im wanting to make my program have to enter a serial and you dont have to enter anymore (Only once) if you want the full version, i have some code here, but i cant seem to get it to work properly, this is the last piece i have to do and its finished.
Code:
Private Sub KryptonButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KryptonButton1.Click
If KryptonTextBox1.Text = "" Then
[Code]....
i just want to make a program with first form to enter the serial if correct just continue to form2 if incorrect just a popup say like "Serial Incorrect" how i can make it ?
View 2 RepliesI am trying to make a form that you can enter a serial (to validate the product) this is my code :
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Dim T1 As String = TextBox1.Text
Dim T2 As String = TextBox2.Text
Dim T3 As String = TextBox3.Text
[CODE]...
The problem is when i first open my application and i enter my code it goes red, but when i re-enter the code in textbox 1 it works fine, how can i make it work without re-typing?
I am having my app available for 30days free trial, but after that you have to purchase a serial, how can i make my app only recognize a specific type e.g NumberLetterLetterNumberLetterLetterNumberNumber-NumberLetter-Letter:NumberNumberNumberNumber?
OR what would be the easiest way to have serials recognised?
How do i make my program press the ENTER key?
View 1 RepliesSo I wanted to make a program for math where you enter a number into a box. Then you click enter. The program has numbers 1-12 next to a check box. If you click enter it divides your number by the numbers 1-12. Let's say you put 100 in that box. Then you clicked enter. The check box next to ten would be checked, 4, 2, and 5 would all be checked because those numbers evenly go into 100. How can I have the vb check to see if the sum is a whole number?
View 1 RepliesHow to make when the program loads to give 1 textbox to enter password: if they enter wrong password to give them message that the password is not right and to try again..if the password is right to open the corect form.can someone help me with that i have made 1 keygen program and i have insert there the keygens and to make the program to has more than 1 password inside to check
View 1 RepliesI am trying to release my program now and I have a quick (hopefully quick) question concerning serial numbers. I want to be able to store the trial serial number so if the user uninstalls and reinstalls they won't get another evaluation period free of charge. My concern is that some crafty person will simply move the database files in and out of those installs and keep going indefinately. Although I have some protections built into the database itself in case the program runs out, I just want one extra layer of protection. Is there a way to store the serial number in the registry when entered and check for that entry whenever the program is installed using Windows Installer 3.1?
View 2 Replieshow to enter a data that i enter in textbox to a datagridview... for example i enter in the textbox is round and when i click add it will go to database... im using ms access database
View 1 RepliesPublic Class Form1
Private Sub Button1cmdRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1cmdRun.Click
[Code]....
Whenever I run the program and I enter text into the label the program crashes. When I type in a negative number the message box works.
Public Class Form1 Private Sub Button1cmdRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1cmdRun.Click ' Variable declaration & initilization Dim hour As Integer Dim minute As Integer Dim second As Integer ' Validation If IsNumeric(txbTotal.Text) And txbTotal.Text Then >= 0 Then ' Total number of seconds Dim totalSeconds As Integer = CInt(txbTotal.Text) ' Calculation hour = totalSeconds 3600
[code]...
Whenever I run the program and I enter text into the label the program crashes. When I type in a negative number the message box works. A number like -45 worked and a message show appeared, whilst a string like 'bob made the program crashed.
I want my app to need a serial number on the first run before the first form shows.
View 8 RepliesI would like to make an application that will propt the user to enter a serial key in after 10 or 30 days if that is possible also i would allso like to make a keygen tha will work with this program.
View 14 RepliesI am using datagridw view control for input purpose but when the datagridviewcell in edit mode the it is no problem to move current column to next column but when it is not in edit mode then and pressing enter key then it is moving to next row and the same column. but how to take over this problem please give me dn idea.
View 2 RepliesI'm fairly new to Visual Basic (VB), but I've already got running code to access all my serial port. The problem is I want to load multiple serial ports into an array and loop through them in my functions. The program allows me to create ports(), but fails when I try to populate it.
