.net - Operating On A Webpage Using The Document Object?
Oct 21, 2011
I have a VB.Net app that needs to print a bunch of pages from a secure intranet site; the app was made and was working for a non-secure site but now the app needs to login before accessing the web pages necessary to print. I get the error "Object Reference not set to an instance of an object" when I use my new Sub which follows:
Private Sub SiteLogin()
WebBrowser1.Navigate("http://url/login/")
WebBrowser1.Document.GetElementById("user").SetAttribute("value", "username")
[code]....
This Sub prints the given page in IE, so I figured I could use the same WebBrowser1 object for the login Sub, as I don't know how to or whether I should declare a separate object for the SiteLogin Sub. Both of these functions are called after the WebBrowser1 object is defined however. I just need to be able to submit a simple login form to a set URL, and this info needs to all be hardcoded (there's no option to set the location or login info nor should there be).
how to SetAttribute (a Value) for a textbox in a webpage document that don't have an ID .I already knows that to SetAttribute to a textbox you just need the ID of the element.
I.E : WebBrowser1.document.GetElementByID(THE ELEMENT ID).SetAttribute("Value",TextBox1.text)
So as you see in the example, to set attribute to an Element I need an ID and in my case I don't know what is the ID of the Specific Element.
I am parsing a web page with the HTML agility pack in vb.net and it works great most of the time, but I have come across a site I need help with.
When I go to grab the web page with my http object (I am using chilkat http and it does not have a javascript engine) I get back the page which is poorly written with document.writes for basically the entire page.
I do not want to use the browser control to first render the page.
Do you know of anything that will allow me to parse this page easily with xpath... does xpath work with javascript? Is there a way for me to remove the javascript with the agility pack?
I want to make an application that takes values & innerhtml from some elements on a webpage i made. For that i added a webbrowser to the project, and pointed it to navigate to my localhost server where i have some pages. However when i use the document.getelementbyid i don't get nothing on my richtextbox, and i don't know why, i use this function lot in javascript & i think its quite similar, so i don't know why it doesn't work , here is the code i use.
if i create an instance of an object/webpage, is that a complete new object/page based on the original or does it does it just make it accessible? i am almost sure that it creates a new object/page but i would like confirmation. in other words what is the result of this code?
dim Page2 as new Page1 dim Page3 as new Page1
would this create 2 new pages that i can "customize" separately and add different controls to each? heres a brief description of what i want to happen:the user will be viewing Page1 and when he clicks btnCreate i want a page that i created in the designer to be shown and its name and other variables to be determined by what the user chose for room options in Page1. i need "new versions" of this page to be created because multiple users will be creating multiple rooms. i understand that there are more lines of code involved in creating pages and i do have more questions regarding those but i will wait until i confirm that dim Page2 as new Page1 will create a new page. like i said im sure that this does create a new page but i need confirmation. also if it does create a new page, how do i get it to show. i know that response.redirect will redirect me to a dif page but i want show this new room on top of the old one.
-There are 2 frames , frame1 and frame2 , in my web page. I want to gain access to the document object of frame1 using vb and web browser. How can I write straight forward codes to do this?
I'd like to know if it possible to show HTML page created in VB using WebBrowser object without using files on disk.That is, create HTML file in memory and show it within WebBrowser object.
I was trying to use HtmlDocument and a given url to pull in the html contents of a website to use. However there is no constructor for HtmlDocument and it's Url property is readonly. Is there any way to create an object that contains the entire DOM for a given url?
I created a report using report document object model in visual studio 2008 with vb.net. But I found one error. When the user clicks export button in client side, the following error will show. But the first time is OK before the user clicks export button.
Logon failed. Details: ADO Error Code: 0x Source: Microsoft OLE DB Provider for SQL Server Description: Login failed for user 'zanhtet'. SQL State: 42000 Native Error:
This is calling report code.
Dim ReportDocument As New ReportDocument() Dim ReportPath As String = Server.MapPath("~/ReportDocumentOM/DBlogInRDOM.rpt")
With vb.net code a Word document is manipulated. In this Word document there is a TextBox object that needs to be moved to a specific position in the document.I tried to start from a recorded macro in the Word document but I can't select the TextBox object while recording.
