Reducing The Range Of A Bluetooth Device?
Oct 22, 2010
i am currently working on an application that reads the MAC addresses of all phones within the range of our bluetooth reader on the workstation. However, we would like to reduce the range of the reader to < 1 meter. I have dont alot of research and the only solution that i have found is a hardware one; i.e. changing the device to a class 3 or getting a custom made device that will have it's range adjusted to our preferences. However, i also know that we can adjust the power that runs through the bluetooth device in order to reduce the range. Is there any way that we can reduce the power of the device ? We don't have many funds atm and we're looking at a software solution and not a hardware one.
View 4 Replies
ADVERTISEMENT
Dec 23, 2011
I'm looking for an "auto-SMS VB.Net programme module" for window mobile 6.0 professional.my application will operate like below:1. User required pair his hp bluetooth device with his car bluetooth device for first.2. If the accident happened the car sensor will automatic trigger the car bluetooth device to trigger the sms button and send a SMS to a predefined recipient. (this scenario is same with Bluetooth headset, once you press the Bluetoth headset button, you can trigger the mobile phone call function automatically)The process of sending the SMS is 100% automatic, trigger by the car Bluetooth Device and without interception of any users.
View 14 Replies
Jun 8, 2011
I was wondering if there was a way to transfer a file to another device over bluetooth using vb.net.
View 1 Replies
Jan 10, 2011
im trying to configure bluetooth device with visual basic, i added my bluetooth device(wich is "bluegiga WT12") to my laptop and it was registed on COM7.In visual basic i created serial port object for COM7 named "bt", and i just want to test community sending a simple char:
bt.open()
bt.Write(1)
But when i try to send, it asks for pairing code, i checked on datasheet of my module and they say it is "1234", but when i put 1234 i get error.
View 9 Replies
Dec 19, 2010
i want create an aplication for find bluetooth device in around give me a sample if it posible
View 2 Replies
May 24, 2009
c# I want to display the bluetooth IP address of the smart phone or pda device that my software is on when a button is pressed in a message box.
View 2 Replies
May 5, 2010
how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...
View 3 Replies
Nov 13, 2009
A Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
View 2 Replies
Jan 27, 2011
I understand the basics of using VB.NET, what I don't understand is what I need to tell the computer to do. I'm supposed to create a subprogram to calculate the greatest common factor and another subprogram to reduce the fraction from the answers retrieved from the first subprogram. My teacher said something about using Mod to calculate it, and also attempted and failed to explain ByVal and ByRef parameters. I don't even know where to begin other than the parameters I have for each, and even those have a high chance of being completely wrong.[code]
View 1 Replies
Aug 30, 2009
I've been having complaints about my applications that they use to much memory.Is there a way to make them use less?
View 11 Replies
Feb 7, 2012
I am currently working on an asp.net web page with a GridView displaying a table from a database.This GridView has 4 DropDownLists that will be used to filter the data shown on the GridView. When the page loads 4 Sub routines are run, each one connecting to the database with a select statement to fill the DropDownList with relevant filter headings.
Initially, I had one connection with a loop that populated all of the drop downs but these contained duplicates. I then split the filling of each DDL so that the select statements could contain DISTINCT. I would like (and am sure there is a way here) to be able to populate all of the DDLs with data from one connection.
Code for one connection:
Protected Sub FillDepDDL()
Dim conn As New SqlConnection()
conn.ConnectionString =
[code]....
The other 3 column names: FirstName > DDLFN, LastName > DDLLN, Wage > DDLWag.This is only a test DB and the princibles learned here will be applied to a larger live project.
View 1 Replies
May 27, 2011
How would you go about reducing the code for this but still allowing it to work the way it is now
Dim updatelesson As String = cmbChange.SelectedIndex
Dim chosenlesson As String = cmbSession.SelectedIndex
Dim changed As String = lstNames.SelectedItem
[CODE]....
