I know how to extract an entire page source into VB.NET, but once I do that how do I make VB.NET search the text and return a specific vlaue that is not constant?
Take this line from the page source for example:
<td id="actualPriceContent"><span id="actualPriceValue"><b class="priceLarge">$4.30</b></span>
the text is always constant but the price is not - how do I make VB.NET return the price?
I know how to extract an entire page source into VB.NET, but once I do that how do I make VB.NET search the text and return a specific vlaue that is not constant? Take this line from the page source for example:
[Code]...
There have probablly be thousands of threads just like mine[code]...
View 1 RepliesThe info i need extracted is formatted:
<TD><A HREF="http://xxxxx.com/xxxxxx/index.html"><IMG SRC="../xxxxx/thumbnails/xxxxx.jpg"> </A></TD>
<TD>=== <B><A HREF="http://xxxxxxxxx.com/xxxxxxxx/index.html">LINE 0</A></B> ===<BR>
<FONT SIZE="2" COLOR="#400080">
[code]....
how do i extract the info between TD=== and /a and Line 1,2, and 3 and store it into a database from a live website?
I would like to extract data from a html tag. The html tag is included inside a big html document.
Precisely i would like to extract the value of "txtGUID" from this html tag :
<td width='75%' bgcolor='#F3F3F3'><input type='hidden' name='txtGUID' value='soft:24f709f1-becb-44c6-8359-7c8b0b4a6e14:SLIP'/></td>
I need to extract some data from a html source [code]...
Now the problem is the words info ect.. wont always be there the content will change so can do something like getelementsbyclass or is there is a way to extract the text between
"<div class="bbcode_quote_container"></div>" and "</div>"
I am using a web browser control by the way
I have some html that I want to extract any data that is between the following two bits of HTML:
<DIV class="this-text my-data">
</DIV>
What code would do that?
I need to extract specific data from a database. With starting point in this data, I will collect information on the internet. After the information is collected I need to check if this information is already stored in the database, and if not, then add it. This action is being repeated about 500-50000 times each time the procedure is being executed. (not often)
The approach I'm taking seemes sleazy and ineffecient and I was hoping you could point out some places where I might be able to optimize it. I've two open connections at the same time. The first I use to extract data, and it stays open throughout the whole session. The second connection is being used first to check if an entry already exist and if not, to add the data.
The reason I am using two connections is due to the fact that I got a reader bound to the first one, so it is rendered unavailable.
I was thinking that maybe checking if the data existed, and adding it if not, maybe could be contracted into one command execution instead of two. I don't know if it would be possible to do this with one connection only as well, as it seemes more proper.
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.
I am new here and really excited to see the huge resources on this forum for vb.net. I have just started my learning of vb8 and need to create some basic applications for my personal use.I need to develop an application that can extract data from a html table and store that data into Access database. I have learned to create web browser on Visual Studio 2008. Below is the link from which I need to extract data and store into a database
View 3 RepliesI've given a job to convert old data in table format to new format.Old dummy data is as follows:
<table>
<tr>
<td>Some text 1.</td>
[code].....
I have used .NET and ShDocVw for years to grab data off webpages without any issues I couldn't overcome. This website has me beat though. It seems like such as easy task to grab the titles and other information off a library search page, but I can't see the data to be able to grab it. Usually, I just look in the DOM, but the data wasn't there. I did a view source, but the data wasn't there.
View 1 RepliesI'm looking for an efficient means of extracting an html "fragment" from an html document. My first implementation of this used the Html Agility Pack. This appeared to be a reasonable way to attack this problem, until I started running the extraction on large html documents - performance was very poor for something so trivial (I'm guessing due to the amount of time it was taking to parse the entire document).[code]...
View 3 RepliesI have came up with code in my vb.net app that can extract particular tags, but what if I wanted to extract only certain lines of html code?
<td style="min-width: 100px; " align="right" class="aw-td body-td">4,400</td>
How would I extract URLs from a website? For example, if the website was "url...", then the urls extracted would be[url]...
View 1 RepliesHow would I use Regex to extract the body from a html doc,taking into account that the html and body tags might be in uppercase, lowercase or might not exist?
View 3 RepliesI'm trying to extract a portion of html between 2 comments.
here is the test code:
Sub Main()
Dim base_dir As String = "D:"
Dim test_file As String = base_dir & "72.htm"
[Code]....
