Read pdf using ItextSharp

Hello

Friends

I am going to show how you can use Itextsharp to read a table or paragraph from pdf

In last article I have shown how to download and include itextsharp in project How to download ItextSharp 

Follow this step to read a pdf using Itextsharp

Step1: Create a project and include a dll reference.

Step 2: I have created folder name PDF to store pdf file, through which we will be read PDFs file.

Step 3: on code behind we have created a method getParagraphByCoOrdinate which read your pdf

public string[] getParagraphByCoOrdinate(string filepath,int pageno,int cordinate1,int coordinate2,int coordinate3,int coordinate4)

    {

        PdfReader reader = new PdfReader(filepath);

        iTextSharp.text.Rectangle rect = new iTextSharp.text.Rectangle(cordinate1, coordinate2, coordinate3, coordinate4);

        RenderFilter[] renderFilter = new RenderFilter[1];

        renderFilter[0] = new RegionTextRenderFilter(rect);

        ITextExtractionStrategy textExtractionStrategy = new FilteredTextRenderListener(new LocationTextExtractionStrategy(), renderFilter);

        string text = PdfTextExtractor.GetTextFromPage(reader,pageno, textExtractionStrategy);

        string[] words = text.Split('\n');

        return words;

   

    }

This method takes six parameters

 File path: path to pdf file

 Page no: pdf page number to which page we want to read.

We are going to read pdf by creating a rectangle or for a particular area for that we are Rectangle constructor which takes four values

        public Rectangle(float llx, float lly, float urx, float ury);

llx - lower left x

lly - lower left y

urx - upper right x

ury - upper right y

Now on page load we are going to pass these values

 protected void Page_Load(object sender, EventArgs e)

    {

        //code to get file path

        string filepath = Server.MapPath("PDF");

        filepath = filepath + "\\ak2.pdf";

        // passing cordinate to  method

        string[] strarray = getParagraphByCoOrdinate(filepath, 1, 50, 850, 450, 600);

        //code to display data on webapge

        Response.Write("<b>Table 1</b> <br/>");

        foreach (string str in strarray)

        {

            Response.Write(str + "<br/>");

        }

       

        string[] strarray1 = getParagraphByCoOrdinate(filepath, 1, 50, 590, 450, 505);

        Response.Write("<b>Table 2</b> <br/>");

        foreach (string str in strarray1)

        {

            Response.Write(str + "<br/>");

        }

    }

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You can download code