I'm looping through items in a listview. For each item, it deletes a file containing information stored and re-writes it with new information from the listview item.
View 5 RepliesI know I'm not the only developer experiencing this issue but only within the last month I started receiving Visual Studio 2010 hangs while running running a simple ASPX web project within the IDE. On stopping the execution or closing the web page VS2010 hangs and becomes completely unusable - stating that VS is busy. It never returns and I have to stop the DEVENV process, resulting in a complete shutdown of VS.
Until now (1 1/2 years) I've been developing a Winforms application with no issues, other than VS2010 IDE errors that have been documented and I've been able to work around. Now, like my Web project, I am also experiencing the same hang but not as frequently. Other documented cases is this forum don't apply in this case since I'm not working with an IIS web site.
Additionally, in reading the forum messages I notice this issue has been around for years and has caused a great deal of grief and delay to many development projects. I'm running Win7 Pro, VS2010 pro on a Pentium Dual-Core CPU 2.20 Ghz with 4 GB memory laptop running in 32 bit mode. I'm very concerned at this stage of the process to upgrade to VS2010 SP1 since I've read too many horror stories online and can't take the risk of affecting the only support environment i have for Winforms application that is currently in production
I am constructing a program, i am new to Visual Basic, but i have past programming experience. I was wondering if anyone knew how to form a loop that could...lets say calculate the answer when two numbers are added together,and it would repeat this thousands of times, etc. And if there is a way, would it be possible to calculate the time taken to complete this loop.
View 5 Replieshow to wait for a second inside a loop?
This is what I tried (including everything else in my form):
Public Class test5
Public z As Integer
Private Sub test5_GotFocus1(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.GotFocus
[Code]....
I am coding a desktop monitoring system,which the server send a keyword to client,then the client will reply with the information and the screenshot. my problem is when the client receive the request message ,in that instance the client will capture the screen and then send the pic,there isa GDI+ error,which i think because while saving the captured picture,it will send the file.How can I instruct the program to finish saving the file before sending the image... this my code :
[Code]...
I have a button in my application that starts a function to play sounds. But when the function starts a have a problem that my application stops working until all the sounds are played. Then a want to display a waiting screen to show the status of the current application. To this i thought to create a new thread to open the waiting window and then show the messages. But i have a problem that when my thread finishes, it closes the waiting screen. I tryied to put a loop inside my thread, but this crashes my aplication until the loop condition is satisfied.
View 2 RepliesI am playing with network sockets as I need to work on a client-server application. So I have tried this simple code from VS help:
Code:
Dim tcpClient As New TcpClient()
'The following line do not belongs to original code 'But I needed to add it as debugger told me that 'I couldnt getStream from closed sockets
tcpClient.Connect("127.0.0.1", 8000)
Dim netStream As NetworkStream = tcpClient.GetStream()
If netStream.CanWrite Then
[code]....
So, I supposed that the code above would write the message to the loopback IP (127.0.0.1), it would be kept in the network buffer and would be spited out when it readed the same loopback IP. However, when it gets the line whre it should read the stream, the program just stalls and keep reading it forever. I have tested the stream with as if it was just awaiting for something to read. I have tested the stream with getStream.DataAvailable and it returned me False, what makes me guess that the data is NOT being properly written to the IP.
Firstly I thought that it could be something with the loopback IP, then I tried to provide the machine local IP (192.168.2.25) but I got the same behavior: code stalls...
I am having problem with the coding of this (endless loop) and formatting of summary boxes before tests are complete that should not happen. (the overall goals is to have a separate validation procedure that does not calculate or dat displays are not performed until after call function is complete and valid. The validation that takes place are that two boxes are filled in - one is text and the other is a numeric value. (using vb 2008)
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I don't know why calling another function inside the OnUploadedComplete does not work in ordinary way, It's my code:
ASP.NET code:
<asp:AsyncFileUpload ID="AsyncFileUpload1" runat="server"
OnUploadedComplete ="UploadFile1"
OnClientUploadComplete="uploadComplete" ThrobberID="myThrobber"
onclientuploaderror="uploadError" CompleteBackColor="White" />
VB.NET code:
Protected Sub UploadFile1(ByVal sender As Object, ByVal e As System.EventArgs)
'saveing file on disk, this part works fine, but calling
'myfunction() does not work properly
[code]....
