EVO HTML to PDF Converter

Convert a HTML Page to PDF in Same Session

EVO HTML to PDF Converter for .NET Documentation

EVO HTML to PDF Converter allows you to convert another page of the same application in the same ASP.NET session. The values you filled in HTML form will be saved in session object and used in the HTML page converted to PDF.

Code Sample - Convert a HTML Page to PDF in Same Session
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protected void convertToPdfButton_Click(object sender, EventArgs e)
{
    // Save variables in Session object
    Session["firstName"] = firstNameTextBox.Text;
    Session["lastName"] = lastNameTextBox.Text;
    Session["gender"] = maleRadioButton.Checked ? "Male" : "Female";
    Session["haveCar"] = haveCarCheckBox.Checked;
    Session["carType"] = carTypeDropDownList.SelectedValue;
    Session["comments"] = commentsTextBox.Text;

    // Execute the Display_Session_Variables.aspx page and get the HTML string 
    // rendered by this page
    TextWriter outTextWriter = new StringWriter();
    Server.Execute("Display_Session_Variables.aspx", outTextWriter);

    string htmlStringToConvert = outTextWriter.ToString();

    // Create a HTML to PDF converter object with default settings
    HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();

    // Set license key received after purchase to use the converter in licensed mode
    // Leave it not set to use the converter in demo mode
    htmlToPdfConverter.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

    // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
    // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
    htmlToPdfConverter.ConversionDelay = 2;

    // Use the current page URL as base URL
    string baseUrl = HttpContext.Current.Request.Url.AbsoluteUri;

    // Convert the page HTML string to a PDF document in a memory buffer
    byte[] outPdfBuffer = htmlToPdfConverter.ConvertHtml(htmlStringToConvert, baseUrl);

    // Send the PDF as response to browser

    // Set response content type
    Response.AddHeader("Content-Type", "application/pdf");

    // Instruct the browser to open the PDF file as an attachment or inline
    Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Convert_Page_in_Same_Session.pdf; size={0}", outPdfBuffer.Length.ToString()));

    // Write the PDF document buffer to HTTP response
    Response.BinaryWrite(outPdfBuffer);

    // End the HTTP response and stop the current page processing
    Response.End();
}
Code Sample - Display Session Variables in Converted HTML Page
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protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        firstNameLabel.Text = Session["firstName"] != null ? (String)Session["firstName"] : String.Empty;
        lastNameLabel.Text = Session["lastName"] != null ? (String)Session["lastName"] : String.Empty;
        genderLabel.Text = Session["gender"] != null ? (String)Session["gender"] : String.Empty;

        bool iHaveCar = Session["haveCar"] != null ? (bool)Session["haveCar"] : false;
        haveCarLabel.Text = iHaveCar ? "Yes" : "No";
        carTypePanel.Visible = iHaveCar;
        carTypeLabel.Text = iHaveCar && Session["carType"] != null ? (String)Session["carType"] : String.Empty;

        commentsLabel.Text = Session["comments"] != null ? (String)Session["comments"] : String.Empty;
    }
}