I have a problem in which sometimes (not clear when exactly), displaying an embedded document with docs.google.com does not show the document until I resize the browser window.
Grab some popcorn, here's a movie that shows the problem:
Here's my code:
HTML:
<iframe runat="server" id="frame" style="width:100%;height:600px;border:0;"></iframe>
C# Code begind (in Page_Load method):
frame.Attributes["src"] = "https://docs.google.com/gview?url=https://example.com/1.doc&embedded=true";
I tried reproducing it by browsing directly to https://docs.google.com/gview?url=https://example.com/1.doc&embedded=true but it never happens this way.
Note: Sometimes the document is never displayd at all, as if it was never loaded, and the iFrame remains totaly blank.
Any ideas how to fix this?
You could try to setup a default document size. This is what I do to print envelopes from Google Docs
var envelope10={};
envelope10[DocumentApp.Attribute.PAGE_HEIGHT]=296;
envelope10[DocumentApp.Attribute.PAGE_WIDTH]=684;
envelope10[DocumentApp.Attribute.FONT_FAMILY] = 'Calibri';
envelope10[DocumentApp.Attribute.FONT_SIZE] = 18;
envelope10[DocumentApp.Attribute.BOLD] = true;
envelope10[DocumentApp.Attribute.LINE_SPACING]=1;
Related
I am trying to retrieve whenever the website displays the following message from a jQuery event. Initially this HTML inst displayed in the HTML.
<div id="toast-container" class="toast-top-right"><div class="toast toast-error" aria-live="assertive" style="display: block;"><div class="toast-message">Check email & password.</div></div></div>
My assumption is, that the webBrowser1.DocumentText.Contains is only looking from the initial load of the content.
So I thought maybe some sort of timer would work every 5 seconds, looking to see if the code has changed - but I don't even think this is right as it's checking the code that's already loaded repeatedly?
private void timer2_Tick(object sender, EventArgs e)
{
// Checks for any errors on sign in page
if (webBrowser1.DocumentText.Contains("toast toast-error"))
{
// Toast Notifications
var signinErrorNotification = new Notification("Error", "Please check your email and password are correct.", 50, FormAnimator.AnimationMethod.Fade, FormAnimator.AnimationDirection.Left);
signinErrorNotification.Show();
}
}
How do I go about getting the latest code that's been affected by any jQuery.
P.S. My c# level is beginner.
The Document property should give you what you need.
Notice that the docs for DocumentText say
Gets or sets the HTML contents of the page displayed in the WebBrowser
control.
For Document they say
Gets an HtmlDocument representing the Web page currently displayed in the WebBrowser control.
To me that's saying that DocumentText is like the starting document and Document is the current DOM. Also see https://learn.microsoft.com/en-us/dotnet/framework/winforms/controls/how-to-access-the-managed-html-document-object-model
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);
I display the Google custom search results for my site onto a new page. I would like the each search result, when clicked, to go to a new browser tab/window.
From my understanding of Google GCSE, clicking on a result should automatically go to a new browser window. The Search Results linkTarget defaults to _blank. I added the explicit code anyways.
<div class="searchresults-only" data-linkTarget="_blank"></div>
<gcse:searchresults-only linkTarget="_blank"></gcse:searchresults-only>
What I see is that clicking on a search result stays in the same browser window and does not go to a new one.
What am I doing wrong?
<div class="searchresults-only" data-linkTarget="_blank"></div>
Div code is not neccessary for this task
try this code
<gcse:searchresults-only linkTarget="_parent"></gcse:searchresults-only>
it will help you.
just replace linkTarget="_blank" to linkTarget="_parent" and run it..
I'm using a user control, and added my report viewer and a custom toolbar. I want to create a custom navigation for it aswell, but for some reason when I want to check the total pages to decide whether or not to show the navigation buttons it either returns 0 or "This expression causes side effects and will not be evaluated" error..
I've ran out of ideas and not quite sure where to go from here..
<rsweb:reportviewer
ID="rvReports"
runat="server" ShowToolBar="False"
SizeToReportContent="True" AsyncRendering="false" />
codebehind:
rds = new Microsoft.Reporting.WebForms.ReportDataSource("dsName", myclasstoload());
rvReports.LocalReport.DataSources.Add(rds);
rvReports.PageCountMode = PageCountMode.Actual;
rvReports.LocalReport.Refresh();
rvReports.DataBind();
if (rvReports.LocalReport.GetTotalPages() > 1)
{
liFirst.Visible = true;
liPrevious.Visible = true;
liNext.Visible = true;
liLast.Visible = true;
}
this is all on the databind event in my usercontrol (.ascx). Any help is more than appreciated.
This msdn question is probably your answer, the GetTotalPages() method can't be called until after the report has rendered. The relevant quote:
The report server won't calculate the total page count until rendering the first page of the report. The ReportViewer doesn't request a page rendering from the server until the ASP.Net event PreRender. If you move the GetTotalPages call to a point after the ReportViewer.PreRender event has fired, you should get the behavior you want.
See also the ASP.NET Page Lifecycle for reference.
to get the pages as for me, I had to render the report in pdf, then using pdfreader class from Itextsharp library to get total pages
var bytes=viewer.Render("PDF");
PdfReader reader = new PdfReader(bytes);
var pageCount = reader.NumberOfPages
this works well if you want to render your rdlc in pdf format
C# Visual Studio 2010
I am loading a complex html page into a webbrowser control. But, I don't have the ability to modify the webpage. I want to click a link on the page automatically from the windows form. But, the ID appears to be randomly generated each time the page is loaded (so I believe referencing the ID will not work).
This is the content of the a href link:
<a
id="u_lp_id_58547"
href="javascript:void(0)"
class="SGLeftPanelText" onclick="setStoreParams('cases;212', 212); window.leftpanel.onClick('cases_ss_733');return false; ">
My Assigned</a>
Is the anyway to click the link from C#?
Thanks!
UPDATE:
I feel like this is close but it is just not working:
HtmlElementCollection links = helpdeskWebBrowser.Document.Window.Frames["main_pending_events_frame"].Document.GetElementsByTagName("a");
MessageBox.Show(links.Count.ToString());
I have tried plugging in every single frame name and tried both "a" and "A" in the TagName field but just have not had any luck. I can just not find any links; the message box is always 0. What am I missing?
Something like this should work:
HtmlElement link = webBrowser.Document.GetElementByID("u_lp_id_58547")
link.InvokeMember("Click")
EDIT:
Since the IDs are generated randomly, another option may be to identify the links by their InnerText; along these lines.
HtmlElementCollection links = webBrowser.Document.GetElementsByTagName("A");
foreach (HtmlElement link in links)
{
if (link.InnerText.Equals("My Assigned"))
link.InvokeMember("Click");
}
UPDATE:
You can get the links within an IFrame using:
webBrowser.Document.Window.Frames["MyIFrame"].Document.GetElementsByTagName("A");
Perhaps you will have to isolate the link ID value using more of the surrounding HTML context as a "target" and then extract the new random ID.
In the past I have used the "HtmlAgilityPack" to easily parse "screen-scraped" HTML to isolate areas of interest within a page - this library seems to be easy to use and reliable.