XML NameSpaceManager Question When Reading RSS Feeds?
May 15, 2012
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim rssUrl = _[code]....
I get a Null Reference Exception on the next to last line of code. (Object reference not set to an instance of an object.) The line that begins with "Temperature.Text = .......". If I remove the last two lines of code the program works.If I edit the last two line to read "yweather:condition/@temp, and yweather:condition/@date" instead of what's shown above, the program works. I think it has something to do with the XML NameSpaceManager not being setup correctly.
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Jan 23, 2010
I am a CS grad, but haven't had much to do with programming since my school days as I went the BA route.Anyways, there are a few things that I do manually on the computer and thought that I could probably save time by creating an application for them.But I'm not really sure how to start.I'd like to be able to keep a history of Completed eBay listing so that I know when the price point is good and when it is too high.I noticed that eBay has an RSS feed, so I think I can do it. Just a couple of quick questions:
1 - Can I instruct VB.net to open a web browser and read an RSS feed, or would I need to manually do this myself and then run the application?
2 - What is the best way to work with RSS feeds? Should I convert the data into XML first?
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Apr 15, 2012
how to convert rss feeds to datagrid in this fomat
<Row>
<Cell><Data ss:Type="String">Symbol</Data></Cell>
<Cell><Data ss:Type="String">Close</Data></Cell>
<Cell><Data ss:Type="String">Prev</Data></Cell>
[code]....
the values in the first <row> </row> of data are the column headings for the corresponding cells in the other <row> </row>considering that I can work with xml in the other format this is quite strange so any help will be needed.
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Apr 25, 2010
i trying to display an rss feed but i dont think im using the right object as the webbrowser object does not work. ive tried several other objects but to no avail. is there a specific tool i should use or is it my code?
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Jul 8, 2011
I am working on a program which can list all news from a webpage ( url...), but I have problems to get the news. I know that it is possible to get the rss feeds where all the news are listed ( for this example it's url...) via XML to LINQ ( I need all links, titles and descriptions ), but I have no knowledge in it
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Feb 21, 2011
im developing an vb.net application that displays live scores for soccer. Is it a must that i must get the live score from the xml feed like looping through the "nodes" to get what i want to display on vb.net form? is it more customizable with xml? Somehow i saw some website provide the web link to add to site, is the link can be used in my form in order to serve my purpose?
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May 21, 2011
I've integrated a bit of code into my project using Visual Basic, that reads RSS feeds. It works absolutely fine. I did however intend it to read Facebook notifications to users of my program. The idea was, if you go on Facebook, clikc Notifications, click See All Notifications, click via RSS, you get an RSS feed right there. When I use the address in the address bar for my project's RSS reader though, I just get an error.
Like I said, it works for other feeds, just not working for Facebook notifications.
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Dec 9, 2010
I have a requirement to consume only the latest two rss feeds (using .NET) to reduce latency in reading RSS. I found plenty of examples to consume RSS. However, I did not find any to limit the feeds being read. And, this is not for a windows forms application.
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May 19, 2009
This seems to be a great article by Scott Mitchell for creating syndicated feeds in ASP.NET 3.5. The problem for me is that it uses C# and Linq, which I'm not as sharp on at the current time.[URL]...Does anyone know where an example might exist for the System.ServiceModel.Syndication namespace that can produce a syndicated feed like this article using VB.NET and a SQLConnection object?
I've looked around and every example seems to be produced in C# and Linq (which is probably a testament to my need to learn them soon rather than later).
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Sep 15, 2010
I have a form that contains a RichTextBox control that I have set to multiline. I also have a menu item that allows the user to save the contents of the RichTextBox as either a .rtf document or a .txt document. Here's the code I'm using so far:
If sfdSaveTextFile.ShowDialog() = DialogResult.OK Then
m_strDocFileLocation = sfdSaveTextFile.FileName
m_strDocFileExtension = System.IO.Path.GetExtension(m_strDocFileLocation)
[Code]....
into the RichTextBox control (rtb) then saves as a text file this would save the text file like: "TempTemp"
Is there any way to write to the text file with line feeds included?
