Generate the invoice receipt using ASP.NET

First include these references like
 

using iTextSharp.text;

using iTextSharp.text.pdf;

using iTextSharp.text.html.simpleparser;

 

protected void CreatePdf_Click(object sender, EventArgs e)

    {

        var document = new Document(PageSize.A4, 50, 50, 25, 25);
 

        // Create a new PdfWrite object, writing the output to a MemoryStream

        var output = new MemoryStream();

        var writer = PdfWriter.GetInstance(document, output);
 

        // Open the Document for writing

        document.Open();

 

        // Read in the contents of the Receipt.htm HTML template file

        string contents = File.ReadAllText(Server.MapPath("~/PdfTemplate/Receipt.htm"));

        // Replace the placeholders with the user-specified text

        var itemsTable = @"<table><tr><th style=""font-weight: bold"">Product #</th><th style=""font-weight: bold"">Qty</th><th style=""font-weight: bold"">Price</th><th style=""font-weight: bold"">Total Amount</th></tr>";

        

        SqlConnection con = new SqlConnection("server=192.168.1.50;database=Qwizo_Dev;user id=QwizoDev;password=Qwizo@123");

        con.Open();

        string query = "select *from TestUser";

        string query1 = "select *from TestProduct";        

        

        using (SqlCommand cmd = new SqlCommand(query, con))

        {

            using (SqlDataReader dr = cmd.ExecuteReader())

            {

                if (dr.Read())

                {

                    contents = contents.Replace("[Name]", dr[1].ToString() + " " + dr[2].ToString());

                    contents = contents.Replace("[Address]", dr[3].ToString());

                    contents = contents.Replace("[Name1]", dr[1].ToString() + " " + dr[2].ToString());

                    contents = contents.Replace("[Address1]", dr[3].ToString());

                }

            }

        }

 

        using (SqlCommand cmd = new SqlCommand(query1, con))

        {

            using (SqlDataReader dr = cmd.ExecuteReader())

            {

                if (dr.Read())

                {

                    itemsTable += string.Format("<tr><td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td></tr>",

                                               dr[0].ToString(), dr[1].ToString(), dr[2].ToString(), dr[3].ToString());

                }

            }

        }

           

        itemsTable += "</table>";

 

        contents = contents.Replace("[ITEMS]", itemsTable);

 

        var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);

        foreach (var htmlElement in parsedHtmlElements)

            document.Add(htmlElement as IElement);
 

        // You can add additional elements to the document. Let's add an image in the upper right corner

        var logo = iTextSharp.text.Image.GetInstance(Server.MapPath("~/Images/PPIC_Logo.png"));

        var logo1 = iTextSharp.text.Image.GetInstance(Server.MapPath("~/Images/PPIC_Logo.png"));

        logo.SetAbsolutePosition(440, 800);

        

        document.Add(logo);

      

        document.Close();

 

        Response.ContentType = "application/pdf";

        Response.AddHeader("Content-Disposition", string.Format("inline;filename=MeeraReceipt.pdf"));

        Response.BinaryWrite(output.ToArray());

        con.Close();

        

    }