I am looking for an easy way to save the value of a variable when a program is closed. And then when it is reopened the variable has the same value as what it was previously when the program was closed. The variable has an integer value.
View 2 RepliesI am currently working on a menu driven console program that so far has 4 menu options of checking internet connection, decrypting/encrypting a message, calculator, and a logout, and i am wondering about a few current things.
1. How do i make it to where, when a program starts for the first time, it asks for a user to enter in his data, like signing up for a site for the first time?
2. How do i make it to where the program will save the data entered, and does not delete when the user closed the program.
3. How can i make it to where when a user signs in, his/her data is read correctly? Like an array search for a multidimensional array.For my "New user" sign data i created a function...
Function createNewUser() As String()
Dim name As String
Dim userName As String[code]...
I have two forms with a variable (x) that is set by a trackbar on the second form.
View 3 Replieshow do you save the value of a variable for later if the application is closed and reopened in winforms, vb.net?
View 2 RepliesMy program will need to store some settings for when the program gets closed then opened again. I would then like to reload the settings?
- Flat file
- Database
- Registry
- Other
in my Application Prime95 is opened for 60 seconds. i want to know how to make the test end if the user closes prime95.
* how to detect if prime95 is not running in short *
What makes it even harder is that I can't replicate this problem on my computer very consistently. Sometimes I will get the error but most of the time I won't. Basically what is happening is I am creating an IE object which my program then controls for a long period of time. What is happening is, if a user exits the program it calls oIE.Quit() then closes the program. This should close internet explorer and all processes associated with it.
But, the iexplorer process doesn't end up closing. Then when the user tries to run the program again we get this error "System.Runtime.InteropServices.COMException (0x80004005): Creating an instance of the COM component with CLSID {0002DF01-0000-0000-C000-000000000046} from the IClassFactory failed due to the following error: 80004005.".
To fix this we simply close the any iexplorer.exe processes that are open and it will let us create our i.e. object again. This happens also if the program crashes and they try to restart it. I am not sure what is causing this or if I am missing something that has to do with com objects. Here is some code although plugging in this code likely won't reproduce any errors:
'create ie object
oIE = New SHDocVw.InternetExplorer
oIE.Navigate("[URL]")
oIE.Visible = False
oIE.Silent = True
'kill ie object
oIE.Quit()
I have a program which when a button is clicked on a form sends the form to the back, so that Notepad can open on top, then it opens up notepad
Me.SendToBack()
System.Diagnostics.Process.Start("notepad.exe", myPath & "*********.txt")
Now what I want to do is to detect when the notepad has been closed then I can bring the form back to the front and I just do not know which commands to use for this to detect a program outside of VS 2010.
I want to call a function in asp.net with vb.net when browser is closed. But I want only browser close, not tag close and other.
View 1 RepliesI'm making a simple app that checks if Windows Media Center is open, if it is open and the program receives the close command from windows, make my application shut down the computer. I was wondering if this was the most efficient way of doing this:
[Code]...
My program will need to store some settings for when the program gets closed then opened again. I would then like to reload the settings, and I was wondering what is the best way to do this with VB?
- Flat file
- Database
- Registry
- Other
for example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
why when I am Closing the program by clicking on the X button, the NotifyIcon did not closed? it just stay there until I move my mouse over it....
View 5 RepliesI have written all that is required at this point and have published the program. I thought that global variables were saved when the program terminated but, as I found out, they aren't. If anyone has any way of making the variables keep their values between uses of the program I would be very grateful as if the program is being run for the first time some global variables need to be set straight away (I have done this code). The variable types are: one boolean and a few strings.
View 3 RepliesI'm trying to create a program, that upon opening, will read an input file containing a delimited employee record. The record will contain the name of the employee, their salary and the number of years they have been employed.I'm looking to display only the name of the employees in sorted order(alphabetically) and then when the user of the program selects a particular employee, I want to display the salary and number of years for that employee.I would like the user to be able to edit the recors for the employee and I would also like to have a way for the user to be able to add/remove an employee record and update the input file before the program is closed.