The HTML file contains the start and end comments and a good amount of HTML in-between. Some content in the HTML file is in Arabic.
I am using visual basic 2005. I found on the web the following function that extracts HTML from webpages. It is very useful but unfortunately it does not work with redirected pages. That is, when I put in it a URL of a redirect page it gives me nothing or error. I added to it ".AllowAutoRedirect = True" but still it did not work. I wonder how to make it work for redirected pages.
[Code]...
I'm wanting to extract a table on a regular basis from an HTML web page in to a listview control. Before I start the long winded manual process (which I'm sure I can do, finding strings etc). I was wondering if there was a built-in way with VB.NET?
View 6 RepliesI want to extract the link in this code: <a class="i_link dominantcol" href="http:rapidgen.net/get/3lt4c/megakey.exe">Download</a>.Using webbrowser1. getelementbyid - how do i do it? I just want the link as dim x as string = http:rapidgen.net/...t4c/megakey.exe
View 1 RepliesI am working on my application that I am reading the strings through html page using with httprequest. All I am trying to achieve by find the value using with the matches which come next equals, something is like: "Address=Whateveritgoeshere". So I want to extract to get the strings which it would be: "Whateveritgoeshere"
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Address of URL
Dim URL As String = "http://mysite.com/getInfo.asp?id=" & Textbox1.Text
[code]....
However when I deug to run the application, I have got an empty returned strings. Do you know why I have got an empty returned strings?If you think that I have done something wrong then how I can only extract the strings that come next to the "Address="?
i have a log file which contains hundreds/thousands of seperate XML messages and need to find a way to extract a complete xml message depending on the parameters given (values of nodes).My biggest problem is that even though i program a fair amount i have had very little contact with XML or the XML libraries of the languages i use and didnt think that a simple text parsing would be an elegant solution!I am going to attempt this in C# or VB.net
View 3 RepliesI am trying to extract a number from a specific line and finding it an arduous task.
-#comments">18 comentarios</a></span>
I need the number before the word commentaries. This is a common phrase to search for and extract. the start of the line varies.
I am trying to extract a specific bit of text from a xml file. The file is located in C:Testspac emp1.xml and the specific text is between <space></space>How do I go about getting this text and displaying it in a textbox.
View 2 RepliesI've tried to extract the URL from an html page using regular expressions. It is really hard to understand. I have an existing application and would like to alter the code to search for a url in the form src="[URL]" the problem is that ive tried to use different expressions to no avail. could someone look at this code and advise how to alter it do what I need it to do.
[Code]...
im parsing the data from a webpage... It basically contains a table whose source code ive pasted below.... Now i need to get the values of each cell of the table into a listbox... So basically i need to extract the numbers in the <td> tags... Now the table has approx 10 values similar to the 4 ive added below..
<table cellspacing="0" cellpadding="0">
<tr>
<th>Serial NO.</th>
[code]....
i am trying to extract some usernames from a website. normally i dont have a problem and but cant get it to work...here is the code i normally use
For Each temp As HtmlElement In WebBrowser1.Document.Links
Dim str As String = Nothing
str = temp.GetAttribute("href")
[Code]....
but this is the html code i want to get from
<a href="http://help.com/?status=@astradamasta%20&in_reply_to_status
how would i go about getting the user which is astradamasta
how I can extract the html code from giving URL?
View 9 RepliesMy problem is to extract some specific string from the web script by RegExp, e.g:
1. <TD title="ABC - SDC">Home Furniture</TD>
- I want to extract "Home Furniture" from here.
2. <TD><INPUT class=ID="( 8352623 ) Demark" value="( 8352623 ) Demark"></TD></TR><!-- <tr> -->
- I want to extract "8352623" from here, can be any of them.
How can I write a RegExp to match them?
And I am getting one solution but work out in C#, obviously it's not working in VB, so anyone does me a favor to translate them in VB structure...
string pattern1 = @"<([tT][dD])[^>]*>(?<between>.*)(?=</1>)";
string test1 = @"<TD title=""ABC - SDC"">Home Furniture</TD>";
if (Regex.IsMatch(test1, pattern1))
[Code]....
My text file look like this[code]...
I want to extract those lines according to value in ( ).