View 3 Replies
Apr 27, 2009
I'm generating a list of names from my database, but I need to validate them so they are no longer than 15 characters.
Dim Name As String
Dim txtFirst = "../../Names/first.txt"
Dim txtLast = "../../Names/last.txt"
[Code]....
I need Name to be no longer than 15 characters, and it doesnt matter if the name stays in tact, it just needs to cut off characters from the end of the string until its 15 or less.
View 2 Replies
Dec 23, 2011
In the process of creating an Icon object, I need to reduce the numbers of colors in an image from thousands down to 256 or less. I do this by "chromatizing" the RGB values - counting the colors - then re-iterating the process with heavier "chromatization" until the number of colors is reduced to my requirement.
I searched these forums and google on this subject to find out more - but I found that I alone call this process "chromatization" it seems. So I was hoping someone could help me out with the correct terminology.
Specifically, I want to use the correct terminology on my UI buttons (at present I have a button labeled [Chromatize] . .) and I am curious as to whether it would be good practice to "chromatize" the Green most heavily, the Red more moderately, and the Blue least . . . or just "chromatize" them all equally which is what I have been doing
View 2 Replies
Sep 14, 2010
I have a combo which contains a lot of different colours. If I press b it goes to the b's in the list and if I press it again it goes to the next b. Is it possible to jump to the colour as I type it so if I type blu it would go to blue. Currently it jumps to the first b when I type b but ignores the lu for blue.
View 4 Replies
Nov 6, 2010
Dim a as string = "a"
Dim b as string = "b"
Dim c as string = "c"
[code]....
View 11 Replies
Mar 2, 2009
Reading through "The Pragmatic Programmer", I've come across the DRY (Don't Repeat Yourself) and Orthagonal (keep code modular) principles.I have a suite of modules, some of which have common procedures. Because each module is a separate project in Visual Studio, up until now I have simply copied code from one project to another when 1 module (project) needs to do the same function as another module (project). This is when functionality overlaps, not when 2 modules (projects) do everything the same.
I always suspected this was bad practice (and have seen the fruits of my suspicions when the subs get out of sync), and the book confirmed me in this belief. So, what I want to do is make a central code repository for the 4 or 5 common subs, but I don't know how to do it.Should I make a .dll file for each sub I want to use in multiple places? If so, how do I do that? Is there another way to do what I want to do?
1. I have a subroutine that takes a filepath (and if disconnected also a SqlConnection) and loads the referenced file into a database as a BLOB.
2. I have 3 separate projects in 1 VS solution that all run basically the same version of this code.
3. I want all 3 to run EXACTLY the same code.
4. I want 1 version of this code so that any changes made don't need to be made in 3 places.
5. I have a few other instances like this for other subroutines.
View 8 Replies
May 4, 2009
How do I reduce flicker in a vb2005 panel?Inside the parent panel I have 2 other panels that I'm am using.
The outer most panel contains a background sprite and the two innermost panels are overlays that change to fit the places in the background sprite.When I change the overlay sprites I would like to reduce the flicker and make it a smooth transition from one sprite to the next.
Here is the code that changes the images in the overlay panels the overlay panel is not changed if the new value is the same as the old value
[Code]...
View 2 Replies
Jan 21, 2012
I've looked up ways to reduce the ViewState:
Viewstate Optimisations
Strategies for reducing ViewState size in asp.net
However, due to the situation I'm in, I need the quickest and most effective ways to reduce the ViewState size. The legacy system I'm working on is bloated and routinely has a ViewState that's 800Kb+ on multiple postbacks.
For example, I'm pretty sure populating drop down lists with 100+ items on multiple post backs is one of the culprits, correct?
Disabling the ViewStae entirely doesn't appear feasible. It breaks all of the controls, of which there are many, rendering the pages unusable. If this is the best approach, how should I go about handling all the broken controls?
View 4 Replies
Feb 17, 2011
I use the following code to fill the Table1 dictionary with the information found within the LINQ query.
