我试图在Parallel.For中削减DateTime：
部分代码：
public void LoadLogFile(String fileName) {
//Thread.CurrentThread.Priority = ThreadPriority.Lowest;
String currentFile = "";
if (fileName.Contains("Compass")) {
currentFile = "Compass";
CompassLogLoadCompleted = false;
compassLogCollection.Clear();
compassLogCollection.AsParallel();
} else if (fileName.Contains("")) {
currentFile = "CoreService";
CoreServiceLogLoadCompleted = false;
coreServiceLogCollection.Clear();
;
compassLogCollection.AsParallel();
} else {
Console.Out.WriteLine("Wrong File");
}
if (fileName.Contains("CoreService") ||
fileName.Contains("Compass")) {
int numberOfSingleLineLog = 0;
int numberOfmultipleLineLog = 0;
String[] lines = new string[] {};
String temp = "";
string[] parts;
DateTime dateTime = new DateTime();
LoggingLvl loggingLvl = new LoggingLvl();
LoggingLvl.ELoggingLvl eLoggingLvl = new LoggingLvl.ELoggingLvl();
int id = 0;
char[] delimiters = new[] {' '};
string threadId = "";
string loggingMessage;
string loggingMessage2 = "";
//string dateAndTimestamp = "";
int ff = 0;
// Read the File and add it to lines string
try {
swCompass.Start();
lines = File.ReadAllLines(fileName);
swCompass.Stop();
} catch (Exception e) {
CompassLogLoadCompleted = true;
CoreServiceLogLoadCompleted = true;
Console.WriteLine("The file could not be read:");
Console.WriteLine(e.Message);
}
swCompass.Reset();
swCompass.Start();
// Adding the objects to the collections
//compassLogCollection.EnableNotify = false;
Parallel.For(0, lines.Count(), j => {
//for (int i = 0; i < lines.Count(); i++) {
string dateAndTimestamp = "";
if (!CompassLogLoadCompleted || !CoreServiceLogLoadCompleted) {
try {
if (SingleLined(ref lines, j)) {
parts = lines[j].Split(delimiters,
StringSplitOptions.
RemoveEmptyEntries);
numberOfSingleLineLog++;
foreach (string t in parts) {
switch (ff) {
case 0:
dateAndTimestamp = t;
break;
case 1:
dateAndTimestamp += " " + t.Replace(",", ".");
dateTime = DateTime.Parse(dateAndTimestamp);
//dateTime = new DateTime();
dateAndTimestamp = "";
break;
case 2:
eLoggingLvl = loggingLvl.ParseLoggingLvl(t);
break;
case 3:
threadId = t;
break;
default:
temp += t;
break;
}
ff++;
}
loggingMessage = temp;
temp = "";
ff = 0;
id++;
loggingLvl = new LoggingLvl(eLoggingLvl);
if (fileName.Contains("Compass")) {
//CompassLogLoadPercent = ((double) numberOfSingleLineLog/lines.Count())*100;
CompassLogData cLD =
new CompassLogData(
(numberOfSingleLineLog +
numberOfmultipleLineLog),
dateTime,
loggingLvl, threadId,
loggingMessage);
//await addRoCompassLogCollectionAsync(cLD);
compassLogCollection.Add(cLD);
} else if (fileName.Contains("CoreService")) {
CoreServiceLogData cSLD =
new CoreServiceLogData(
(numberOfSingleLineLog +
numberOfmultipleLineLog),
dateTime,
loggingLvl,
threadId,
loggingMessage);
//await addRoCoreServiceCollectionAsync(cSLD);
coreServiceLogCollection.Add(cSLD);
} else {
Console.Out.WriteLine("File Not recognizable ");
}
//Console.Out.WriteLine(loggingMessage);
//loggingMessage = "";
} else {
loggingMessage2 += lines[j];
loggingMessage2 += "\n";
//parts[i] += lines[i];
//parts[i] += "\n";
if (NextLineIsANumber(ref lines, j)) {
numberOfmultipleLineLog++;
//Console.Out.WriteLine(loggingMessage2);
parts = loggingMessage2.Split(delimiters,
StringSplitOptions.
