The client can enter only four digits in the textbox wich represent the PIN (the text box is not allowed to enter more or less than four digits) . After the client entered four digits the textbox will be read only
My problem :When I put one digite then the text box becomes read-only, i want to enterd only 4 digite ..
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar Like "[0_9]" Or Asc(e.KeyChar) Like 8 Then
I have a textbox called TxtProNo - this should be ONLY 10 digits maximum. After 10 digits have been typed, the user can't enter any more digits, how can I achieve this...
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:
Private Function ValidateLuhn(ByVal value As String) As Boolean
Dim CheckSum As Integer = 0 Dim DoubleFlag As Boolean = (value.Length Mod 2 = 0)
how 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
I found this code for making my textbox only accept numbers.
Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress Dim allowedChars As String = "0123456789"
[Code]....
But... the user can't delete the numbers using the backspace button. How do I do then?
Given a texbox, how can I completely ignore non-digit characters? So if I press "A" or "Z", those characters would never appear in the textbox. I'd like to run a bit of code if the user tries to input digits and if he tries to input non-digits too..
Given a texbox, how can I completely ignore non-digit characters? So if I press "A" or "Z", those characters would never appear in the textbox. I'd like to run a bit of code if the user tries to input digits and if he tries to input non-digits too
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789$," If allowedChars.IndexOf(e.KeyChar) = -1 Then ' Invalid Character e.Handled = True
[code]....
this code accept only digits and its working like a charm but if i typed a wrong number its not allowing me to use the delete or the backspace on the keyboard?
i'm looking for a VB code to format integer into 5 digits and then after that auto increments like (00001 , 00002, 00003) And they are used in a text box field.
Scenario Example : When the user clicks on Add New Record. The empty id text box field will automatically insert a number 00001 on the textbox and if there user wants to add another record the number goes 00002 and so on.
Im trying to get my code to check that my textbox has 16 digits in it so that it can then validate the number entered. Here is the doe i have so far: [code]
This code bellow to find total of digits from textboxs to listbox.This code don't care about how many textboxs on the form.I take this code from Cazypennie..Great code.My question is..I want to change that code from many textboxs to only one textbox MultiLine having 30 Lines of digits to count and appear to listbox.
Option Strict Off Public Class Form1 Dim BoxValueCollection As New Collection[code].......
It try to insert 10 digits number to database sql server through textbox it give me this error.Here is the code which i use for validation the textbox
Private Sub contacttxt_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles contacttxt.KeyPress If (e.KeyChar < Chr(48) Or e.KeyChar > Chr(57)) And e.KeyChar <> Chr(8) Then
I need to click a button but after doing so a label will show the first digit in a text box and another label will show the second digit. I know the button control but I don't get how to get the label to say what the first and second digit is.
I'm trying to match a string to see if it matches exactly this:####-####, it has to be 4 digits followed by a hyphen followed by 4 more digits. Right now I have this pattern: "d{4}-d{4}" but it's allowing 5 digits in either (or both) instead of strictly 4 per group. Here's an example of what it should allow:
1999-2000 2003-2007 2009-2010
and here's what my pattern is allowing but should not be allowing:
I have 10 labels with 10 numbers and i want theses numbers to compare with other 10 labels with different numbers and when they found that second pair of labels are not equal with the first to show me in a new label where is the fault and in another new label the sum of the mistakes
I am trying to find the code that would be necessary in order to add a dash on a new line when pressing the ENTER key.[code]so it puts the dash but the cursor moves below the dash.Any ideas what I need to keep the cursor beside the dash?
when i enter information into the overall textbox say like 4.0 the calcuation should pick it up as 10.0 but its just taking the the 4.0 instead of the 10.0 in the select case. How do i get it to take 10.0 instead of 4.0. here is my code,
I have two textboxes. Once the user enters value inthat I want to display it in the datagrid (not saveing in the database)So when he enters say 15-10 values (keep adding in the grid) then he hits save to save it to the database.
So how can I just take the value in from the textboxes and add it to the datagrid?
I am working on my application that I have two forms to work with, as the one are for search and replace text and the other form are the normal form. However, I want to know how I can use the sendkeys on the form1 when I highlight for each line of the text in the textbox on form1 to press the enter key and start firing for each line of the highlighted text?And how I can do the sendkeys to the form1 when I open the search and replace dialog to input the search text in the textbox then click the button to sendkeys on my form1 and firing for each line of the highlighted text? [code]It did not send the keys on my form1 and start firing. It have just input the text as "13". I want to do the sendkeys as enter on my form1.
The folowing code to read text from a text based file into a textbox however the enter key is also displayed (as two small boxes) I need my code to subtract the absolute last character in the textbox how can this be done?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim ReadALPHA As System.IO.StreamReader
