Read / Extract Text Data From A Webpage?
Mar 11, 2010
I am trying to build a VB.NET 2005 windows app which gets cars info from a webpage(webapplication) that has a username and password.
I was able to programmatically login to this webpage(by automatically populating the input boxes using webbrowser control) And after I logged in, I could view the cars data in browser and I did "View Source" but the cars data (such as car model, brand, color etc..) were not viewable in the page source code. So how can I read these data with my application?
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Jan 2, 2010
I am trying to build a VB.NET 2005 windows app which gets cars info from a ebpage(webapplication) that has a username and password.I was able to programmatically login to this webpage(by automatically populating the input boxes using webbrowser control) And after I logged in, I could view the cars data in browser and I did "View Source" but the cars data (such as car model, brand, color etc..) were not viewable in the page source code
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Jan 2, 2010
I am trying to build a VB.NET windows app which gets cars info from a webpage (web application) that has a username and password. I was able to programmatically login to this webpage(by automatically populating the input boxes) And after I logged in, I could view the cars data in browser and I did "View Source" but the cars data (such as car model, brand, color etc..) were not viewable in the page source code. So how can I read these data with my application?
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Aug 17, 2010
I want to extract text from a web page, I used the web-browser component but I found only to load the webpage, how can I read text from the webpage?
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Apr 23, 2012
I am working on a project just for fun in my spare time and would like to know how to extract certain text from a webpage. For example: One of the tools I wish to have is a translator and I wish to use google translate set on Detect language to English. What I wish to extract is the translated text into the form or a msgbox.
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Mar 1, 2011
I have the following code to open a webpage:
Dim IE As Object
Dim x As Integer
Dim c As Variant
[code]....
The page that opens is in xml and in that xml there is the "page_count" that I need to pick out so I can tell my macro when to stop looping. I have dimmed it as "c" in the code above. Following is the XML.
<search>
<total_items>360</total_items>
<page_size>100</page_size>
<page_count>4</page_count>
Somehow I need c = "4", which is the "page_count". Does anyone know how I can pick out the "4" from the xml on my page?
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May 15, 2012
Extract Data from Webpage?I have this code so far.[code]...
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Aug 15, 2011
how to extract data from this web page url...Its mainly the Ip address and port but i have no idea in where to start. I know to start out with this Dim elements As HtmlElement Collection = Me.botBrowser.Document.All.but i dont know how i would transverse the source code to find the ip address and port.Also like if i just wanted to first one on the page each time the page refreshed how would i do this also
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Nov 5, 2011
I have been trying to extract the text between multiple tags on a web page with the same outerhtml info. For example:
[Code]...
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Oct 14, 2009
I'm trying to make an application which will log me into a site and read the text of the site and display a certain part of that text in my form. I'm stuck at the login, its a .php page with 2 text boxes, 1 check box and 1 button.Is there any way to manipulate those objects by using controls in my form?
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May 24, 2009
I made an application to rapidshare. I want, program will shows rapidpoints, traffic left etc... Login to account works fine, but it can't show informations... I have this:
Quote:
CODE:
And program shows me some numbers instead of correct infos...
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Jun 5, 2011
I want to get a line from a web page which start with a fixed word and display it in text-box. like if web page contain line > Location: United States ..where "Location:" text is fixed and "United States" means country changes depending on search performed.
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Apr 26, 2010
I have a login form and what it does its uses datastream or webrequest and post's a url to a php file i have. If the login is true, it will return a 1, if it is a bad login, it will return 0. But my problem is that the acars wont read 1 or 0. it reads all of the html on the page. Is there anyway i can make it so it only displays a 1 or 0 to the acars, and not all the html of the page?
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Jan 21, 2011
To simplify what I am trying to do, let's say I have a text file with only one line of data.
The data in this case is color info for one pixel:
Color [A=255, R=255, G=200, B=128]
What I am trying to do is read the text file and extract the hex color info and save them to their own variable.
So once the code has run, these should be the contents of the three variables.
RedData = 255
GreenData = 200
BlueData = 128
I have managed to get something to work but I know the code is terrible and is incredibly slow when I try to run through hundreds of lines in a text file.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim PixelData As String
[Code].....
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Feb 16, 2010
Imports System.Globalization
Imports System.IO
Public Class Form1
[Code]....
I have found the above code from the net and it works fine as I would expect. I know this because I have added a put the String StoreFile into a text box and it worked. From what I understand about the code above is that we are reading the file test.txt until we reach the end of the file and we are storing it into a string.
What I would like to do is either:
1. Search the String StoreFile until I find the text of my choice, and then extract the characters around it. See attached txt file.
For example, if I wanted to search for MNAUSD in the attached txt file, I want to grab the values on the line (highlighted in blue) and make them available to my program and ignore everything else.
