a exception at writeline: ArgumentOutofRangeException:specified argument was out of range of valid values.

The error suggests that parameter value of time is invalid.

Hi @小姐 董 , Welcome to Microsoft Q&A,

This error may be caused by intraoperative possibility, buffer overflow or management problem, data anomaly, concurrent access violation, and incorrect resource release.

Before writing to the file, check whether the value of each dataRow field is valid. For example:

if (double.IsNaN(dataRow.XTorque) || double.IsInfinity(dataRow.XTorque))
{
dataRow.XTorque = 0.0; // or other value
}

Perform similar checks on all numeric fields to ensure that the data is valid.

Call the Flush method regularly to clear the buffer and prevent buffer overflow:

if (sw != null)
{
sw.WriteLine(...); // Write a line of data
if (lineCounter % 1000 == 0) // Flush every 1000 lines written
{
sw.Flush();
}
}

Add a try-catch block in the write operation to capture and log exception information:

try
{
sw.WriteLine(...);
}
catch (Exception ex)
{
Console.WriteLine($"Error occurred when writing to the file: {ex.Message}");
}

To ensure that the StreamWriter is properly released after use, you can use the using statement:

using (StreamWriter sw = new StreamWriter("filePath", true))
{
sw.WriteLine(...);
}

If multiple threads are writing to a file at the same time, use lock to ensure that the write operation is thread-safe:

private static readonly object fileLock = new object();

lock (fileLock)
{
sw.WriteLine(...);
}

Best Regards,

Jiale

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