I wish to send a string held in a var to an IP address and Port number both also held in vars. I also wish to listen to a signals coming in on a particular port number so when particular strings are received I can trigger other transmissions.
View 2 RepliesI have aproblem with WebBrowser Naviagtion.I would like to navigate to URL that is held as a String in an Array...IF RadioButton.Checked Then WebBrowser. Navigate (Array(0, 0))
View 7 RepliesI am writing a VB.NET application which needs to extract data from an XML document. The Dataset.ReadXML function would be suitable, if the XML document was held in a disk file. However I would prefer the XML document to be passed via a string property of my class object, not as a disk file.
Is there a way to make the ReadXML function take its input from a string instead of a file ? If not, are there other functions which can be made to parse XML which is held as a string.?
suppose I have variables named A1, A2, A3 ... B1, B2, B3 ... Z97, Z98, Z99. I have a certain operation I want to do using each one in turn. I CAN write a line of code for every single variable, but this will get pretty tedious. I'd prefer it if I can make a function that takes the letter and the number as arguments. So, if it gets the arguments "E" and "10" it will perform the operation on variable E10. What is the syntax for this? say a simple operation such as: result = E10 * 3 Is the syntax any different if I use constants instead of variables?
View 3 RepliesWrite a complete Visual Basic program to do the following: Joe's Pizza Palace needs an application to calculate the number of slicesa pizza of any size can be divided into.
The application should do the following:
Allow the user to enter the diameter of the pizza, in inches.
Calculate the number of slices that can be cut from a pizza that size.
Display a message that indicates the number of slices.
To calculate the number of slices that can be cut from the pizza, you must know these facts:
Each slice should have an area of 14.125 inches.
To calculate the number of slices, divide the area of the pizza by 14.125.
The area of the pizza is calculated with the formula: Area = π r2
Note: The π is pi which is equal to 3.14159.The r is the radius of the pizza. Divide the diameter
by 2 to get the radius.
Form:
The application should be done form-based. You may design your own form. It must have the following:
a label indicating that it is Joe's Pizza Palace
a field with label to enter the size (diameter) of the pizza
a field with label to display the number of slices
buttons to calculate the number of slices and to exit the application
Output:
Use the following test data to determine if the application is calculating properly:
Diameter of Pizza Number of Slices
22 inches 27
15 inches 13
12 inches 8
Requirements:
Name the project Pizza.
Be sure to include your name included in a comment
No credit is given for a program that will not execute.
All rules of academic integrity should be applied as stated in the syllabus.
Submit the zipped project into Moodle.
I have errors saying "With Held " events
WHAT IS WRONG WITH what I HAVE
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button3.Click
' End the application
End
End Sub
[CODE]...
Well i've been trying to make something run with a lot less code(and faster) but it seems with SendKeys some things are getting lost(or discarded) by the program, its only the arrow keys as I try & make it complete a pre-defined maze to see how fast it can be completed.
If I use SendKeys("RIGHT 8") for example the maze usually only moves a few times, sometimes maybe only 1.
Also I looked up how to hold a key down/simulate it but it's not working for the arrow keys(untested on other keys).
The only way i've made it work is delays, decently delayed like 200ms & it's a huge maze but if i hold a key manually I can go much faster yet sendkeys method can't go that fast using individual presses this is why I want to simulate a holding down action.
---it must be working xample code I can make it work for my purpose if it works like on button click, etc....but I tried copying full (supposedly working) codes before & they never worked for me/my key, xample cause i've looked & tried hard(with only failing results).
MORE INFO:Also I tried SendKeys.SendWait() which is meant to wait for keystrokes to be processed & that didn't help either so my best guess is the keystrokes are processed but discarded(like a movement delay code that doesn't queue movements but rather ignores extra movements)
I have a sim card reader, that is a usb-to serial device. It has a sim card inserted. what i need to do is access that sim card to get the data, phonebook and sms for example. I CAN connect to the reader but i cannot send any commands or recieve any data.
What are the commands i could use to access data held on the device. The chipset is pl-2303
I can't seem to get a single form that is held in a dictionary(of integer, <Form>) to create instances passed 229 times.
For instance i can only open 229 instances of the same form. I open and close the form. So technically i open 229 forms and close 228. Any forms opened afterwards give a win32 exception. I clear the the dictionary key upon form close.
I have changed the dictionary declaration to (of long) but get the same issue.
I have a little problem with my program, Boot Animation Previewer.Firstly, it loads the .zip file and extracts the boot animation in a folder called Temp. If there are existing files in the Temp folder it deletes them. But, once the boot animation is previewed, you can't select another boot animation, until you restart the application, because it gives an error, saying that the program can't delete the images, because the process is using them
View 2 RepliesI need to run an If Statement that will check a few conditions.