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Dec 6, 2011
How can I split this into columns: The Church OfficeOakley Hall8 Castle Street Its been imported into a dgv from a CSV, it is the business address field in Outlook. Can I do a split from addresses that contain returns/line feeds?
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Jan 27, 2012
Need to get length of a string minus the line feed chars and came up with this. Is there a better/more efficient way?
Function GetLenMinus_LF(s As String) As Integer
s = s.Replace(ControlChars.Lf, String.Empty)
Return s.Length
End Function
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Feb 15, 2011
Is there any way, in my project's properties, to put a carriage return or a line feed in the Description field of the Assembly Information dialog box, in which the Description information would then appear in the description field of the about box of my project?
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Dec 24, 2009
I am monitoring 12 video feeds from video cameras. Now I have more than 12 cameras, I have 134. But I will only monitor 12 cameras at a time. By Monitoring I mean, I have 12 small video screens on the form that I can see the video. The way I know which cameras are active, so I can monitor them is by a boolean value in a sql database. I run a Store Procedure in my program, and spit out the results in a XML file. I then read the XML file in a loop. This XML file will have a list of the camera names I need to monitor.
So that is for 12 video feeds. Now, I want to have a NEXT or FORWARD button on my monitor form. So when I click this it will give me the next group of cameras, 13 to 24. Now if I only have15 cameras that are active, that means the first group is 1 to 12, then the second group is 13 to 15 cameras. So I will only have 3 to monitor on the second grouping. One thought I had was to have another field in my table to mark as already as an active monitor, so when I run the SP, i will not select that row. But I need to select 12 at a time. Or I can make a number of xml files, one xml file for each grouping of 12, but I need to figure out how I can select the next group without re-selecting the first group. I have no code at the moment, I'm on my non-programming computer.
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Jan 2, 2010
I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
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Nov 13, 2009
I have a dictionary object (let's call it _do) I am using to cache some values for use in a multi-threaded program. I have a single controlling parent thread, with a timer function _doTimer() which can kick off child threads with a new instance of class MyThreadObject in each. My parent thread has _do as a property and with each time _doTimer() gets called, it may or may not repopulate _do depending on cacheflag settings. I pass a reference to _do to each instance of MyThreadObject and those threads at some point read the values of _do but DO NOT write to it.
What I want is to ensure that the child threads do not try and read _do whilst the parent thread is writing to it. Same thing but very slightly different -> I also don't want the parent thread to write to _do whilst the child threads are reading from it. However there is no problem with 1 child thread reading the values of _do at the same time as another child thread is reading the values - so ideally I do not want each child thread to completely lock out read access, only locking out Write access.. The code is roughly like this:
[Code]....
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Apr 18, 2011
Even though the row is there its not allowing me to read the next row. I thought this would have worked but obviously not.
Imports System.Data.OleDb
Public Class formalQuiz
Dim Questions As String
[Code].....
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Nov 19, 2010
I've been working on this project that lets me read in file "scores.txt" This file has a student name then a grade. ie:
Scubastevie
56
superman
33
There is no limit to amount of data scores should be able to read.
I'm just trying to be able to read in both sets of data and then have it display this way:
Scubastevie 56
Superman 33
I know you use arrays and I have done some code. Here is what i'm trying. I don't want two arrays, just one.
Public Class Form1
Structure ExamGrades
Dim name As String
[]Code].....
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Feb 14, 2010
I am trying to develop a tool for use with an online game which has XML files available online (not downloads, automatically updated XML website things). Sorry if I'm not too clear as I don't truly understand how they work or anything!Anyway, I am trying to make a vb.net program access the information stored in these online XML pages but am having some difficulty. For a start, I tried the vb.net's help files which didn't help a great deal (well done Microsoft) because of the lack of informative comments on each code sample. It merely said that the output would be this (didn't even say where this output would be.
Next I tried searching the web but although I found a few things, some on this site, most of them were questions where the person already had a good knowledge of XML usage so they didn't put many comments on their code.