Hi. what is the difference of sleep function and pause function (using timer) between a loop.
View 12 RepliesHow do i use a while loop and MID$ function instead of the split function?
i'm trying to have the input (textbox) compared to a list(array) in a text document
A common mathematical function is the Factorial function. The factorial function takes an integer input of "n" that is greater than or equal to 1 and computes n* (n-1) * ... * 2 * 1. In mathematical texts, factorial is denoted with an exclamation point, as in n!.For this exercise,write a function called Factorial that takes a single Integer input and returns an Integer corresponding to the factorial of the inputted parameter. To help get you started, your function will look like this:
[code]...
After you have written this Factorial function, add a Page_Load event handler that calls the function, displaying on the ASP.NET web page the values of 1! through 5!.Hint: The Factorial function will need to contain a looping construct from 1 to n, where, at each iteration, a variable is multiplied by the value of the looping variable.Now I'm not asking anyone to solve this for me but rather if you could help me understand how I should go about it. I'm not really understanding how I would loop and increment this function. Would I make the variables 1! through 5! equal to the given values and have them called to the equation and then loop it and increment it as so? I'm not even sure I'm thinking this out correctly.
I am calculating the average of an array(double) using a known (smaller) array of integers, which contains the indices for the larger array to give the values for the average. Below is the function:
'
'NumLoops = Ubound(LookupList)+1 !
' i always >0
Function Mean(ByRef Y() As Double, ByRef LookupList() As Integer, ByVal NumLoops As Integer) As Double
Dim res As Double
[Code] .....
Stand alone performance (through a win32 project) form is very good for my project. e.g. a Y() = 50000 entries, LookupList=1000 entries, calculating the mean 1000 times take about 5 ms.
That beats a c++ function accessed through a rcw quite easily (takes >300ms). However, when I plumb this function into a larger project the performance drops off significantly, taking (typically) 50ms for the same test. Also if (say) I make Y bigger (say, 100 000 elements) with everything else the same I see a tiny overhead in the stand alone test (of order 1 ms), yet I see a close to linear increase in the calculation time in the larger project. The larger project is not so big (a few MB) as to make we worry about resource constraints.
I am fairly new to VB and I am struggling with not using the Reverse string.I need to take a persons name from a text box and print the name backwards in a label using lop and the MID function.I have this, but it doesn't use the MID Function, how would I change it.
Private Sub convertButton_Click(sender As System.Object, e As System.EventArgs) Handles convertButton.Click, ClearToolStripMenuItem.Click
Dim Name As String = ""
[code].....
I have a random function and a for loop which sets those random numbers to an integer
For i As Integer = 1 To 4
nums(i) = Randomfunc(0, 100)
Next
[code].....
I'm a newbie in VB.. I'm editing a file that sets the click-able area of a button in a game.
[Code]....
i made this code
VB.NET
Dim iString As String
If My.Settings.IPBank.Count = 30 Then
MsgBox("You alredy have the maximum amount of IP Addresses stored, delete one to add another.", MsgBoxStyle.Information, "Program Error")
[Code]...
I want it to check all of the items in the my.settings.ipbank which is a stringcollection. Before it adds and if it already exists in my.settings.ipbank then i want it not to add it. But it just adds when i run it. And then once its added it says: "Collection was modified; enumeration operation may not execute." But also before i run it. There is a warning saying: Function 'AddTo_IPBank' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used. Is this something to do with it? I think i have the Next in the wrong place .
I'm using a DO interation to loop a function I'm using to test for internet connectivity. The code is working fine, except that when one of the tests is satisfied the loop stops. I want this to continue in the background while the program is running. How can I get this to work?
