如何设置最大并行线程数

using Google.Protobuf.WellKnownTypes;
using IronBarCode;
using System;
using System.IO;

int maxParallelThreads = 4;


var optionsFaster = new BarcodeReaderOptions
{
    // Set Max threads to 4
    Multithreaded = true,
    MaxParallelThreads = maxParallelThreads,
};

// Dynamically get the "images" folder in the current directory
string folderPath = Path.Combine(Directory.GetCurrentDirectory(), "images");

// Retrieve all JPG files in the directory
var pdfFiles = Directory.GetFiles(folderPath, "*.jpg");

foreach (var file in pdfFiles)
{
    // Read the barcode
    var results = BarcodeReader.Read(file);

    foreach (var result in results)
    {
        // Show the type and value for every barcode found
        Console.WriteLine($"Value: {result.Value}, Type: {result.BarcodeType}");

    }

}

Imports Google.Protobuf.WellKnownTypes
Imports IronBarCode
Imports System
Imports System.IO

Dim maxParallelThreads As Integer = 4

Dim optionsFaster As New BarcodeReaderOptions With {
    .Multithreaded = True,
    .MaxParallelThreads = maxParallelThreads
}

' Dynamically get the "images" folder in the current directory
Dim folderPath As String = Path.Combine(Directory.GetCurrentDirectory(), "images")

' Retrieve all JPG files in the directory
Dim pdfFiles = Directory.GetFiles(folderPath, "*.jpg")

For Each file In pdfFiles
    ' Read the barcode
    Dim results = BarcodeReader.Read(file)

    For Each result In results
        ' Show the type and value for every barcode found
        Console.WriteLine($"Value: {result.Value}, Type: {result.BarcodeType}")
    Next
Next

using IronBarCode;
using System;
using System.Diagnostics;
using System.IO;
using System.Linq;

// Set the max parallel threads to the number of processor cores
int maxParallelThreads = Environment.ProcessorCount;


var optionsFaster = new BarcodeReaderOptions
{
    // Set Max threads to the number of processor cores
    Multithreaded = true,
    MaxParallelThreads = maxParallelThreads,
    ExpectMultipleBarcodes = true,
};

// Start timing the process
var stopwatch = Stopwatch.StartNew();
// Dynamically get the "images" folder in the current directory
string folderPath = Path.Combine(Directory.GetCurrentDirectory(), "images");

// Check if directory exists to prevent crashes
if (!Directory.Exists(folderPath))
{
    Console.WriteLine($"Error: The directory '{folderPath}' does not exist.");
    return;
}

// Get all JPG files in the directory
var pdfFiles = Directory.GetFiles(folderPath, "*.jpg");

foreach (var file in pdfFiles)
{
    // Read the barcode
    var results = BarcodeReader.Read(file);

    if (results.Any())
    {
        Console.WriteLine($"Barcode(s) found in: {Path.GetFileName(file)}");
        foreach (var result in results)
        {
            Console.WriteLine($"  Value: {result.Value}, Type: {result.BarcodeType}");

        }
    }
}

stopwatch.Stop();

// Print number of images the barcode reader could decode
Console.WriteLine($" Max parallel threads of {maxParallelThreads} with {stopwatch.Elapsed.TotalSeconds:F2}s");

Imports IronBarCode
Imports System
Imports System.Diagnostics
Imports System.IO
Imports System.Linq

' Set the max parallel threads to the number of processor cores
Dim maxParallelThreads As Integer = Environment.ProcessorCount

Dim optionsFaster As New BarcodeReaderOptions With {
    .Multithreaded = True,
    .MaxParallelThreads = maxParallelThreads,
    .ExpectMultipleBarcodes = True
}

' Start timing the process
Dim stopwatch As Stopwatch = Stopwatch.StartNew()
' Dynamically get the "images" folder in the current directory
Dim folderPath As String = Path.Combine(Directory.GetCurrentDirectory(), "images")

' Check if directory exists to prevent crashes
If Not Directory.Exists(folderPath) Then
    Console.WriteLine($"Error: The directory '{folderPath}' does not exist.")
    Return
End If

' Get all JPG files in the directory
Dim pdfFiles As String() = Directory.GetFiles(folderPath, "*.jpg")

For Each file As String In pdfFiles
    ' Read the barcode
    Dim results = BarcodeReader.Read(file)

    If results.Any() Then
        Console.WriteLine($"Barcode(s) found in: {Path.GetFileName(file)}")
        For Each result In results
            Console.WriteLine($"  Value: {result.Value}, Type: {result.BarcodeType}")
        Next
    End If
Next

stopwatch.Stop()

' Print number of images the barcode reader could decode
Console.WriteLine($" Max parallel threads of {maxParallelThreads} with {stopwatch.Elapsed.TotalSeconds:F2}s")