I want my text box to filled by an alphabet first then the remaing characters can be anything. Also i have drop down which is having arithmatic functions.(< ,> , = ,+ etc) If the user selects < or > then the value entered in the text box should be numeric. and if the user selects "=" then the textbox value should be string.
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is it possible to make first 60 characters in a rich text box a different color than the remaining text?
View 25 RepliesUsing visual basic, I have a string. Want to check that the string contains a single, capital alphabetic character followed by a period. Tried to use Contains as in the following:
someString.Contains("[A-Z].") but this didn't return me what I wanted.
Also need to check for a single number followed by a period.
How can I do this in Visual Basic
how to validate a text box to accept only alphabets and numbers. no special characters. in vb.net i have tried the following code but it doesn't allow numbers but it allows alphabets only
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress
If (Microsoft.VisualBasic.Asc(e.KeyChar) < 65) _
Or (Microsoft.VisualBasic.Asc(e.KeyChar) > 90) _
And (Microsoft.VisualBasic.Asc(e.KeyChar) < 97) _
[code]....
I did this for one of my homework assignments in C#. However I need to do this in Visual Basic. For VB it just needs to be 6 characters and have one numeric digit and at least one alphabetic character.
Private Sub btnVerify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnVerify.Click
public string getPassword()
End Sub
Private Function IsValid() As Boolean
[Code] .....
My homework assignment is to create a project where a user enters a password that must be at least 3 characters long with at least 1 number and 1 alphabet character. After that the password has to be encrypted so that vowels become X, numbers Z, and it reverses. For example, a password of CS2301 would be ZZZZSC. There's supposed to be Loops to extract 1 number/letter at a time and search for them in the string to validate, and I don't know what to do. The form itself has a Text Box to enter a password and a label to display the new one, and a Go button.
This is what my code looks like so far.
Option Strict On
Option Explicit On
Public Class Form1
[CODE]...
I am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
[Code]...
I have a code for the validation for special characters but my problem is i cannot use space bar because of included for the special characters.I want to happen is i cannot input special character except for the space bar. it is possible to do that?by the way this is my code:
Private Sub txtlastname_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtlastname.KeyPress
Select Case Convert.ToInt32(e.KeyChar)[code].....
I'm trying to make a validation control that only allows (a-z, A-Z, and 0-9). Which control to i use in vb.net or do i have to write specific code to validate it?
View 3 RepliesI validate TextBox for numeric and length no more then 7 characters. I'm checking for Not IsNumber and Len. But I want to give a user to save record when TextBox is blank.
View 12 RepliesI am using the MaskedTextBox and I am wanting to check for the following:
1. If the length of the text = 14 characters, enable the reset and start button
2. If the length of the text < 14 characters, enable the reset button, disable the start button
3. If the length of the text = 0 characters, disable both buttons
I am able to get most of it to work but when the length = 0, the start button is disabling like it's supposed to but the reset button is staying enabled. Any ideas? I have been looking at this code for hours and can't figure out why this is.
Here is the code.
vb Private Sub mtbClientPhoneNumber_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles mtbClientPhoneNumber.TextChanged 'Make sure that there is a phone number entered into mtbClientPhoneNumber. ValidateUserInput
[CODE]...
To see the form in action, you can see it here. The reset button isnt disabling when length = 0
I have a bit of problem right here. I am using the timer to connect to my site and extract the info that come from an html tags name, so when I closed the dialog and reopen, it filled the listview items as double.
Here's the
Private Sub form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ListView1.Items.Clear()
[Code].....
I'm making a custom control suited for handling passwords. I have created a control that inherits from a text box and I have implemented a lot of things so far. But what i want to do now is create a system so that when a user types It will display his last character typed for a X amount of time.Is there a way to turn only selected characters into password characters and still be able to get the password text from the Text property ?
View 3 RepliesThe program consists of making 2 text boxes, one labeled Age, and one labeled Name.The Name text box must return the name in all uppercase.If the Age text box isn't filled with a numerical value, you should receive a message saying "need a number" and return your cursor to the age box.2 command buttons "Process" and "Exit"
I tried getting started, but I usually always work better when i have a beginning!
text automatically filled when the process starts CONTINUED
View 3 RepliesIf I make a button that starts command prompt:
Process.Start "cmd.exe"
I want text to be entered as soon as it starts. Like "ipconfig" is typed in by the pc, and hit "enter" automatically.
