()) != null)
{
StreamWriter newFile = new StreamWriter(destination + "\\" + fileName + "_" + fileNumber.ToString() + fileExtension);
newFile.WriteLine(header);
newFile.WriteLine(line);
int counter = 1;
while (counter < fileLength)
{
line = file.ReadLine();
if (line == null)
break;
newFile.WriteLine(line);
counter++;
}
newFile.Close();
log.WriteLine(DateTime.Now + " " + fileName + "_" + fileNumber.ToString() + fileExtension + " created. Card count: " + counter);
fileNumber++;
}
log.WriteLine(DateTime.Now + " Processing completed: " + fileName);
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER ENDED ****************************************************************");
}
}
}
}
调用Environment.Exit
,是在告诉它立即终止程序。
您的“日志”流永远不会被刷新(当您到达using
块的末尾时会发生这种情况),因此没有机会将其写入文件。
尝试在调用exit之前冲洗流。
if (!Directory.Exists(destination))
{
log.WriteLine(DateTime.Now + " Error: destination directory not found for: " + args[1] );
log.WriteLine(DateTime.Now + " ******************************************** SPLITTER ENDED ****************************************************************");
// write all pending log messages to the file
log.Flush();
System.Environment.Exit(0);
}
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