Thêm Văn bản và Hình ảnh vào Đầu trang PDF trong C#

using System;
using System.Collections.Generic;
using System.IO;
using Aspose.Pdf.Cloud.Sdk.Api;
using Aspose.Pdf.Cloud.Sdk.Client;
using Aspose.Pdf.Cloud.Sdk.Model;

class Program
{
    static void Main()
    {
        // -------------------------------------------------
        // Configuration – replace with your actual App SID and API Key
        // -------------------------------------------------
        var config = new Configuration
        {
            ApiKey = new Dictionary<string, string> { { "api_key", "YOUR_API_KEY" } },
            Host = "https://api.aspose.cloud"
        };
        var pdfApi = new PdfApi(config);

// -------------------------------------------------
        // File names (local)
        // -------------------------------------------------
        string localPdfPath = "input.pdf";
        string localImagePath = "headerImage.png";
        string outputPdfPath = "output.pdf";

// -------------------------------------------------
        // Upload PDF to Aspose Cloud storage
        // -------------------------------------------------
        using (var pdfStream = File.OpenRead(localPdfPath))
        {
            pdfApi.UploadFile(Path.GetFileName(localPdfPath), pdfStream);
        }

// -------------------------------------------------
        // Upload image to Aspose Cloud storage
        // -------------------------------------------------
        using (var imgStream = File.OpenRead(localImagePath))
        {
            pdfApi.UploadFile(Path.GetFileName(localImagePath), imgStream);
        }

// -------------------------------------------------
        // Build HeaderFooter object with text and image
        // -------------------------------------------------
        var headerFooter = new HeaderFooter
        {
            // Text part
            TextState = new TextState
            {
                Value = "Confidential Document",
                FontSize = 14,
                Font = "Helvetica",
                FontStyle = FontStyles.Bold,
                ForegroundColor = new Color { A = 255, R = 255, G = 0, B = 0 } // Red color
            },
            // Image part
            Image = new Image
            {
                File = Path.GetFileName(localImagePath), // reference uploaded image
                Width = 100,
                Height = 30,
                HorizontalAlignment = HorizontalAlignment.Center,
                Margin = new MarginInfo { Top = 5, Bottom = 5, Left = 5, Right = 5 }
            },
            // Header margin (optional)
            Margin = new MarginInfo { Top = 10, Bottom = 0, Left = 0, Right = 0 }
        };

// -------------------------------------------------
        // Apply header to all pages of the PDF
        // -------------------------------------------------
        pdfApi.PutHeaderFooter(Path.GetFileName(localPdfPath), headerFooter);

// -------------------------------------------------
        // Download the updated PDF
        // -------------------------------------------------
        using (var resultStream = pdfApi.GetDocument(Path.GetFileName(localPdfPath)))
        using (var fileStream = File.Create(outputPdfPath))
        {
            resultStream.CopyTo(fileStream);
        }

// -------------------------------------------------
        // Optional: clean up uploaded files from cloud storage
        // -------------------------------------------------
        pdfApi.DeleteFile(Path.GetFileName(localPdfPath));
        pdfApi.DeleteFile(Path.GetFileName(localImagePath));
    }
}

# 1. Obtain an access token (replace YOUR_CLIENT_ID and YOUR_CLIENT_SECRET)
curl -X POST "https://api.aspose.cloud/connect/token" \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d "grant_type=client_credentials&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET"

# 2. Upload the source PDF
curl -X PUT "https://api.aspose.cloud/v3.0/pdf/storage/file/input.pdf" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: application/pdf" \
  --data-binary "@input.pdf"

# 3. Upload the header image (PNG)
curl -X PUT "https://api.aspose.cloud/v3.0/pdf/storage/file/headerImage.png" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: image/png" \
  --data-binary "@headerImage.png"

# 4. Apply header with text and image
curl -X PUT "https://api.aspose.cloud/v3.0/pdf/input.pdf/headerfooter" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
        "TextState": {
            "Value": "Confidential Document",
            "FontSize": 14,
            "Font": "Helvetica",
            "FontStyle": "Bold",
            "ForegroundColor": { "A":255,"R":255,"G":0,"B":0 }
        },
        "Image": {
            "File": "headerImage.png",
            "Width": 100,
            "Height": 30,
            "HorizontalAlignment": "Center",
            "Margin": { "Top":5,"Bottom":5,"Left":5,"Right":5 }
        },
        "Margin": { "Top":10,"Bottom":0,"Left":0,"Right":0 }
      }'

# 5. Download the updated PDF
curl -X GET "https://api.aspose.cloud/v3.0/pdf/input.pdf" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -o output.pdf

   dotnet add package Aspose.PDF-Cloud