IDE :: Make Validation In Txtbox Only Allow Letter And Number?

Jul 31, 2010

How to make validation Only Allow letters and Numbers to Input, without any special character in Textbox

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VS 2005 Cancel Validation Of Txtbox If Form Close Btn(x) Is Pressed

Apr 5, 2010

Is there an way to supress the validating event of textbox when the forms close button(X) is pressed. In the textbox validating event , if the condition fails then i am displaying an messagebox. Now suppose if the textbox has the focus and user directly presses the forms X button , then the messagebox is displayed

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Text Validation : Make Sure User Has Entered A Number(int/float/double Etc.) Not A String?

Apr 5, 2009

When I read a value from text box I want to make sure user has entered a number(int/float/double etc.) not a string. Is there any function to check it? otherwise how do i validate it.

Language : VB.NET
Version : Visual Studio 2005

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VS 2008 - IndexOf - User Enters A Letter Into A Text Box, And The Output Must Make The Letter Uppercase

Jun 28, 2010

I am a vb newbie having some trouble with an assignment. A user enters a letter into a text box, and the output must make the letter uppercase and tell what position the letter is at in the sentence "The quick brown fox jumps over a lazy dog."

Here is my

Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click

[CODE]...............

This is what comes out: "A first occurs in position -1". Everything comes out except the position is always displayed as -1.

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Make A Cmd App Like With Just A Txtbox?

Oct 27, 2009

im trying to make a cmd app like with just a txtbox.

how would i make my app wright what the user entered and print the output from cmd on txtbox with out cmd showing up

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Phone Number Or Landline Number Validation In Textbox Code?

Feb 11, 2012

validation in vb.netemail_id validation,name,mobile number,Telephone number,zip_code,address i want to all code the textbox

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Compare Txtbox 1 To Txtbox 2 While Typing?

Jun 21, 2010

Working on a personal project to help with my sons spelling.Textbox 1 will hold the correctly spelled word. Textbox 2 will be typed BUT I want the background of textbox2 to change green if he is on track but turn red when he messes up on a letter. Basically I need the two boxes to be validated each time he presses a key. I can do the box to box when complete but the trick I am having is how to I have them check as he is typing?

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VB Number And Decimal Number Validation Expression?

Sep 19, 2009

To allow a textbox to contain "15" or 15.5" as numbers nothing else...I figured that ^\d+$ works for numbers but can't get decimals to work also?

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Assign Letter To A Number?

Dec 17, 2009

Public col, nmb, x, y, z As Variant
Public hw(17) As Variant
Public buses(17, 200), sht, dt, nme, per, rnk As String

[code]....

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Concatenate And Number And A Letter?

Nov 28, 2010

Ok I am a newbie and I need to concatenate a number and an integer. Can somebody give me a idea on how to accomplish the following/I need to take the number (which is an integer from a simple math function) and the letter A and create something like "A10" or "A45" or "A123". Can someone please give me a tip on how to accomplish this?The program creates the integer by using the value of a drop down box and a reference number of 9. The maximum value will be 109 and the minimum is 10. It needs to be combined with the letter A, which does not change.

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Converting Letter 'A' To Number 0 Vb?

Feb 6, 2012

I have a string "abc defg h"I wanted to translate each letter into the corresponding number for example 'A' as '00', 'B' as '01'eg'hello' --> '06 04 10 10 14'ps would a dictionary at all with this?

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Replace A Number With A Letter?

Oct 21, 2009

I've been looking at this for a while and I'm stumped. I'm under the impression that if I use strOpass = strOpass.Replace(":d", "Z") that I should be seeing any numbers that a user inputs the code line there will return a Z. It's not working and I don't understandI've also tried "[0 - 9]" and :z, but the program is still returning the original input.B is not giving me a hard time over that line ( no errors or warnings. ) The other statements work just fine and return a X just like they should. Here is the entire block of code:

Private Sub btnDisplay_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDisplay.Click
Dim strOpass As String

[code]......

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Specify A Number Or Letter With Their Ascii Value?

Aug 19, 2011

How do I use key_down event in my vb.net?It is so sucking I have seen so many codes on google but none of them working I dont understand where its going wrong

[Code]...

2) can anyone post a sample of these "a textbox that allows only numbers from user using key_down"

3) I see people using e.keychar but in my vb.net(2008) I dont have that keyword I guess e.keycode must be used is that right? or e.keyvalue?

4) I see e.keycode = keys.A but I need to accept 'a' not "A" How do I specify a number or letter with their ascii value ?

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Make A Translator - Translateevery Single Letter And Make It 1 Word

Sep 7, 2009

I want to make a translator like this: [URL]...I have already made two textboxes and a button. If I type in textbox 1 abc then textbox 2 must say nop. I already know the If textbox1.text = "abc" then textbox2.text = nop. I don't want that i want to translate the a to a n and the b to a o and the c to p. So i want to translate every single letter and make it 1 word. Its like a secret code. My language looks like that a=nb=oc=pd=qe=rf=sg=th=ui=vj=wk=xl=ym=z n=ao=bp=cq=dr=es=ft=gu=hv=iw=jx=ky=l z=m

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Get Excel Cell By Row NUMBER And Column Letter?

Jul 19, 2011

In VB.NET, using Interop.Excel, I need to access a cell based on a row number and column letter. I tried my luck with...

pages.title = DirectCast(wksht.Cells(rows, "D"), Excel.Range).Value

Since the parameters took type object, I figured maybe this would work, but got no luck. I also thought of enumerating each letter to a number, but the columns in the spreadsheet aren't as normal. Meaning, they're not

A B C D E F G

They're actually...