"MNAUSD",UNITED STATES,US $,M,1.558850,1,1.369850,1.113500,L
I know these files are comma delimited, but I would rather use a regular expressions if possible as I have other files that are not comma delimited, so it would be ideal if I have a regular expressions to handle the search and extract
OR
2. Search the File test.txt LINE BY LINE, until I reach my search text MNAUSD and then extract the same values as above.
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Jul 10, 2009
I want to extract the user id in the webpage[code]...
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Dec 13, 2011
I wanted to extract today's date from [URL] and the expected output will be: Wednesday, December 14th, 2011
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Jul 18, 2010
how can I extract the source code of a web page and to save it into a text file -- I would like to have a VB code to do the same?
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Jun 6, 2011
Basically I am building a webcrawler and in order to do so
I have to extract the page source of a webpage which I can do so like this:
CODE:
The above code works fine on most of the websites I have tried to extract page source from but for some reason it is failing to extract the html contents of few websites like these where the message posted by a user is nowhere to be seen? The webpage in question is this: [URL]
Is there something I have missed or is it due to forum protection etc which is preventing the vb application from extracting the whole page source?
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Dec 13, 2011
I wanted to extract today's date from
[URL]
and the expected output will be: Wednesday, December 14th, 2011
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Jul 7, 2011
How to go about extracting user comments on likes of forums by using the page source.[code]...
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Oct 21, 2010
I am using Streamreader to read a text file containing data such as the following:
IN;SC;PU;PU;SP1;LT;VS10
IN;SC;PU;PU;SP1;LT;VS10
PW5;PU4179,27448;PD4179,29951;PD3244,29951;PD3244,30286;PD5494,30286;PD5494,29951;PD4555,29951;PD4555,27448;PD4179,27448;
The final goal is to use the numbers next to the PU and PD characters to perform specific calculations.
Essentially, I think the code needs to do the following:
1. Read each block of characters ending in a ";"
2. If the block commences with anything other than PU or PD, discard it
3. Extract the numbers in such a way that calculations can be performed. The following is an example:
x y
PU4179,27448;
PD4179,29951;
[Code]....
Essentially, there will be hundreds of these rows and I will need to sum up the deltas so that a specific formula can be applied.
I have tried doing this a number of ways but each seem very inefficient (using text boxes to store/swap data and creating additinal text files are 2 methods I have tried) and so I'm looking for some direction.
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Aug 21, 2010
I wanted to ask you something which is bugging me for a while. I work an IT dept at a local bank and I got instructions to make an application which should retrieve some financial info from a financial banking stats page.
The webpage can be accessed through[URL] and the info can be seen in the web browser but I cannot extract them because the info is not available in the source code of the page.It seems it's generating the info dynamically using a jsquery.js file.
I was wondering if it's possible to make an app which uses some cache or something (I guess the the page is saved temporary somewhere on the disk for the current session) to retrieve that data in vb.net?
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Mar 4, 2011
I am trying to create a executable that on opens:
-Navigates to a webpage
-Fills in the login Form
-Submits the form
[code].....
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Apr 4, 2010
I need to load and parse a text file and extract data between points on any given line. I can load the file, but it's the parsing that's giving me headaches. e.g. "Phoned Jim and arranged for John to attend site" First I need to search for "Phoned" because the line always starts with that, and then I need to extract "Jim and arranged for John"
[Code]....
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Aug 21, 2010
I wanted to ask you something which is bugging me for a while. I work an IT dept at a local bank and I got instructions to make an application which should retrieve some financial info from a financial banking stats page.
The webpage can be accessed through [URL].. and the info can be seen in the web browser but I cannot extract them because the info is not available in the source code of the page.It seems it's generating the info dynamically using a jsquery.js file.
I was wondering if it's possible to make an app which uses some cache or something (I guess the the page is saved temporary somewhere on the disk for the current session) to retrieve that data in vb.net?
View 3 Replies
Jun 23, 2010
How can I parse a text file and extract the data to excel file. The text file is in the following format
CustomerInformation
Tim Alen
596 George Town
[Code].....
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May 28, 2010
I need to parse a text looking for the string - [[Extract|xxxxxxx]] and extract the xxxxxxx characters.How would I do this?
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Jun 10, 2011
I am currently trying to develop an algorithm for the following problem: Read data from a text file such as: the driver returns on his glorious day. He's very happy to be safe and.sound at home, with his wife. With that data, i need to print the length of each word in the file and the total number of words in the file. But symbols such as . or , or ' cannot be included in the word length.
[Code]...
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Mar 31, 2011
Im building a project that reads data from a text file. Its in the format of an address book:
First Name
Last Name
Phone Number
I can read thae data in to an structure:
Public
Structure AddressRcd
Public userID
[Code].....
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