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How can I insert an element to the bottom of a specific page in iText7?

I'm exploring different options for .NET PDF libraries. One of my requirements is to place a box at the bottom of the first page and if any of the content reaches the box, it should overflow onto the next page.
For example:
Shown above, paragraph 7 would normally take up some of the space that's occupied by the "reserved" area. Instead, the part that would have taken up that space is shifted to the next page.
That image was achieved using Gembox.Document by adding the box as a footer element that only renders on the first page. However, in iText7, the examples I've seen for adding a footer (such as this one), places the content as a floating element that renders over the existing content and does not affect the layout/flow of the rest of the document.
I also tried adding a paragraph on the PageEnd event handler without the canvas (snippet below), but instead of adding it to the specified page, it's added to the end of the entire document.
public void HandleEvent(Event evt)
{
var docEvent = (PdfDocumentEvent)evt;
var page = docEvent.GetPage();
int pageNum = docEvent.GetDocument().GetPageNumber(page);
if (pageNum == 1)
{
doc.Add(new Paragraph("Testing a thing"));
}
}
Is the type of effect I'm looking for something that I can replicate using iText7?

I believe you can combine the concepts of https://github.com/itext/i7ns-samples/blob/develop/itext/itext.samples/itext/samples/sandbox/acroforms/AddExtraTable.cs and https://github.com/itext/i7ns-samples/blob/develop/itext/itext.samples/itext/samples/sandbox/events/TextFooter.cs to achieve what you need.
The idea is as follows:
reserve place for your box by making iText give the document's renderer less space for the first page
fill this box with a help of iText's end page events
Another option was suggested in How can I insert an element to the bottom of a specific page in iText7? : you can temporary call Document#setBottomMargin , since elements added via Document#add will not be placed on margins. Then, once the first page is layouted, you can set the initial margins again. This option, however, requires understanding of you layout flow, since the margins should be set only after the content of the first page is layouted.
One more suggestion: althouth event functionality is rather flexible and useful, it seems like using a sledgehammer to crack a nut. You need to call Canvas#ShowTextAligned, which could be done without any event handling. So ideally I would prefer to do the following:
handle page's layout area via an extension of DocumentRenderer
Calling Canvas#ShowTextAligned to fill the reserved box.

As you said, you are exploring different .NET PDF libraries. So I would advise PDFFlow library, which does exactly what you need.
If you have a footer, main document flow will take the rest of page area and will be automatically continued at the next page without overlaying footer.
DocumentBuilder.New()
.AddSection()
.AddParagraph("long text")
.ToSection()
.AddFooterToBothPages(40)
.AddParagraph("this a footer set for each page of this section")
.ToDocument()
.Build("result.pdf");
Here is a tutorial with code examples of using headers, footers, left/right repeating areas: AddingRepeatingArea tutorial.
Hope, this will help you :)

How to disable print and save options or hide tool bar of PDF viewer in WPF Windows Application

I have used WebBrowser control in xaml like below.
<WebBrowser x:Name="pdfviewer"/>
Also refer below for back end code
this.pdfviewer.Source = new Uri(#"C:\Users\VMH8COB\Desktop\UpdateRequestFormV2.pdf");
To hide the toobar I have used below code.
this.pdfviewer.Source = new Uri(#"C:\Users\VMH8COB\Desktop\UpdateRequestFormV2.pdf#toolbar=0");
It is working but if the escape key is pressed then adobe default side tool par will display. I want to disable print and save button else hide tool bar in all case.
I have searched for solution more than one week, but still I didn't get it.
Kindly help me on this.
Thanks.

