What is the best way to upload lengthy text input by the user to an asp.net generic handler?
What is the best way to upload lengthy text input by the user to an asp.net generic handler?
Consider implementing some jQuery code similar to the example below:
jQuery(document).ready(function($){
$('#button-id-to-submit-info-to-the-handler').on('click', function(ev) {
ev.preventDefault();
//Enclose your message in a certain way
//if you intend on adding more functionalities
//to your handler later on
var $xml = $('<root />')
.append($('<msg />', {
text: escape($('#id-of-your-textarea-that-has-the-text').val())
}
));
$.ajax({
type:'POST',
url:'/path/to-your/handler.ashx',
data: $('<nothing />').append($xml).html(),
success: function(data) {
$('body').prepend($('<div />', { text: $(data).find('responsetext').text() }));
}
});
});
});
Make sure to include the following code in your handler:
public class YourHandler : IHttpHandler
{
public void ProcessRequest(HttpContext ctx)
{
//Respond with XML
//Set up a response template
ctx.Response.ContentType = "text/xml";
String rspBody = @"<?xml version=\""1.0\"" encoding=\""utf-8\"" standalone=\""yes\""?>
<root>
<responsetext>{0}</responsetext>
</root>";
//Retrieve the XML document created using jquery
//and load it into an XmlDocument
XmlDocument xDoc = new XmlDocument();
using (System.IO.StreamReader sr = new StreamReader(ctx.Request.InputStream))
{
String xml = sr.ReadToEnd();
xDoc.LoadXml(xml);
}
//Locate your <msg> node and decode the text
XmlNode msg = xDoc.DocumentElement.SelectSingleNode("/msg");
String msgText = HttpUtility.UrlDecode(msg.InnerXml);
if (!String.IsNullOrEmpty(msgText))
{
//Success!!
//Proceed with your intended actions
//and send a success response
ctx.Response.Write(String.Format(rspBody, "SUCCESS"));
}
else
{
ctx.Response.Write(String.Format(rspBody, "FAIL: msgText was Empty!"));
}
}
}
After reviewing the code you provided, it appears that the variable holding your text is referred to as data in your JavaScript, while you are searching for file in your handler.
You may want to try using: context.Request.Form["data"] within your handler function.
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