掌握.NET 10中的Async/Await C#：可擴展應用程式的基本指南

using CurlDotNet;

// Simply paste the command string
var response = await Curl.ExecuteAsync("curl https://api.github.com/users/octocat");

// Access the data
Console.WriteLine(response.Body);

Imports CurlDotNet

' Simply paste the command string
Dim response = Await Curl.ExecuteAsync("curl https://api.github.com/users/octocat")

' Access the data
Console.WriteLine(response.Body)

var response = await Curl.GetAsync("https://api.example.com/data")
    .WithHeader("Authorization", "Bearer " + Environment.GetEnvironmentVariable("API_KEY"))
    .WithTimeout(TimeSpan.FromSeconds(30))
    .ExecuteAsync();

Dim response = Await Curl.GetAsync("https://api.example.com/data") _
    .WithHeader("Authorization", "Bearer " & Environment.GetEnvironmentVariable("API_KEY")) _
    .WithTimeout(TimeSpan.FromSeconds(30)) _
    .ExecuteAsync()

using CurlDotNet;
using IronPdf;

// 1. Use CurlDotNet to handle the complex transport
// We use -k to allow insecure SSL (common in legacy internal apps)
var curlCommand = "curl -k https://internal-billing.local/invoice/1234 -H 'X-Dept: Sales'";
var response = await Curl.ExecuteAsync(curlCommand);

if (response.IsSuccess)
{
    // 2. Pass the raw bytes directly to IronPDF
    // IronPDF renders the PDF from the downloaded data
    var pdfDocument = PdfDocument.FromPdf(response.BodyBytes);

    // 3. Apply a watermark and save
    pdfDocument.ApplyWatermark("CONFIDENTIAL", 30, VerticalAlignment.Middle, HorizontalAlignment.Center);
    pdfDocument.SaveAs("Processed_Invoice.pdf");

    Console.WriteLine("Invoice downloaded and secured via IronPDF.");
}

Imports CurlDotNet
Imports IronPdf

' 1. Use CurlDotNet to handle the complex transport
' We use -k to allow insecure SSL (common in legacy internal apps)
Dim curlCommand As String = "curl -k https://internal-billing.local/invoice/1234 -H 'X-Dept: Sales'"
Dim response = Await Curl.ExecuteAsync(curlCommand)

If response.IsSuccess Then
    ' 2. Pass the raw bytes directly to IronPDF
    ' IronPDF renders the PDF from the downloaded data
    Dim pdfDocument = PdfDocument.FromPdf(response.BodyBytes)

    ' 3. Apply a watermark and save
    pdfDocument.ApplyWatermark("CONFIDENTIAL", 30, VerticalAlignment.Middle, HorizontalAlignment.Center)
    pdfDocument.SaveAs("Processed_Invoice.pdf")

    Console.WriteLine("Invoice downloaded and secured via IronPDF.")
End If

using CurlDotNet;
using IronOcr;

// 1. Fetch the image using a specific browser User-Agent to bypass blocks
var imgResponse = await Curl.GetAsync("https://site.com/protected-captcha.png")
    .WithUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64)")
    .ExecuteAsync();

// 2. Use IronOCR to read text from the file bytes
var ocr = new IronTesseract();
using (var input = new OcrInput())
{
    input.AddImage(imgResponse.BodyBytes);
    var result = ocr.Read(input);

    // 3. Output the extracted string value
    Console.WriteLine($"OCR Result: {result.Text}");
}

Imports CurlDotNet
Imports IronOcr

' 1. Fetch the image using a specific browser User-Agent to bypass blocks
Dim imgResponse = Await Curl.GetAsync("https://site.com/protected-captcha.png") _
    .WithUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64)") _
    .ExecuteAsync()

' 2. Use IronOCR to read text from the file bytes
Dim ocr = New IronTesseract()
Using input = New OcrInput()
    input.AddImage(imgResponse.BodyBytes)
    Dim result = ocr.Read(input)

    ' 3. Output the extracted string value
    Console.WriteLine($"OCR Result: {result.Text}")
End Using