How to display multiples images from root directory to 1 pdf file c#

Jes Sie

4y1.3k.NET

Hello everyone. I have a program where users can upload files and save files to the root directory and save the path in the database. Now, my client wants to display all the uploaded files in 1 pdf. How will I do that?

I found a resource where I can merge all files into a PDF But I don't know how to use it. Attached is the resource that I found.

Thank you for any help.

7 Replies

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Jes Sie4y ago
I found an answer to my problem, I added the NavigateUrl to the hyperlink control
<asp:HyperLink runat="server" CssClass="btn btn-primary" ID="hlYearbook"
                                                   NavigateUrl='<%# DataBinder.Eval(Container.DataItem,"FilePath") %>' Visible="true" Text='<%# Eval("SchoolYear") %>'
                                                   Width="190px" Height="100px" Target="_blank">asp:HyperLink>
Marvin Reid4y ago
You have a few options you can use for this; however, a problem you'll likely run into will be related to the file formats you have stored. In particular, you'll need to ensure you are able to programmatically handle the different formats as most ways of merging files only work between a small scope of file formats. The LEADDocument class will allow you to merge between around 150 file formats. Here is a tutorial which will allow you to merge the files to a PDF.
https://www.leadtools.com/help/sdk/v22/tutorials/dotnet-console-merge-documents-with-leaddocument.html
Jes Sie4y ago
Hi Rij,

I fetch my files from my database using the code below
public static List DisplayRSDocumentsMgtApproval(string rs_no)
        {
            RsDocumentMgtApproval[] allDocuments = null;
            List list = new List();
            using (SqlConnection con = DBCS.GetDbCon())
            {
                SqlCommand cmd = new SqlCommand("SELECT FilePath FROM [dbo].[rs_Documents] WHERE rs_no = @rs_no;", con);
                cmd.CommandType = CommandType.Text;
                cmd.Parameters.AddWithValue("@rs_no", rs_no);
                SqlDataReader rdr = cmd.ExecuteReader();
                while (rdr.Read())
                {
                    list.Add(new RsDocumentMgtApproval { FilePath = rdr.GetString(0) });
                    allDocuments = list.ToArray();
                }
            }
            return list;
        }
But, when I call it from my code behind, I got an error
string rs_no = lnkRs_No.Text;

           string[] fileArray = RequisitionSlipDataAccess.DisplayRSDocumentsMgtApproval(rs_no);
Cannot implicitly convert type System.Collections.Generic.List<RequisitionSlipDataAccess> to string[]
Jes Sie4y ago
Thank you all for your response.
Satya Karki4y ago
Check this article for example.
https://www.c-sharpcorner.com/article/merge-pdf/
Rijwan Ansari4y ago
You can try somethings like this.
First, you can get all the files location from database and set a string array. Then call this function.
private static void MergePDF(string[] fileArray)
       {

           PdfReader reader = null;
           Document sourceDocument = null;
           PdfCopy pdfCopyProvider = null;
           PdfImportedPage importedPage;
           string outputPdfPath = @"E:/newFile.pdf";

           sourceDocument = new Document();
           pdfCopyProvider = new PdfCopy(sourceDocument, new System.IO.FileStream(outputPdfPath, System.IO.FileMode.Create));

           //output file Open
           sourceDocument.Open();


           //files list wise Loop
           for (int f = 0; f < fileArray.Length - 1; f++)
           {
               int pages = TotalPageCount(fileArray[f]);

               reader = new PdfReader(fileArray[f]);
               //Add pages in new file
               for (int i = 1; i <= pages; i++)
               {
                   importedPage = pdfCopyProvider.GetImportedPage(reader, i);
                   pdfCopyProvider.AddPage(importedPage);
               }

               reader.Close();
           }
           //save the output file
           sourceDocument.Close();
       }

       private static int TotalPageCount(string file)
       {
           using (StreamReader sr = new StreamReader(System.IO.File.OpenRead(file)))
           {
               Regex regex = new Regex(@"/Type\s*/Page[^s]");
               MatchCollection matches = regex.Matches(sr.ReadToEnd());

               return matches.Count;
           }
       }
Leon D4y ago
You can use Spire.PDF libray to convert/insert images into PDF.

Check the following articles:

https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/C-/VB.NET-Convert-Image-to-PDF.html

https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/How-to-Create-a-PDF-Document-and-Insert-an-Image.html