Linking words to windows Explorer c#

Question: How can I make a list of link buttons so that when a user clicks on a link it opens it up in windows explorer.
So I have a rich text box that contains a list of all folder names and I have a list of all the folder paths. I want to be able to click on the folder name and have it linked using the path to the correct folder in windows explorer.
LinkLabel link = new LinkLabel();
link.Text = transfer2;
//link.Text = "something";
link.Name = dirName;
link.LinkClicked += new LinkLabelLinkClickedEventHandler(this.link_LinkClicked);
LinkLabel.Link data = new LinkLabel.Link();
data.LinkData = #"C:\";
link.Links.Add(data);
link.AutoSize = true;
link.Location =
this.Display_Rich_Text_Box.GetPositionFromCharIndex(this.Display_Rich_Text_Box.TextLength);
this.Display_Rich_Text_Box.Controls.Add(link);
this.Display_Rich_Text_Box.AppendText(link.Text + " ");
this.Display_Rich_Text_Box.SelectionStart = this.Display_Rich_Text_Box.TextLength;
I started with this code. I am using a foreach statement to get the folder names and path. I tried to change the name of link so it will appear to the user that they are clicking on folder A, but when you click on folder A it uses the path to open the windows explorer where the folder is from.
Any ideas or help would be greatly appreciated.
Update
I changed the code a little so now it will display, but I cant scroll down. It appears to be only on the surface as I ran something in the rich textbox and it was scrollable while the link stayed on the surface.
I also added a picture so you can see what the problem is. I scrolled a little bit so it would b easy to see.
LinkLabel link = new LinkLabel();
link.Text = dirName;
//link.Text = "something";
link.Name = transfer2;
//link.LinkClicked += new LinkLabelLinkClickedEventHandler(this.link_LinkClicked);
LinkLabel.Link data = new LinkLabel.Link();
data.LinkData = #"C:\";
link.Links.Add(data);
link.AutoSize = true;
link.Location =
this.Display_Rich_Text_Box.GetPositionFromCharIndex(this.Display_Rich_Text_Box.TextLength);
this.Display_Rich_Text_Box.Controls.Add(link);
this.Display_Rich_Text_Box.AppendText(link.Text + "\n");
this.Display_Rich_Text_Box.SelectionStart = this.Display_Rich_Text_Box.TextLength;
Update: I am trying to make essentially a list of hyperlinks so I don't think I can use linklabel as I think it is in a fixed position.

For the first part of your problem, opening Explorer, you can do this on the click event for each item in the list (or the click event of the whole list area, as I describe later):
System.Diagnostics.Process.Start("explorer.exe", "\"" + path + "\"");
(the quote/slash thing is to make sure paths with spaces work)
For the UI bits, I've never even seen LinkLabels before, so I don't know how you got on the road to that, lol! I'm not sure whether you're using WinForms or WPF but in either you'd generally want to use something like a ListBox (or a custom control that behaves/looks precisely how you want, but I'd guess you aren't ready for that). In WPF you could set the ListBox's ItemsSource to your data and DisplayMemberPath to whatever property the text comes from (if it is only strings then just don't set DisplayMemberPath). You'd then set up an event for clicking on the ListBox and respond to that by checking what item is selected and running the code above to open Explorer.
If you want to get your UI working with minimal changes, try replacing the LinkLabels with Buttons (you can style them to look like links if you want, at least in WPF) since those work the same way.

itextsharp hyperlink a image and have it open in default viewer when picked

I have a pdf file created with itextsharp with images in the file. I would like to put a hyperlink in the file that if you pick the picture it will open that picture in a picture viewer. I can set a hyperlink to a web address but have no idea how to get it to open a file. Below is the code, yes I know that c:\test.jpg is a bad hardcoded file name but it is just a test. When you click the picture it does nothing but I have no idea how to tell it what to do.
iTextSharp.text.Image pic =TextSharp.text.Image.GetInstance(comment.examplePic);
pic.ScaleToFit(200f, 200f);
Chunk cImage = new Chunk(pic, 0, 0, false);
Anchor anchor = new Anchor(cImage);
anchor.Reference = "c:\\test.jpg";
doc.Add(pic);
doc.Add(anchor);