Private Sub checkInternet()
Dim InetChecker As Boolean
InetChecker = CheckForInternetConnection()
Do While LabelCount.Text <> ""
Thread.Sleep(10)
[Code] .....
I'm trying to make a simple game tree.Previously I used nested loops:
[Code]...
I want the program to display the text "Waiting for connection..." while the program is actually waiting for a connection. However, when I run the program, the form doesn't even appear because the TCPListener is waiting. What can I do to have the program appear and show the text while it's waiting for a connection?
Imports System.Net.Sockets
Imports System.IO
Public Class frmMain
Dim client As TcpClient
[code].....
I am descending all the directories of my C drive to get a complete list of all extensions.When I get to: C:Windows.oldDocuments and SettingsAll UsersApplication Data
the program goes into a loop: C:Windows.oldDocuments and SettingsAll UsersApplication Data Application Data Application Data until the path exceeds maximum length (248 characters for the directory).
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I would like to be able to save to a db and send task to email or as text msg for instance nevermind that.. I have two variables of type ArrayList they are "_mList1" , "_mList2" and "_mList3"
_mList1 stores the list of Telephonenumbers , _mList2 stores the list of StaffIDs and _mList3 Some concatenated string.
theses variable lists will hold some data in runtime as explained and i would like to use them to populate a DB table again mentioned
tblTask (TaskID(PK), Action, StaffID(FK), AssignedBy, TelephoneContacted, NotesCotent)
tblStaff (StaffID(PK), FirstName, Surname, Telephone, Address etc..)
[Code]....
I should use the Timer_Tick function, to loop a data read from a COM port. The object i call uses a method that closes the thread after a fixed timeout.
obj.Read(N byte) //--> if no data come within 500ms close the thread
My question is: considering that the Timer_Tick function will be called every (for example) 100ms, How long does the total execution last? Timer_tick time + Thread Timeout (100ms + 500 ms = 600ms) or just the Timer_Tick time (100ms) causing the anticipated thread closure/crash?
I am using the following code to get distance between two propertys. The problem i am having is each Distance Calculation is being obliterated and I am only geting back the last Calculation instead of each calculation/distance
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I have a sqlite table with following fields:
Langauge level hours
German 2 50
French 3 40
English 1 60
[code]....
I want to loop through the records based on language and other conditions and then pass the current selected record to a different function.So I have the following mixture of actual code and psudo code. I need help with converting the psudo code to actual code, please. I am finding it difficult to do so.
Here is what I have:
Private sub mainp()
Dim oslcConnection As New SQLite.SQLiteConnection
Dim oslcCommand As SQLite.SQLiteCommand
Dim langs() As String = {"German", "French", "English"}
[code]....
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
How to Make a Waiting while Processing? I mean I want when the software processing login into my Online database, the Button1,TextBox1,TextBox2, LinkLabel1,LinkLabel2 will hide and the Waiting Picture is show,
Here is my code :
Button1.Visible = False
Button2.Visible = False
TextBox1.Visible = False
[code]....
But when i click the button 1, the Button1,TextBox1,TextBox2, LinkLabel1,LinkLabel2 there hide and PictureBox1 Show when MsgBox show "LoginFailed! Invalid Username Or Password" I wanna make the Button1,TextBox1,TextBox2, LinkLabel1,LinkLabel2 hide and picturebox1 show after that Process the Login Verification Into database.
I keep trying different things I find on the net, but I can't get VB.net express to wait for exit. Hopefully someone can point me in the right direction here. Here is my code and all of this works but there is no way to tell when mugen stops.
[Code]....
I am a VB6 coder and I'm making the move to VB8 / VB.NET.I know how to wait in VB6, but my problem is that I don't know how to wait in VB8/VB.NET. I have a TextBox called textbox2 that contains the number of seconds I want to wait. I used to use wait 60 in VB6, but of course VB2008 is different.
View 5 Repliesbasically what im doing is something similar to this;
Private Sub FirstRoutine()
'This is my first routine, i load a listbox up with a whole
heap of info
[code].....