A B C D E T AZ

I don't know if this makes a difference in the numbering of the columns. The question should be obvious, but just to reiterate, how can I get a cell based on a row number and column letter?

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Count The Number Of Times Letter A - E Is In The Input String?

Mar 16, 2010

input = "my mother is a great lady" output = A -3, B - 0, C - 0, D - 1, E - 2

I wanted to count the number of times letter A - E is in the input string.

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SQL Match On Letter And Number Arrangement Without Using Regular Expressions

Feb 21, 2011

Is it possible to write an SQL statement for MySQL which finds all rows which match a specific arrangement of letters/numbers without using REGEXP? i.e. SELECT myCol FROM myTable WHERE myCol='{number}{number}{letter}'Should return 12X and 34Y but not 123X or 34YY..SQL match on letter and number arrangement). The difference is that I have discovered that I cannot use regular expressions with the ADO.Net driver I am using. Whatsmore, I cannot update it since I am using Visual Studio 2003 which is not compatible with later versions.]

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Control Number Validation In VB?

Jun 5, 2011

My company uses control numbers to keep track of all of our inventory for every product that is entered into our warehouse.(ex.G123456789, T987654321) 1st Alphabet followed by 9 digits of numbers.Most of the time, these control numbers are scanned into the system by using a barcode scanner but some times these control number are entered into the system manually by hand.People make mistakes and sometimes enter in different control number.i want to be able to code my vb so that when the control number does not meet the critarion then program displays an error message.So i want to check for the first character which needs to be an alphabet and characters 2-10 to be a number.

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VS 2008 Enter Only 7 Numbers And A Letter - Passport Number Into The Textbox

Oct 26, 2010

I have a customer form and want the customer to enter a passport number into the textbox and want to limit them to enter only 7 numbers and a letter.

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.net - Greek VAT Validation Number Code?

Dec 7, 2010

Is there anybody which can assist me with a code in VB.NET visual studio 2010 for validating Greek TAX Registration number (VAT).

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Checking Validation Of Number Using Module?

Jan 3, 2010

Actually i m trying to check the number validation in textbox using module. I write a code using function in module but i m not getting that hoe should i pass the value back to form. i m using isnumeric function.

how to check only number check in textbox using module

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Telephone Number Input Validation

Nov 25, 2009

The system we have in place at work for call centre agents to input telephone numbers doesn't validate their input, so, in a lot of cases, we have junk data being entered (0000000000 as a phone number generally). I've been taked with fixing this, but I'm not sure how to stop the agents entering junk like this.

[Code]...

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Create An Array And Textbox & Button - Consisting Of One Thousand Number And Letter

Apr 16, 2011

I want to ask about the VB. NET Array

I want to create an array and Textbox & Button Array consisting of one thousand number and Letter( one thousand )

From 0 - 9
and
From A - Z

When i press on Button, I want to see one thousand random number Every time the numbers must changed! Except the location 400 and 410 for example i want to see in the location 400 " 7 " for example and in the location 410 "Y" for example

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Display The Number Of Times A Specific Letter Occurs In A Word O Phrase

Dec 2, 2007

I'm learning to Program in school and i use vb.net 2003. Im trying to create a letter count application that displays the number of times a specific letter occurs in a word o phrase. (uppercase lowercase letters should not be counted) I started out by doing the folllowing:

[Code]...

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Forms :: Textbox Validation - Input Number Between 1 To 12

Mar 9, 2009

I am new to visual basic. Below is my
Private Sub todayMonth_Validating(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles todayMonth.Validating
Dim tb As TextBox = DirectCast(sender, TextBox)
If Convert.ToInt32(tb.Text) >= 1 And Convert.ToInt32(tb.Text) <= 12 Then
tb.Tag = True
[Code] .....

Actually, I wanted to validate the todayMonth textbox just to input number between 1 to 12. The problem comes out when I do this procedure : Lets say I input an interger 11 and it passes the validation and proceed to another textbox. Then I click back to the todayMonth textbox, it shows this error :
"Conversion from string "" to type 'Integer' is not valid."
I don't know why my value in the textbox is "null" or empty . I still saw the value 11 on the textbox.

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Number Validation In Required Field Validator?

Sep 8, 2009

Is it possible to put Number validation in required field validator in asp.net text box?

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VS 2005 Text Validation - Check If The Number Entered Is Valid Or Invalid

Nov 18, 2009

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]...

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VS 2005 Make First Letter Into Uppercase

Jul 15, 2009

how to Make Uppercase only the first letter and the rest are small.i found a lot of code here but i don't have clear to want i need [code]it work but the cursor is always move before the letter, result are user has difficulties when typing because it always move to before the first

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Keypress - How To Make Separate Line For Each Letter

Nov 26, 2011

I have a textbox and I only want people to be able to type in the word "ALL" and the numbers 1-6. How do I go about that? I got the number part but do I have to make a separate line for each letter in the alphabet that isn't "A" or "L"?

Private Sub monthTextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles monthTextBox.KeyPress
'If (e.KeyChar <= "1" OrElse e.KeyChar <= "6") Then _
'AndAlso e.KeyChar = "ALL" Then
'e.Handled = True
[Code] .....

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Make A 'translator' That Will Simply Just Swap Each Letter?

Nov 15, 2010

I'm trying to make a 'translator' that will simply just swap each letter with each other, (a = b, b = a, c = d, d = c ect.), when the user types something into a textbox. How would I go about making it?

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