How to Generate Pdf Invoice Dynamically in Asp.Net

Description:-

Here we will Create Invoice File as Pdf file dynamically we will Generate Pdf file as Design with tabular format in dot net. Here we create Dynamically Data Table and Add Some Rows in Table for Checking in Pdf Format. Using StringWriter, HtmlTextWriter, and StringBuilder Generate Pdf file with Some Design in Html Controls Dynamically.

Default.aspx:-

In your Webpage Drag and Drop Button Control and Generate Click event.

Now go to Code behind and Code in Generated button Click Event and Code for Generate Pdf File Dynamically in dot net.

protected void GenerateInvoicePDF(object sender, EventArgs e)
{
  //Dummy data for Invoice (Bill).
  string CustomerName = "Umesh Patel";
  string companyName = "ASPCodder";
  int CustomerID = 1243;
  DataTable dt = new DataTable();
  dt.Columns.AddRange(new DataColumn[5] {
      new DataColumn("Item Id", typeof(string)),
      new DataColumn("Item Name", typeof(string)),
      new DataColumn("Price", typeof(int)),
      new DataColumn("Quantity",  typeof(int)),
      new DataColumn("Total",  typeof(int))});
  dt.Rows.Add(5001, "Wires", 150, 15, 7500);
  dt.Rows.Add(5005, "Cables", 500, 3, 1500);
  dt.Rows.Add(5003, "Pins", 20, 30, 6000);
  dt.Rows.Add(5002, "Lan Wires", 50, 24, 1200);

  using (StringWriter sw = new StringWriter())
  {
    using (HtmlTextWriter hw = new HtmlTextWriter(sw))
    {
      StringBuilder sb = new StringBuilder();

      //Generate Invoice (Bill) Header.
      sb.Append("<table width='100%' cellspacing='0' cellpadding='2'>");
      sb.Append("<tr><td align='center' style='background-color: Blue;color:#ffffff' colspan = '2'><b>CUSTOMER ORDER SHEET</b></td></tr>");
      sb.Append("<tr><td colspan = '2'></td></tr>");

      sb.Append("<tr><td><b>Customer Name: </b>");
      sb.Append(CustomerName);
      sb.Append("</td><td align = 'right'><b>Date: </b>");
      sb.Append(DateTime.Now);
      sb.Append(" </td></tr>");
      sb.Append("<tr><td colspan = '2'>");
      sb.Append("</td></tr>");
      sb.Append("<br />");

      sb.Append("<tr><td><b>Order No: </b>");
      sb.Append(CustomerID);
      sb.Append("</td><td align = 'right'>");
      sb.Append(" </td></tr>");
      sb.Append("<tr><td colspan = '2'><b>Company Name: </b>");
      sb.Append(companyName);
      sb.Append("</td></tr>");
      sb.Append("</table>");
      sb.Append("<br />");

      //Generate Invoice (Bill) Items Grid.
      sb.Append("<table border = '1'>");
      sb.Append("<tr>");
      foreach (DataColumn column in dt.Columns)
      {
        sb.Append("<th style = 'background-color: Blue;color:#ffffff'>");
        sb.Append(column.ColumnName);
        sb.Append("</th>");
      }
      sb.Append("</tr>");
      foreach (DataRow row in dt.Rows)
      {
        sb.Append("<tr>");
        foreach (DataColumn column in dt.Columns)
        {
          sb.Append("<td>");
          sb.Append(row[column]);
          sb.Append("</td>");
        }
        sb.Append("</tr>");
      }
      sb.Append("<tr><td align = 'right' colspan = '");
      sb.Append(dt.Columns.Count - 1);
      sb.Append("'>Total</td>");
      sb.Append("<td>");
      sb.Append(dt.Compute("sum(Total)", ""));
      sb.Append("</td>");
      sb.Append("</tr></table>");

      //Export HTML String as PDF.
      StringReader sr = new StringReader(sb.ToString());
      Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
      HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
      PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
      pdfDoc.Open();
      htmlparser.Parse(sr);
      pdfDoc.Close();
      Response.ContentType = "application/pdf";
      Response.AddHeader("content-disposition", "attachment;filename=" + CustomerName + "-" + CustomerID + ".pdf");
      Response.Cache.SetCacheability(HttpCacheability.NoCache);
      Response.Write(pdfDoc);
      Response.End();
    }
  }
}