Basically I want to get it to check a value held in a variable "Temperature" and if the value is within "1" eaither way i.e. +-1 of the value held within the variable to then to output a text string to Label200.Text Else if the condition is not met then out put another text string to Label200.Text.
Example:
Say if Temperature value held in the variable Temperature is 8.5 the if statement checks to see if the DewPoint value is "between" +-1 of the temperature value. i.e. 7.5 to 9.5 as well as the value in Humidity is equal to or greater than 90 and Pressure is Less than or Equal to 1013.25 then the conditon is met, else the conditon is not met.
I have put some code together below in NotePad++ to see if what I am trying to do is the correct way to go about it (note I have not yet tried this code in VB.NET as I don't have it at work).
pass comment on the code and if it is wrong explain what I should do to get it to work.
Dim DewPoint as Single
Dim Temperature as Single
Dim Humidity as Single
[Code]....
Firstly, it loads the .zip file and extracts the boot animation in a folder called Temp. If there are existing files in the Temp folder it deletes them. But, once the boot animation is previewed, you can't select another boot animation, until you restart the application, because it gives an error, saying that the program can't delete the images, because the process is using them.
My question is: how to stop using the images? I've tried to dispose the form that loads the .zip file, but with no success.
I'm trying to Export a RDLC report into a PDF file and email it as an attachment with the click of a button.
My issue is that I get A required privilege is not held by the client error in the following code.
On this line Dim fs As New FileStream("C:\TEST", FileMode.Create)
I Have Administrator Privileged on a Vista Machine.
Dim warnings As Warning() = Nothing
Dim streamids As String() = Nothing
Dim mimeType As String = Nothing
[Code]....
I know how to send keys using Sendkeys.Send("{RIGHT}") I even know how to use Send keys In a timer, to repeat the key press... But it's just a key press, and it lets the key up. So If I tried to put sendkeys.send("{RIGHT}") under a Timer, then it will press/release the Right Key. I don't want that. I want to HOLD THE KEY DOWN. Here's Some Code, that I know how to do that Simulates a Mouse Click, Left Down, AND Left Up. Mouse Click. Ok...? So here's some example code of how to Send a simulated Mouse Click.
EXTREMELY EASY, BUT EXTREMELY POWERFUL CODE. Simulated Mouse Clicking.
Public Class Form1
'To allow to detect keyPresses. latter on in your code.
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
[code]....
I have a number of files that are generated in a function defined as:[code]These files are immediately printed and the files are automatically saved to a directory; the files themselves are not for use by the actual software users. I timestamp the files to keep them uniquely identified for auditing purposes.I've now received a requirement to email some of these files externally to the company, and someone has complained that the current filenames are not user-friendly.So, I tried copying the generated file to a temp directory, with a friendlier name, emailing the friendlier file, then deleting it, leaving my audit trail intact, like so: [code]This throws a System.IO.IOException on the line System. IO.File. Delete (friendly FilePath) because the file is still in use, after it has been emailed.I've taken out the email code, which makes the copying and deleting work fine, so it's apparently attaching the file to the email which causes the problem.I've also tried breakpointing before the delete line, waiting five minutes, confirming the email has been sent, then advancing the code, but the same exception is still thrown.
View 3 RepliesI'm trying to make a database program in VB 2008 and have come across a problem with a query that I'm not sure how to solve. I have a combo box which contains names of teams that are held within the database, when a team name is selected I have 4 queries that will separate players (in that team) by their position, using this information I will then be able to display information about the players in a collection objects so that it can be edited and what not.
My problem is that I need to be able to refer to the records in the query so that I can assign a players details to objects on the form, I've used a piece of code to do so that I used previously to select individual records from a table, however when I click on a team in the combo box it throws up the error: "Could not format node 'ClientQuery' for execution as SQL.". Not being a particularly experienced VB programmer this error doesn't exactly mean too much to me, although I am not exactly sure of another way to tackle the problem.
The code for this query is:
Dim GK(3, 2) As String
Dim c As Integer = 0
For Each Record In GoalkeeperQuery
[CODE]...
All the fields in the query are strings. If this is not enough information I can post the query I used to select the records in the query used above or anything else that's related.
I am trying to implemented a custom dragging operation to sort panels.
I assign an object to a variable in the MouseDown event and track it's relative position by examining the MouseMove event of the neighbouring panels as I drag the mouse over them.[code]...
I have a picturebox set to move when the arrow keys are pressed. How do I prevent it from continously moving if the arrow key is HELD DOWN. I want to make it so the user has to press the key each time manually to move the picturebox.