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Jul 30, 2011
I am using following code to read text from a .txt file. But I don't know how to perform search within file and how to read a specific line in the text file, based on search.
Dim vrDisplay = My.Computer.FileSystem.ReadAllText(CurDir() & "keys.txt")
MsgBox(vrDisplay)
For an example, if I want to read the line that contains the word "Start", how to do that?
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Dec 8, 2010
I have a filename SBSA_UPLD_20101208 and I am interested in reading the Last date part which is 20101208. How can I do it?
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Mar 30, 2012
I am using the following code to get an XML data from a website of mine:
Dim strUrl As String = "http://www.xxx.net/mobileApp/checker.asp"
Dim reader As XmlTextReader = New XmlTextReader(strUrl)
Do While (reader.Read())
[Code].....
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Jul 22, 2009
I have an XML file, shown below:
<?xml version="1.0" standalone="no"?>
<!--RISInsight server settings-->
<Configuration>
[Code].....
Is there a way that I can make it continue to read the XML file?
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Mar 16, 2012
I have this code and I have no idea why it's not working.
Using parser As New Microsoft.VisualBasic.FileIO.TextFieldParser("\server
etlogoncsvsstafflookup.csv")
parser.SetDelimiters(",")
[Code]....
I want it to read the left value in a csv, if it matches the username then the ADGroup sets to the right column (so we have staff name and then year group)
This code seems to be skipping lines though and not going through each one but I don't know why.
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Nov 13, 2009
I have a vb.net POS application which creates a CSV file (three actually) to store data for later import into a database. All is working well with that part. Details and what I would like to do now follows: A single row of data in one of these files looks like this:
11/4/2009 1:57:50 PM,fg5,1234,21.00,21,0,0,0,0,21.00,12345
There are 11, I will call them columns, in each row, with varying number of rows each day. I need to extract only the information in column 10 from each row and total these numbers. I could do this with a FileOpen(1, <fullpathtofilename>, OpenMode.Input) and an input(1,<variablename>(i)) for each row in a FOR loop. This seems to be cumbersome and a waste of resources especially when the file is very large. Is there a easier, shorter, better, faster (use your own expeditious adjective here) way of doing this? Is there a way to read only the 10th item in each row and for how ever many rows there are? Something like this maybe:
Dim i As Integer
Dim Total as Double
i = 0
[code]....
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Jan 12, 2010
I am making a browser in vb which can import IE favourites. Here is my code so far:
Dim favespath As String = Environment.GetFolderPath(Environment.SpecialFolder.Favorites)
Dim info As New IO.DirectoryInfo(favespath)
For Each fi In info.GetFiles
[code]....
But my code returns a load of HTML instead of the target of the .url file.
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Jul 2, 2011
I am looking to right a vb application that will read a cr2 file (cr2 is a images raw file) I want to be able to read the file resize it, save as a jpg, and auto post to my facebook albums (I have the facebook part done)
Someone has posted before [URL]..
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May 27, 2009
The way this file works is there is a null buffer, then a user check sum then a byte that gives you the user name letter count, then a byte for how many bytes to skip to the next user and a byte for which user file the user keeps their settings in.
the loop with the usersm variable in the IF statement sets up the whole file stream for extraction. However with almost the exact same code the else clause specifically the str.Read(xnl, 0, usn - 1) in the else code appears to be reading the very beginning of the file despite the position of the filestream being set earlier?
this is in vb2005
Private Sub readusersdata(ByVal userdatafile As String)
ListView1.BeginUpdate()
ListView1.Items.Clear()
Using snxl As IO.Stream = IO.File.Open(userdatafile, IO.FileMode.Open)
[code]....
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Sep 4, 2009
how to read a text file character by character in VB.NET??
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Apr 6, 2011
I'm trying to read a .txt file line by line, but Visual Studio doesn't like what im doing. Here's my code so far:
Private Sub LoadGenre()
Dim StrApplicationPath As String = Directory.GetCurrentDirectory() & ""
Dim inputStream As StreamReader = File.OpenText(StrApplicationPath & "myfile.txt")
[code]....
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