Dim ports As IO.Ports.SerialPorts()
ports(0) = SerialPort1
Where SerialPort1 is an object I draged from the Visual Studio toolbox.
I've got a 9pin serial port plug and I'm wanting to use a button to play music, seems easy enough except from a hardware point of view, say my standard button has a output wire how do I connect that to my serial port? this video says PIN 1 and 4, but why?
View 1 RepliesTrying to make a serial connection from a windows app in vb.net to a com port through pc.also, can i make a separate listener windows app in vb.net that has its own virtual com port (for testing).the function of this connection is to simply pass variable states through the serial port on the pc to a microcontroller, which will interperate the code and perform actions based on the variable states.is there an easy way to implement serial port data communication in vb.net?
View 2 RepliesI use visual basics 2008 to code, and i made my prject its like a program bot, that uses a regular windows form and textboxes etc.NOw i can make it password protected, and give a user the login info, but in order to make a different login info, i have to change it by going in the project and change the code where its a different login and re-save the new work.
Well i want to make it easy. I want to know the codes like where i can make a serial key generator, and it will generate the keys automatically.And whoever uses the login, info im trying to make it where they only can use it for one pc.
way to "reset" a tooltip, so you don't have to leave and re-enter a control to make it pop? I have a form that is pretty much entirely taken up by one control. I want to have its ToolTip text change based on which region of the control is being hovered over (which I can do now). I just have to leave the control and re-enter it to make it pop. I'd like to have the Tooltip pop, then if I move the mouse to a different location (still inside the control's bounds) have it pop-able again in the new spot.
View 5 RepliesIs any easy method to set a textbox poperty which allow only numeric value without occur any events...?like setting to textbox property?
View 11 RepliesMy Application contains a button and two text boxes. 1st textbox is for user input known as tbHost.Text 2nd textbox is for displaying results after button is clicked, this is set to readonly. The button is a start button that will call a new process every time it is clicked. I intend to let user to have a choice to either click on button to display result or press enter key to display result.
[Code]...
How to restrict the textbox input to be a-z, A-Z, 0-9?How to make the enter key event in the textbox?
View 6 RepliesI am a beginner at these sort of things, but could anyone tell me how I can get 'enter' to do this
WebBrowser1.Navigate(TextBox1.Text)
My.Settings.History.Add(TextBox1.Text)
ComboBox1.Items.Add(TextBox1.Text)
i made a serial key a few time and a simple login form but how do i make it so the serial keys or login info only work for one computer and no one else can use unless they get serial key from me.
View 2 RepliesI've been struggling with writing my own Ethernet to serial program and just about to give up since I'm down to the wire on this project. I keep getting intermittent errors and I just can't get around them.
View 3 RepliesI wanted command prompt to change the dir to a specified path[code...
Whne cmd starts, and enters this text, it leaves out the ( and the ) in (x86)
My button, ToolStripButton7_Click, activates a textbox, ToolStripTextBox1, I want the enter key to activate the button and clicking the button to still activate. I tried from you tube, didn't work.
[code]...
Dim number = TextBox1.Text
If number < 1 Or number > 100 Then
MessageBox.Show("You must enter a value between 1 and 100", "Name Entry Error", _
MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Exit Sub
End If
Whenever I enter anything other than a numeric value; the form crashes.
I know the answer to this is out there somewhere, but my Google isn't being much help on this one. I am trying to make my combobox run an event when the enter key is pressed. Here is my code.
Private Sub CmbQuery_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles CmbQuery.KeyPress
If e.KeyChar = Chr(13) Then
SearchEvent()
End If
End Sub
How can I make my text box send the value that was entered when pressing the key "Enter"? I have tried the "textbox_enter" event and it wouldn't work. When I press enter it makes a noise (something like "ding" xD).
View 4 Replies