View 14 RepliesI would like to detect the Address and Port number of the Parallel Port in computer.
View 4 Replieshow to create a program that can access information held in an excel database and show it in a simple form.
View 2 RepliesI have 2 winforms, one acts as server (ie Winform:Server role) and another one as client (ie Winform: Client role). In my LAN setup, there are 6 PCs and these PCs connected to each other via a 8-port switch and each PC has more than 1 LAN card.
There is one PC running [Winform: Server role] and 5 others running the [Winform: client role]. In [Winform: Server role], I'm using following code to obtain local ip address and port number and the [Winform: Server role] will listen to all incoming TCP requests according to these auto assigned ip address and port number.
Dim Listener As System.Net.Sockets.TcpListener
Dim Client As New System.Net.Sockets.TcpClient
Dim Message As String = ""
[Code]....
I need to clarify my intention. My current approach to my intention maybe incorrect. I attempt to create a 'zero configuration client-server networking' and that is plug & play. The server will know where the client and vise versa. I know there is a program (i.e. MaxiVista) has done that exactly.
MaxiVista has 2 applications, i.e. server and client. Users only need to execute the server application in PC designated as server role and execute the client application in another PC designated as client role. Then the server will be able to find all executing clients in the same LAN.
My intention is just that. Plug and play 'zero configuration client-server networking' within the same LAN.
So I would like an email program that within the code already has the from email adress, gmail. I would like it to let you enter the number of emails to send to the address that you enter, not the one in the code. Also I would like it to be able to enter the message.
View 2 RepliesI want to upload and download a file to FTP over ssl with custom port number or FTP with implicit SSL. I am using .net ftpwebrequest & ftpwebresponse method for this. here is my code:
[Code]...
I am trying to send a control string from VB.NET to a serial port. I am using a pololu trex jr. on the receiving end of the serial port. I have attached a copy of my current code which compiles without errors, but fails to send data. I can tell that it is not sending data because I have a light on the control board connected to the port and it normally blinks when data is received. The program that came with the board drives it perfectly but does not serve the purpose I need it to. I am open to any suggestions as I eventually plan to write a class to contain the control routines.
View 12 Repliesi knew Serial ports are a type of computer interface that complies with the RS-232 standard. They are 9-pin connectors that relay information, incoming or outgoing, one byte at a time. Each byte is broken up into a series of eight bits, hence the term serial port.And I want to write a program chatting through Serial Port.
View 3 Repliesim very new to visual basic. as in i just started 2 days ago. Currently i have a little program written up that has a couple of radio buttons and then a submit button. when you select a radio button and click the submit button, a little message box with pop up and say "you selected such and such"
Well now im trying to make something that will send a string to arduino through the usb cable. Basically it will use the same set up as stated above but instead of a pop up message it will just send the string through the port. for example Radiobutton1 - when selected and submit button pressed will send "1" (no quotes) through the serial port Radiobutton2 - when select and submitted will send "1" and then maybe "3"
and so on and so. Some radio buttons will only send 1 string through them and some may send multiple. Now, i dont need help with arduino, i have that already set up to wait for the strings to come through the com port. just need to figure out how to do it in VB.
SocketException was Unhandled: Only one usage of each socket address (protocol/network address/port) is normally permitted I get this error every time i click collect a second time.
[Code]...
How can i send byte/signal/puls usb port?i want to this
View 3 Repliesafter slicing and dicing, i got 2 vars with the following values in vb.net:
strTag = "<#<span class=SpellE>vermittler_person_Name</span>>"
tmp = "<#<span class=SpellE>vermittler_person_Name</span>>"
Comparing the vars gives a false:
strTag = tmp ' ==> false
Comparing the values directly right there gives a true:
"<#<span class=SpellE>vermittler_person_Name</span>>" = "<#<span class=SpellE>vermittler_person_Name</span>>" ' ==> true
Both are strings, i tried all kinds of stuff: string.compare, string.equals, also regex etc. etc. everything works perfect with all the other strings with simlilar structure, just not and only not with "vermittler_person_Name" in the middle...
I need to be able to send a binary string such as 00000011 to a printer port using visual basic.
View 14 RepliesHow can I set a host IP address and port.. and then detect if the port is open (accepting connections)or closed (denying connections)I came across this while searching, but it doesn't seem to function all that well..Using the port 80 and the host [URL] The result it gave me was closed... which is obviously wrong.So what can I do?Code: ( I have also imported "System.Net" and "System.Net.Sockets" )
Dim host As String = "www.google.com"
Dim port As Integer = 80
Dim addr As IPAddress = CType(Dns.GetHostAddresses(host)(0), IPAddress)
[code]....