C# MemoryStream to File | Convert PDF File to MemoryStream C#

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You can read all details at:Convert MemoryStream to PDF File or PDF File to MemoryStream in C# VB.NET

FileToMemoryStream.cs

var inputFile = dataDir + @"Test.pdf";
string fnameppt = dataDir + "Test.pptx";
{
    Aspose.Pdf.Document pdfDoc = new Aspose.Pdf.Document(inputFile);
    using (MemoryStream pptStream = new MemoryStream())
    {
        pdfDoc.Save(pptStream, Aspose.Pdf.SaveFormat.Pptx);
        //File.WriteAllBytes(fnameppt, pptStream.ToArray());
    }
}

MemoryStreamToFile.cs

// Specify HtmlLoadOptions to load input file
HtmlLoadOptions options = new HtmlLoadOptions();
var fileName = dataDir + "Test.html";
string pdfFileName = dataDir + "Test.pdf";
Document document = null;

// Load input HTML file in MemoryStream
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(File.ReadAllText(fileName))))
{
    // Initialize a doument from input MemoryStream
    document = new Document(ms, options);
    // Save the MemoryStream to PDF file
    document.Save(pdfFileName);
}