Dim DB As New DatabaseDataContext
Dim Table1 As New Dictionary(Of String, Integer)
Dim Table2 As New Dictionary(Of String, Integer)
[code].....
View 3 Replies
Apr 4, 2012
I have managed to crunch down a several line code to this
For Each gal In galleries
With New HtmlGenericControl("div")
.ID = gal.Header
[code]....
I cannot find any where how to reference back to the object i am currently working with to add the control back to galleryContent' - Using plain me crashes the whole web server...Using does not offer the shorter hand of just using . - But it Using the only way to do it?
View 3 Replies
Sep 6, 2009
<Visual Basic 2005 + SQL 2005>I am developing an Human Resource system that has to have a pictue image for each employee. I can't ask HR person that takes a picture and reduce it to upload to the HR system.
View 2 Replies
Aug 27, 2007
Reducing Code Clutter When Using A ListItem Object
When using ListItem objects, the normal procedure is as follows:
[Code]......
View 2 Replies
Jun 28, 2011
I noticed that when using a single letter as the title on a tab of a Tab Control , the tab is bigger that it should . Look on this example :
The above Tab Control behaves normally because the text on each tab is sufficient to keep it big enough . The lower Tab Control , however , has its tabs too big . Is it possible to reduce its width ? I saw there is an ItemSize property of the Tab Controls , but unfortunately I can only modify the height of the tabs . No matter what value I set for its width , the width remains always the same (and larger than it should) ...
View 4 Replies
Oct 15, 2009
I have an application which I've developed which queries Active Directory information and stores about 15 properties into a Datatable which is kept in memory. I need to decrease the amount of "Commit" memory it is setting aside. The application stays active in the system tray and allows for quick searching of information along with pictures for users. I have a class, which is able keep memory usage down pretty low. It runs on a timer every 10 seconds and listed below:
[Code]...
View 1 Replies
Jan 11, 2012
I have a project in which I have to display a picture box based on:
Which radio box is checked
and
if a checkbox to make the picture box visible is checked. As someone who values clean, good code this is my code and it horrifies me. My question, is there some way to condense the following using cases or some other construct I don't know in VB.net?
If CheckBox1.Checked = False Then
BooksPictureBox.Visible = False
MusicPictureBox.Visible = False
[Code]....
Note- all the images stack on one another, and all of them start without being visible.
View 3 Replies
Apr 18, 2012
I have an ArrayList that stores 100,000+ numbers inside of it. Each number is 10 digits in length or smaller. The program itself has data input into it, of which it loops through the user input to see if any of their numbers are already in the array using if ArrayList.Contains(userinput).
It would appear that when having an ArrayList of this size a LOT of memory is being used. Would there be a faster way to run this, E.g. Database or If TextFile.Contains(Line)?
View 3 Replies
Mar 19, 2012
Is there an easy way to edit the code below so that it copes (works the same) if the embedded resource is not a plain text file, but a compressed text file?
Dim tempList() As String
tempList = My.Resources.ENABLE.Split({Environment.NewLine}, StringSplitOptions.None)
For Each strWord In tempList
enableFullList.Add(New Words(strWord))
Next
I have seen System.IO.Compression but can't work out what to do, DeflateStream, GZipStream etc.
View 6 Replies
Nov 29, 2010
Im trying to enlarge a circle on a form using a scrollbar.I have managed to do this using the following [code]Thing is the code draws a circle on every scroll movement. You end up with a mass of circles. I want it to clear previous graphic and just show the circle that relates to the current scrollbar graphic, giving the impression of enlarging and shrinking.
View 3 Replies
Dec 14, 2009
I am using the following code in the Load method of a VB form to generate random numbers in the range 1 to 8. Without fail after enough loops the range is exceeded and 9 is the random number returned every time. The line using the Rnd function is from: Rnd Function (Visual Basic)
[Code]...
View 8 Replies