View 5 RepliesPublic Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
as the title suggests i am trying to save a randomly generated number to a variable.I have done:
Dim randomposition As Integer
randomposition = Rnd(1, 1000)
when i do this it gives me this error:
[code].....
I just need some sample code to save the blue values to an xml file as shown below:
textbox.size =48
textbox.font.colour = Blue
Saved to c:myfile.xml as
[Code]....
I am trying to have a textbox to enter a run time in. i.e. 10:32 (ten minutes and 32 seconds). I will then need to have an if..then statement like this:
txtRun.text = Run
If Run <= 9:12 then
RunScore = 60
[code]....
I have the following Public Class Payroll Private Sub DateTimePicker1_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.ValueChanged
[Code]...
and I'm trying to save the datetimepicker value as a variable to pass to a sql database. I'm just not sure what the datetimepicker value is, is it Me.DateTimePicker1.Value or is it dt?
how do i save data from a text file to different variable?i want to save each data from different rows and columns to different variable.[code]
View 1 Repliesthe problem - i have a list box, which i use to display info (obvs) but when i click on one of items in the list when debugging, i wondered if there was a way to store which one was selected in a variable?
dim selected as string
selected = 'vb variable for a click?
I have my rpg, still, first time working on it n ages, and I want each user to be able to set their own personalized picture background for the game...
each character in the game has its own dedicated folder for each file that the character has relating to it...
what I want to know how to do, is to have my game copy the loaded/chosen background image to their respective characters data folder, and have the game reload/reset the games default background image, to the one piced by he player...I am having a hard time figuring out how to do this however...I've tried a lot of different things...and nothing is working yet...
here is my example code right now:
[Code].....
Currently, I've encountered a problem where I do not how I can store the variable of my battery level in a text file. I tried .xml and .txt file and it returns me text which can't be read.The code related:
vb.net
[code]Dim psBattery As PowerStatus = SystemInformation.PowerStatus
Dim perFull As Single = psBattery.BatteryLifePercent
[code]....
The place where I do not know what to insert is the "Insert Battery Percentage Here" part so I guess that's the problem.For your info, if you were to use a MsgBox to display, the code which displays that would be <MsgBox("Total battery power remaining: " & perFull * 100 & "%")>
I want to hear some discussion regarding what is the best way to persist program parameter and variable settings from one run of the program to the next. I used to often use the ubiquitous INI type file in VB6 programs but I am aware that these are not formally supported in .Net programs. I also have a major aversion to adding to the already overwhelming bloat of the Windows registry by using that to store values.
[Code]...
Okay, i have this program that gives the user some settings that need to be saved and loaded when the program runs. Can anyone help me with this?
View 15 RepliesI am using this code of VB.net.
Filling Data Set, Assign DataView, Navigating Record.
Every things is going fine. but permanently record is not updating (Saving) in SQL Server Express.[code]...
I am trying to write a code that lets you open a text file and display it in a text box. I need to make it so that when the user tries to close the program it will ask them if they want to save any changes made to it.
View 3 RepliesHow can I combine specialized string collections so that I can accomplish this :
-Save all the tab's texts from a tabcontrol
-Save contents of the tabs : eg.Every tab contains a label and I save the text of each label
And the real problem:
-Loading them when the program opens
I have made some thoughts about saving them, but not about loading them
setting.TabNames.Clear()
setting.TabLabels.Clear()
For Each item As TabPage In TabControl1.TabPages
Dim name As String = item.Text
setting.TabNames.Add(name)
[Code] .....
I've seen used the datagridview to save the changes.
I don't use a dgv, but rather I connect directly to access and when a text field has text in it, it takes that text and searches, and updates various text boxes with the according information (finds a row, and takes all the data in the columns and adds it into their respective box). There are approximately 5-7 text boxes being used at the same time, and only a few will be changed.
How would I go about updating and saving through the VB program?
Here are some relevant pieces of code:
Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data source=C:\InventoryMusic.mdb")
[Code].....