MemoryStream do PDF C#

using IronPdf;
using System.IO;

// Read PDF file as stream
var fileByte = File.ReadAllBytes("sample.pdf");

// Instantiate PDF object from stream
PdfDocument pdf = new PdfDocument(fileByte);

using IronPdf;
using System.IO;

// Read PDF file as stream
var fileByte = File.ReadAllBytes("sample.pdf");

// Instantiate PDF object from stream
PdfDocument pdf = new PdfDocument(fileByte);

using IronPdf;
using System.IO;
using System.Net.Http;

// Example 1: From FileStream
using (FileStream fileStream = File.OpenRead("document.pdf"))
{
    var pdfFromFileStream = new PdfDocument(fileStream);
}

// Example 2: From MemoryStream
byte[] pdfBytes = GetPdfBytesFromDatabase(); // Your method to get PDF bytes
using (MemoryStream memoryStream = new MemoryStream(pdfBytes))
{
    var pdfFromMemoryStream = new PdfDocument(memoryStream);
}

// Example 3: From HTTP Response
using (HttpClient client = new HttpClient())
{
    byte[] pdfData = await client.GetByteArrayAsync("https://example.com/document.pdf");
    var pdfFromHttp = new PdfDocument(pdfData);
}

using IronPdf;
using System.IO;
using System.Net.Http;

// Example 1: From FileStream
using (FileStream fileStream = File.OpenRead("document.pdf"))
{
    var pdfFromFileStream = new PdfDocument(fileStream);
}

// Example 2: From MemoryStream
byte[] pdfBytes = GetPdfBytesFromDatabase(); // Your method to get PDF bytes
using (MemoryStream memoryStream = new MemoryStream(pdfBytes))
{
    var pdfFromMemoryStream = new PdfDocument(memoryStream);
}

// Example 3: From HTTP Response
using (HttpClient client = new HttpClient())
{
    byte[] pdfData = await client.GetByteArrayAsync("https://example.com/document.pdf");
    var pdfFromHttp = new PdfDocument(pdfData);
}

using IronPdf;
using System.IO;

// Create or load a PDF document
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is a PDF from HTML</p>");

// Export to MemoryStream
using (MemoryStream memoryStream = pdf.Stream)
{
    // Example: Convert to byte array for database storage
    byte[] pdfBytes = pdf.BinaryData;
    
    // Example: Reset position to read from beginning
    memoryStream.Position = 0;
    
    // Use the stream as needed (e.g., return in web response)
}

using IronPdf;
using System.IO;

// Create or load a PDF document
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is a PDF from HTML</p>");

// Export to MemoryStream
using (MemoryStream memoryStream = pdf.Stream)
{
    // Example: Convert to byte array for database storage
    byte[] pdfBytes = pdf.BinaryData;
    
    // Example: Reset position to read from beginning
    memoryStream.Position = 0;
    
    // Use the stream as needed (e.g., return in web response)
}

using IronPdf;
using System.Collections.Generic;
using System.IO;

public static byte[] MergePdfsFromMemory(List<byte[]> pdfBytesList)
{
    List<PdfDocument> pdfs = new List<PdfDocument>();
    
    // Load all PDFs from byte arrays
    foreach (var pdfBytes in pdfBytesList)
    {
        pdfs.Add(new PdfDocument(pdfBytes));
    }
    
    // Merge PDFs
    PdfDocument merged = PdfDocument.Merge(pdfs);
    
    // Export merged PDF to byte array
    using (MemoryStream ms = new MemoryStream())
    {
        merged.SaveAs(ms);
        return ms.ToArray();
    }
}

using IronPdf;
using System.Collections.Generic;
using System.IO;

public static byte[] MergePdfsFromMemory(List<byte[]> pdfBytesList)
{
    List<PdfDocument> pdfs = new List<PdfDocument>();
    
    // Load all PDFs from byte arrays
    foreach (var pdfBytes in pdfBytesList)
    {
        pdfs.Add(new PdfDocument(pdfBytes));
    }
    
    // Merge PDFs
    PdfDocument merged = PdfDocument.Merge(pdfs);
    
    // Export merged PDF to byte array
    using (MemoryStream ms = new MemoryStream())
    {
        merged.SaveAs(ms);
        return ms.ToArray();
    }
}

using IronPdf;
using System.IO;

// Load PDF from memory
byte[] unsecuredPdfBytes = GetPdfFromDatabase();
PdfDocument pdf = new PdfDocument(unsecuredPdfBytes);

// Apply security settings
pdf.SecuritySettings.UserPassword = "user123";
pdf.SecuritySettings.OwnerPassword = "owner456";
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.NoPrint;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;

// Export secured PDF to memory
byte[] securedPdfBytes = pdf.BinaryData;
// Store or transmit secured PDF bytes

using IronPdf;
using System.IO;

// Load PDF from memory
byte[] unsecuredPdfBytes = GetPdfFromDatabase();
PdfDocument pdf = new PdfDocument(unsecuredPdfBytes);

// Apply security settings
pdf.SecuritySettings.UserPassword = "user123";
pdf.SecuritySettings.OwnerPassword = "owner456";
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.NoPrint;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;

// Export secured PDF to memory
byte[] securedPdfBytes = pdf.BinaryData;
// Store or transmit secured PDF bytes