RemoveEmptyEntries);
foreach (string t in parts) {
switch (ff) {
case 0:
dateAndTimestamp = t;
break;
case 1:
dateAndTimestamp += " " +
t.Replace(",", ".");
//dateTime = DateTime.Parse(dateAndTimestamp);
dateTime = new DateTime();
dateAndTimestamp = "";
break;
case 2:
eLoggingLvl =
loggingLvl.ParseLoggingLvl(t);
break;
case 3:
threadId = t;
break;
default:
temp += t;
break;
}
ff++;
}
loggingMessage = temp;
temp = "";
ff = 0;
id++;
loggingLvl = new LoggingLvl(eLoggingLvl);
if (fileName.Contains("Compass")) {
CompassLogData cLD =
new CompassLogData(
(numberOfSingleLineLog +
numberOfmultipleLineLog),
dateTime,
loggingLvl, threadId,
loggingMessage);
//await addRoCompassLogCollectionAsync(cLD);
compassLogCollection.Add(cLD);
} else if (fileName.Contains("CoreService")) {
CoreServiceLogData cSLD =
new CoreServiceLogData(
(numberOfSingleLineLog +
numberOfmultipleLineLog),
dateTime,
loggingLvl,
threadId,
loggingMessage);
//await addRoCoreServiceCollectionAsync(cSLD);
coreServiceLogCollection.Add(cSLD);
} else {
Console.Out.WriteLine("File Not recognizable ");
}
loggingMessage2 = "";
}
}
} catch (Exception e) {
Console.Out.WriteLine("Shit Happens");
Console.Out.WriteLine(e.StackTrace);
}
if (currentFile == "Compass") {
//CompassLogLoadPercent =
// ((double)
// i
// /lines.Count())*100;
CompassLogLoadPercent = ((double)
j
/lines.Count())*100;
} else if (currentFile == "CoreService") {
CoreServiceLogLoadPercent =
((double)
j
/lines.Count())*100;
}
}
});
//}
//compassLogCollection.EnableNotify = true;
//compassLogCollection.notifyAll();
if (currentFile == "Compass") {
Console.Out.WriteLine("Compass TIME: " + swCompass.Elapsed);
} else {
Console.Out.WriteLine("CoreSevice TIME: " + swCompass.Elapsed);
}
if (currentFile == "Compass") {
CompassLogLoadCompleted = true;
Console.Out.WriteLine("Compass LOADING DONE");
} else if (currentFile == "CoreService") {
CoreServiceLogLoadCompleted = true;
Console.Out.WriteLine("CoreService LOADING DONE");
}
//CoreServiceLogLoadCompleted = true;
Console.Out.WriteLine("numberOfSingleLineLog: " +
numberOfSingleLineLog);
Console.Out.WriteLine("numberOfmultipleLineLog: " +
numberOfmultipleLineLog);
Console.Out.WriteLine("numberOfLogs: " +
(numberOfSingleLineLog +
numberOfmultipleLineLog));
Console.Out.WriteLine("");
//}
}
}
但我得到以下例外：
at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles)
at System.DateTime.Parse(String s)
at LogViewerV1.LogSession.<>c__DisplayClass3.<LoadLogFile>b__0(Int32 i) in c:\Users\Reza\Documents\Visual Studio 2012\Projects\Pallas informatik\LogViewerV1\LogViewerV1\src\LogSession.cs:line 169
A first chance exception of type 'System.FormatException' occurred in mscorlib.d
如果我在普通的for循环中运行它，我不会得到任何异常，一切正常。 任何想法如何解决这个问题？
答案 0 :(得分：0)
FormatException表示输入的DateTime不是预期的格式。您应该使用DateTime.Parse的重载，它允许您指定DateTypeStyle。
请参阅http://msdn.microsoft.com/en-us/library/system.datetime.parse.aspx#Parse1_Example
答案 1 :(得分：0)
我认为问题在于你以某种方式设定了主线程的文化。但是文化不会复制到任何其他线程，因此运行Parallel.For()循环（的一部分）的后台线程具有不同的文化。
您应该做的是明确指定要使用的文化：
DateTime.Parse(dateAndTimestamp, theCorrectCulture)