A PDF is self-contained. This means that all the resources needed to show the PDF are (usually) stored inside the PDF (exceptions are for instance fonts that can be retrieved from the operating system).
When you have an image that is shown on a PDF page, the bytes of that image are stored in what we call an Image XObject. An XObject is an object that is external to the page, but that is stored as a separate object inside the PDF file.
You are asking to serve the image bytes stored inside this separate object to a viewer on the operating system. This is impossible. I don't know of any viewer that can take those bytes and somehow forward them to an image viewer.
I can think of three possible workarounds. I don't know if any of these workarounds is acceptable to you.
1. Serve the image online
You could put the image on a server and use the code you have in your snippet to link to that online image. Of course: this will only work if the person viewing the document is online and clicks OK when his viewer asks him if it's OK to link to a resources on the internet.
2. Serve the image as an annotation
In this case, you create an annotation for which you create an appearance that renders that same image XObject in the annotation layer (all annotations are shown on top of the page content). You can easily change the visibility status of an annotation to make it invisible (in your case, this would be the default status) or visible (in your case, this would be triggered by a JavaScript action when clicking the link).
There's an example of such an annotation here: Advertisement. If you open advertisement.pdf, you see an image with a button that says "Close this advertisement". Once you click that, the status of the annotation will be changed to invisible. You could do something similar, but the other way round: click a link to make it visible instead of invisible.
This solution doesn't depend on an external viewer, the image is shown in the PDF viewer.
3. Add the image as optional content
Starting with PDF 1.5, PDF supports optional content. See for instance the OptionalContentExample. In this example, we have some questions and answers, but the answers are not visible by default. See layer_actions.pdf. There are links "on / off / toggle" to make the answers visible or invisible.
You could do the same with images: you could add them to a layer that is invisible by default, but that can be made visible if somebody clicks a link. However: this requires a viewer that supports OCG (optional content groups) and the actions to change the status of these OCGs. For instance: if you would try the layer_actions.pdf example in the PDF viewer in Chrome, it won't work, but if you download the PDF and open it in Adobe Reader, you'll see the behavior I described.
Summarized:
You are asking something that is impossible, but there are workarounds. Please post another question if you have chosen a workaround and you don't succeed in making that workaround word (but please take into account that not all viewers support every workaround).

no offence but too much knowledge sometimes makes you ignorant of small things.
simple solution to this problem is here
http://kuujinbo.info/iTextSharp/imageAnchor.aspx
sample code that i implemented works like charm
PdfPCell p1 = new PdfPCell();
p1 = new PdfPCell();
p1.Padding = 0;
p1.Border = 0;
PdfPTable nav = new PdfPTable(1);
nav.WidthPercentage = 100;
nav.SpacingAfter = 12;
navbarImg.Annotation= new Annotation(0, 0, 0, 0, ur);
p1.Image = navbarImg;
nav.AddCell(p1);
_doc.Add(nav);

Programmatically Clicking on a Web Page's Button in Windows Forms Application

I am working on a project which is Analysis of Papers from Google Scholar. What I do is basically, parsing the HTML, storing related fields into database etc. However, I am stuck at a point, while I am taking the Titles of the publications, I realized, I am able to get first twenty elements. But, there are sixty papers in related account:
http://scholar.google.com/citations?user=B7vSqZsAAAAJ
So, I think as a solution, I need to click to the 'show more' button programmatically, so I can have all the Title's, Publication Venue etc.
What do you think? How can I perform that kind of action?
Edit: I checked the 'show more' button, while there is nothing to show as a next page, its html code still remains same. As a solution I can use loop for n times. However, I am looking for more robust solution.
Thank you for your time!

If it is clicking on a button within a WebBrowser control on a Windows Form Application, then 'Yes' you can do it.
There are ways of getting more control over identification by using XPath.
(You might need to use Javascript to use XPath for object interactions - since you haven't asked for that, I will assume you don't need it)
webBrowser.Navigate("http://www.google.com");
// Or
HtmlElement textElement = webBrowser.Document.All.GetElementsByName("q")[0];
textElement.SetAttribute("value", "your text to search");
HtmlElement btnElement = webBrowser.Document.All.GetElementsByName("btnG")[0];
btnElement.InvokeMember("click");
Or even typing into text boxes with
webBrowser1.Document.GetElementById("gs_tti0").InnerText = "hello world";

If its this website specifically, there is a simple workaround. Change the query string to what records you want.
http://scholar.google.com/citations?user=B7vSqZsAAAAJ&cstart=0&pagesize=2000