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.
View 2 RepliesI have a winform, VBExpress 2008 with a single button and this code behind it to illustrate the problem:
CODE:
When I select a file (in my case small PDF's) I am getting a 3 to 6 second delay after selecting the file until it goes on to the next statement, in this case a MsgBox.
If I repeat selecting that same file a second time, I don't get the delay. But, if I exit the program and re-start it, then I do get the delay again (one time). After the first one hangs it looks like it hangs about ever 7 to 9 tries and the window says "not responding" for a few seconds. I don't have this problem on Vista or XP.
If I select the same file over and over, it might hang the 1st, 2nd and 12th time. Close program try same again, this might be the 1st, 3rd and 9th time. Never the same - as if it is running out of resources and clearing a cache.
I've watched the task manager during the delay and don't see anything unusual coming up. I have a new computer with everything operating properly. I thought maybe it was my Norton Internet Security -- but I turned that off and it made no difference.
How I might trace the source of the delay to the bottom of it? I've tried everything I know to isolate the problem and am running out of ideas. I don't see any other posts about this particular thing.
I have a psychology experiment that has users respond to specific text or pictures by pressing either a button for "similar" or a button for "opposite" and then the program records the time from the presentation of the stimuli to the time they press one of the buttons as the latency. I have the information ans some other data successfully exporting to a text document but would like to have just the latency data also go into an excel spreadsheet for easier analysis. Here is the code for one of my buttons that currently writes to the text document:
[Code]...
i have a very regular problem with MS Access showing random results when being written to from Visual Studio 2008. It happens on all computers including the development machine, using Vista or XP, VS 2005 or VS 2008.Is there a VB.Net flush command I can use before reading the data ?.I write data to a table and then immediately go to read that data.I can make it work if I wait up to 3 seconds before I read the data after a write, using a sleep command. Unfortunately 3 seconds is way too long.Are there any known problems with writing data to MSAccess 2003 from .Net, using VS 2008, VB.Another weird thing that happens is that only half the data is there if I write to an Access table and then go to read it immediately. Sometimes the data's there, sometimes not, with the exact same code and data.
Sometimes the whole table fills with the data from the first record.This is happening throughout my code. Anywhere there's data being written to Access there's a problem if I go to read it immediately after.Sometimes the Access table is blank, even though data has been written to it, and then on a second run of the exact same code it comes good, or gets half the data or every record is a duplicate of the first record. The code is good, so it's not a coding problem, and I can run the exact same code and get good results. So it's definitely an intermittent problem.I run all my access writes through the same code. The part of the code that writes the data is "command1.ExecuteNonQuery()". Whether I read the data from a datatable or as a merged word document, I still get the same problems. So I'm guessing that there's a problem
[Code]...
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?
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.
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?
View 2 RepliesI 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
View 2 Repliesim 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?
View 4 RepliesI'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.
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).
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.
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?
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?
View 8 RepliesNeed 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
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?
View 3 RepliesI am creating a windows mobile application .I have an extraordinary amount of if/else statements, I have tried the switch/case statement [code]...
View 1 RepliesI 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.
Is there anyway of reducing the opacity of a form to 80% but at the same time have my buttons and text boxes to remain unhindered at 100%? When I reduce the opacity of the from the opacity of the text boxes reduce as well. How could I stop this from happening
View 5 Replieshow to reduce file size? for example : i have a video file that size 13MB now, i want to make the video become 500kB even if the video become shorter thant the original. because i just want a little size of it.
View 6 RepliesI have a system in VB.Net 2003, and that system takes a very long time to load. From the minute I click on the EXE, it takes one minute before the log in screen appear (P4 with 1GB RAM, no other application running). The size of the EXE is 33.2MB. I think the problem is the way I code the program, 1) I declare all the form as obj when I first load the system and I've got over a hundred forms. I try to load them as I need them but it does not work cause forms with sub form would give me an error. 2) I am using dataset as we know dataset is not very efficient but I don't know how else to connect to the database. Is there anything like ADODB in VB6?
View 2 Repliesi need to reduce an amount of time by x% this is what i have so far [code] as u can see ive taken the hours minutes seconds from the time and stored each in a seperate variable so from 02:30:00 i then divided the hours by 60 and then 60 again to give me the total seconds in the hours and then divided the minutes by 60. i then added all 3 to give the total amount of seconds so now the buildtimetotal variable now holds the total in seconds i now need to reducce this by x% all vars are dimentioned as integers except for buildtimehoursback which is a double the problem seems to be when i try to convert the total seconds back to hours minutes seconds.
View 3 RepliesI'm using the code below to convert the file size in bytes (test file is 31718 bytes) to KB (30.974609375 KB) but I want to display this to one decimal place (i.e. 30.9 KB). How would I do this in VB.NET?
View 3 RepliesIs there any way to reduce the size of a .pst file using Microsoft.Office.Interop.Outlook(programmatically start PST Compaction)?
View 1 RepliesI am using a DataGrid in VB. I have to reduce the default height of a row. How might I do this?
View 1 RepliesI am using VS2010 and have an application that lets the user search for an image to store on a SQL database. I want to be able to reduce the size of the image when it passes certain size for obvious reasons.
View 1 RepliesHow to reduce form flick?
I have a tab, which has an image in it. When an user double click, I need make the panel in that tab invisible and show another image (within the same tab). I finished it. but when I make the panel invisible and image visible, the screen flicks, and it shows a black background tab for a about 1/2 or maybe 1/4 seconds.
I have a school project. by selecting an item from combobox it will show 2 pictures and 2 labels. I used a select case first but it didn't work; only for the first item ;do i have to make every pictures and labels invisible which are 30 controls and repeat it in every index? I try the if else but it did not work too.[cod]
View 4 RepliesI found what seems to be an easy and effective way to reduce the memory consumption of my vb.net app. What I need to know is how "correct" or "proper" is the method I'm using for my application and what exactly is going on behind the scenes that I should worry about? I want to release memory every time a form closes. Here is how I reduce the required memory of my program:[code...]
View 7 RepliesI created setup file by setup project. I attached with mdf, ldf files in it , SO CAPACITY OF IT AFTER PACKING IS QUITE BIG.I want to reduce its capacity. How can i do that I see some other Setup projects which have attached with mdf ,ldf files but It is not big as SetUp file of me.
View 2 Replies