I tried to find a way using ActiveDocument.StoryRanges(WdStoryType.wdTextFrameStory) but I got stuck here.
Is there a way to move (the left upper corner of) the TextBox object to a specific position in the Word document?
I have an XmlDocument object in memory which I need to update a database table with. My SQL Express 2005 DB table is three columns: Name, Telephone, Location. Below is the structure of the XMLDocument. What is the recommended technique to accomplish this?
HTML <MyDirectory> <Prompt>Records 1 to 561 of 561</Prompt> <DirectoryEntry> <Name>John Doe</Name> <Telephone>22334222</Telephone> [Code] .....
in my VB.NET project I included a word document called PrintOut.doc as resource (My.Resources.DocumentPrintOut)Now the question is how can I convert this resource to a Word.Document object so that it is possible to open and modify it?
My application needs to extract an embedded file (OLE object) from an excel 2003 document to a file on disk. This file can be any type, not only an Office document. Searching in the web it seems to be possible by copying OLE object to Clipboard and later copying (binary) it to a file (¿perhaps using MemoryStream and FileStream?), but I see no working code about this.
I have some data that is contained in HTML tables within a webpage. I need the simplest means of extracting the data for storeage in SQL tables. I am knowledgeable of how to add the data to SQL tables...this portion of the code is already written. I would like to pull the data into the VB.NET 2008 environment using the XML DOM or a more efficient option.
If I am using with WebBrowser how I can add tags to source code of the page in runtime (Make a changes on site). For example: I have site with this <html><head> Test page </head><body> this is the text </body></html> Now how possible to add elements/tags to text in runtime?
I am getting a javascript error when I attempt to click on my calendar control.
The html code is: <td align="left" style="width:50%;"><asp:Label runat="server" CssClass="TextFontBold" ID="lblStartDate" Text="Start Date:"></asp:Label>
I am getting this error when I call a javascript function to display a modal window:
Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object
The code block is:
else if (action=="officeview") { document.getElementById("OfficeContent").src="ChangeView.aspx"; ShowFeatureModal('AppView','OfficeContent')
The object is this situation, does exist. Error is caused at: document.getElementById line.What else could be causing the error?
Update:Index.aspx is calling the javascript function which is located in sysUtilities.js file. The source file is yet a seperate page (ChangeView.aspx)
I have a situation where I have an xml document that has a bunch of elements that I basically use as data variables. I populate the variables from various sources and then transform the xml file to an html file for user viewing.having to remember the names of all the data elements in the file is somewhat tedious. Is there a way to generate a strongly typed xml document object so that one can simply dot into the various data elements?
i have an aspx page with vb.net back end. in that page i get names and url's from the database depending on different conditions. My requirement is that when i get the url, the code should then use that url and have that webpage in a small preview form on my existing aspx page. so basically i have a table as follows -
We have an interactive windows based application written in VB .Net 2010. It uses Word Object to display documents in MS Word. We have a form with a button. When the button is clicked we open the Word document and maximize the Word Windowstate. When we have the Visual Studio Tool running, the Word Document is maximized and has focus, even if we are running the exe from the bin folder outside of the tool. However, if Visual Studio is not running and we run the exe, focus remains on the original form window and the document stays in the task bar.
is there a way to get the raw data of a word file document object?
word = new Word.Application();doc = new Word.Document();
now, I open the word file, do some replace. save the file. I could open the file as raw binary file. but I'm thinking maybe there is a property that can get the raw the data? which property?
i always thought that visual basic is a IDE to develop windows based programs or now windows phone apps but recently i have been seeing many tutorials and videos regarding visual basics and it's ability to make "operating system".i was wondering what is the story with that and is that true that visual basic can develop operating systems?
I know that my question is very strange but please , I want an answer I want to make a simple GUI and 32-bit operating system with file manager , clock , calculator , image viewer and notepad (media player if available ) .