I'm using Visual Basic 2008 Express Edition, so I have a combobox that gets filled with items from a data base made with Microsoft Acces, the combobox is filled with the values stored in a column from a table in de database so the user can select an "option" from it, I want to add labels that show the values for the corresponding row of that column. I used the Data Source panel to drag and drop the labels corresponding to the values that I want and it works it show the value that I want when I compile the application (at least I think it does, it could be that it's only selecting the first entry) the problem is that when I select a diferent entry on the combobox the labels don't refresh with the new values. How can I do that?
edit
how does Visual Basic Populates de combobox and gets the value of the other Acces DB entrys to change the .text value of the labels? And I mean the actual code that does that.
okay so i was thinking of making a program that can take a text file filled with code so the text file would look like this
Title{Text = blah blah; text = blah blah; Title2{Text = blah blah blah; text = blah blah blah;} }
and have the program display
Title
Text = blah blah
text = blah blah
Title2
[code]...
I want a prompt. Like
Process.Start("cmd.exe")
My.Computer.Keyboard.SendKeys("net users" & vbCrLf)
If you enter "net users" in the command prompt all the local users on the pc appear. I want a textbox in my app, that if a user types in "kyle", and click the button, the first code I gave starts, and after "net users" the text in the textbox is there as well, so it will look like this:
net users Kyle
Im Using a datagridview to display items in an invoice. when the user enters the data in, they use a DGVcombobox to select which particular item they want. what i want to know is. can i change the text of the combobox programatically after the items have been filled
Edit The DGV in question has 2 predefined columns one is a comboboxcell and the other is a text box cell im trying to fill it using
[Code]...
I know that the topic is kind of weird, but I will explain that here. I am reading text from a text box and inserting that into a listbox. I am wanting to read what the user inputs into the text box and add a character between each character they type. Here is what im wanting to do written out[code]...
View 4 RepliesI am new using VB2005 and I need some assistance with the following:I have a created a program that connects to a Access database, the user has to have a user name and password to be able to access the application. So far that is working correctly it validates to make sure that the user and password does exist in the logon table.As you know sometimes people forget their passoword and the administrator has to reset it. I have setup a default password when ask to be reset it which is "Support".If someone logs in using their logon and the temporary passoword (Support) the system is going to promt the user to change it.I would like for the validation of the temporary password not for just anyone to use someone elses logon and just type "Support" and promt them to change it. how can i make sure that the password has been reset.[code]
View 2 Repliesi wanna check if it's a hotmail email something like this : test@hotmail.com which hotmail.com is the domain i use this RegularExpressions to check if it's valid
[code]...
If it is at all possible, I would like to print a page that is layed out with labels filled with text from previousley stored information from the program. now, obviousley, because the text can change in amount, and so the labels need to be able to change in size, and if at all possible allow multiple lines, though if there is no way to do it, then an unchagable text box would serfice.
There is a problem though, the fact that the labels will be changing size means that the position of the labels needs to be variable to the previouse. Example: the box above needs to be bigger, so the box bellow needs to drop down equall to the amount that the above grows.
I have inherited a control and added the Validating and Validated events to it, the validation works when the I set focus on another control but somehow it is not being triggered when a StatusStrip button is clicked hence I need to be able to trigger the validation.
[Code]...
I have this function which evaluates the contents of a textbox (or combobox or maskedtextbox) control and, in conjunction with a KeyPress event, will either allow or disallow the input. It is quite useful for dates or textboxes for which only numeric input is valid. It allows a set number of digits after a single decimal point, if specified in the function call. It also allows the backspace character if the textbox is full.
I would like it to allow me to input what would otherwise be valid text when the textbox is full but one or more characters are highlighted (and would therefore be replaced by the keypress character.
[Code]...
I am newbie in VS 2005 and started learning. Can you please tell me how to Pop up the data from a table when there is a key press in the textbox.
View 11 RepliesHow to make sure that the an focused(selected) textbox performs its validating event before the user clicks on the toolstripbutton?
View 5 RepliesI am using many text boxes in a form. How do i validate them, In certain text boxes I have to use only text and in some I have to use only numbers. Is using ASCII is a right method or is there any easier method to do this. If so please let me know the coding.
View 5 Repliesmake a registration from with proper validation & connectivity with sqlserver 2005.
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