EVO HTML to PDF Converter

Access a HTML Page Using GET and POST HTTP Methods

EVO HTML to PDF Converter for .NET Documentation

EVO HTML to PDF Converter allows you to access a HTML page using both GET and POST HTTP Methods. By default the GET method is used by converter to access the HTML page. When you access the page using GET method you can transmit the parameters in query string. When you access the page using the POST method you transmit the parameters in HTTP request form.

When you add one or more items to HtmlToPdfConverterHttpPostFields collection the converter will automatically use the POST HTTP method to access the HTML page to convert.

Code Sample - Access a HTML Page Using GET and POST HTTP Methods
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protected void convertToPdfButton_Click(object sender, EventArgs e)
{
    // 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;

    string param1Name = param1NameTextBox.Text.Length > 0 ? param1NameTextBox.Text : "param1";
    string param1Value = param1ValueTextBox.Text.Length > 0 ? param1ValueTextBox.Text : "Value 1";

    string param2Name = param2NameTextBox.Text.Length > 0 ? param2NameTextBox.Text : "param2";
    string param2Value = param2ValueTextBox.Text.Length > 0 ? param2ValueTextBox.Text : "Value 2";

    string param3Name = param3NameTextBox.Text.Length > 0 ? param3NameTextBox.Text : "param3";
    string param3Value = param3ValueTextBox.Text.Length > 0 ? param3ValueTextBox.Text : "Value 3";

    string param4Name = param4NameTextBox.Text.Length > 0 ? param4NameTextBox.Text : "param4";
    string param4Value = param4ValueTextBox.Text.Length > 0 ? param4ValueTextBox.Text : "Value 4";

    string param5Name = param5NameTextBox.Text.Length > 0 ? param5NameTextBox.Text : "param5";
    string param5Value = param5ValueTextBox.Text.Length > 0 ? param5ValueTextBox.Text : "Value 5";

    string urlToConvert = urlTextBox.Text;

    if (postMethodRadioButton.Checked)
    {
        htmlToPdfConverter.HttpPostFields.Add(param1Name, param1Value);
        htmlToPdfConverter.HttpPostFields.Add(param2Name, param2Value);
        htmlToPdfConverter.HttpPostFields.Add(param3Name, param3Value);
        htmlToPdfConverter.HttpPostFields.Add(param4Name, param4Value);
        htmlToPdfConverter.HttpPostFields.Add(param5Name, param5Value);
    }
    else
    {
        Uri getMethodUri = new Uri(urlTextBox.Text);

        string query = getMethodUri.Query.Length > 0 ? "&" : "?" + String.Format("{0}={1}", param1Name, param1Value);
        query += String.Format("&{0}={1}", param2Name, param2Value);
        query += String.Format("&{0}={1}", param3Name, param3Value);
        query += String.Format("&{0}={1}", param4Name, param4Value);
        query += String.Format("&{0}={1}", param5Name, param5Value);

        urlToConvert = urlTextBox.Text + query;
    }

    // Convert the HTML page to a PDF document in a memory buffer
    byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlToConvert);

    // 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=GET_and_POST.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();
}