Textbox To Allow Only Alphabet (no Numeric Character)

Apr 23, 2012

I want all my textbox in a form to allow only alphabets,no other characters.I can do this with only one textbox at a time.Is there a way to do it for 10 textbox at a time.[code]

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Password Should Allow Min One Numeric / Min One Alphabet And Min One Sp

Jan 5, 2010

Password should allow min one numeric, min one alphabet and min one special char

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VS 2008 Verify A Textbox If Contains At Least One Numeric Digit And One Alpha Character Using Loop?

Mar 24, 2010

How would you verify a textbox if contains at least one numeric digit and one alpha character using loop?

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Calculate Characters In One Row On Special Defined Numeric Value To Each Character Or Group Of Character?

Aug 25, 2011

How do I write an expression to calculate all characters of each row by my own defined value to each character = all the A and B and C and etc. will be as 2 and all I and J and whatever ... will be 1 so I need an end result of the total.

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User Enters A Password - Must Be At Least 3 Characters Long - At Least 1 Number And 1 Alphabet Character

Mar 28, 2012

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]...

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Check If The User Enter Alphabet In Textbox?

Sep 25, 2010

how to check if the user enter alphabet in textbox the only allow in that textbox is number

i think i will use ascii there like in vb 6.. but i dont know how to done in VB 2008..?

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How To Check The Text In A Textbox, Character By Character

May 9, 2010

My form has a texbox where user enters an ID. IDmust be4 chracters in length andof the form: begins with either "E" or "e" and the next 3 chracters cannot be "all characters".

Example:
E102 - corect
e3ff - correct

[code].....

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TextBox Validation - 16 Numeric Digits Entered Into The Masked Textbox

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:

Private Function ValidateLuhn(ByVal value As String) As Boolean

Dim CheckSum As Integer = 0
Dim DoubleFlag As Boolean = (value.Length Mod 2 = 0)

[CODE]...

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C# - Format Numeric Value From Textbox As Percent

May 11, 2009

I have a numeric value in a Textbox that I'd like to format as a percent. How can I do this in C# or VB.NET?

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C# - Why Textbox Id Not Allowing To Start With Numeric In Asp.net

Sep 7, 2010

I have to give textbox control id like below

<asp:TextBox ID="7_1" runat="server">

It is not allowing me. If I give

<asp:TextBox ID="Test7_1" runat="server">

Then it works fine. Why? Why can not give start with numbers?

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Creating Numeric Textbox (.Net 4.0 - Winforms)

May 12, 2012

I'm trying to create my own numeric textbox that will handle decimal as well as whole number values. The concept is, unlike the regular textbox, this one will accept a value of 'Double' data type and show it with proper formatting e.g. Leading Digits, Digit Grouping etc. When the textbox value is called, it returns the actual 'Double' data type value. The entire thing is done through the 'Text' property; wherein the regular 'Text' property is shadowed and one with 'Double' data type is used.

[Code]...

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Creating Numeric Textbox (.Net 4.0 - Winforms)?

May 12, 2012

I'm trying to create my own numeric textbox that will handle decimal as well as whole number values. The concept is, unlike the regular textbox, this one will accept a value of 'Double' data type and show it with proper formatting e.g. Leading Digits, Digit Grouping etc. When the textbox value is called, it returns the actual 'Double' data type value. The entire thing is done through the 'Text' property; wherein the regular 'Text' property is shadowed and one with 'Double' data type is used.The problem is, in the designer properties window, the Text property always remains readonly and its value says 'Object reference not set to an instance of an object'. What's my mistake?

My code follows:

Code:
Imports System.Windows.Forms
Imports System.ComponentModel
Imports System.Runtime.InteropServices

[code]....

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Filter Textbox Input To Numeric Only?

Jun 2, 2009

How do I suppress all data except numeric?

This is not working on KeyDown():

If e.KeyData < Keys.D0 Or e.KeyData > Keys.D9 Then
e.Handled = True
End If

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Make A Textbox To Enter Only Numeric Value?

Mar 9, 2009

Is any easy method to set a textbox poperty which allow only numeric value without occur any events...?like setting to textbox property?

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Making All Textbox Input Numeric Only

Jun 9, 2011

I have a function in my textbox1 with the got focus event. I have a 40 textbox in my goupbox1.[code]I want that when the textbox1 gotFocus, all my textbox in groupbox1 under the for loop event will declare that only numbers are allowed to be entered in all the textbox. I manage to work with it but only in a single textbox. Here is my code for it.[code]Is there a way or would it be posibble to put this code # 2 into the code # 1? So that I don't have to declare 40 TEXTBOX which is not good.

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Validate Textbox Allows Only Numeric And Decimal?

Aug 31, 2010

it should take either decimal values or integers and max length is 16if it takes decimal value as input then it should contain only 14 digits in decimal place and 2 digits in fraction part eg(1234567.12-valid) but (12345678.123 - invalid) and also(123456.12345- invalid)

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Insert Null Value From A Textbox At Numeric Field?

May 17, 2012

Why when I try to save a null value from textbox at sql server 0 is saved?

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Numeric Textbox Validation In VB 2010 (Windows 7)?

Jul 21, 2011

I simply want to have a user enter a number, e.g., 3.5, into a textbox and then click a button to process it. If nothing or a char or string is entered, I want to inform them to enter the number and clear the box. From a suggestion somewhere it was said to simply use validating. I thought e.handled was correct by that doesn't show up as an option. It works if the input is a number. If not, the messagebox shows and closes on OK but I can't do anything else. Any click (even to 'X' the window) anywhere brings up the messagebox. This is basically what I've tried:

Private Sub txtKidsAnswer_Validating(ByVal
sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles txtOddsAnswer.Validating
If IsNumeric(txtKidsAnswer.Text)

[code]....

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Setting A Textbox To Only Accept Numeric Values?

Dec 9, 2010

I am looking into data validation as I need a way of setting a textbox to only accept numeric values. I have had a search for this and it doesn't seem as straight forward as I had hoped.

I have found a couple of possible methods, although the sites which I found them where very unclear on how they actually work. I feel strongly that I should know how all of my own programs work >_>

I have no actually got this to work with my program yet. Are there better methods than this?

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789$,"

[Code].....

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Validating Textbox For Numeric And Alphanumeric Dynamically

Apr 2, 2009

I have form with ComboBox and TextBox. ComboBox has values A, B. And I would like to validate TextBox. If user select A so TextBox need to check for numeric and amount of numbers can't exceed 10 characters. If will entered not numeric characters error will indicated. If user select B so TextBox will check for string and user can enter any characters. Only if box is empty error will indicated.

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VS 2008 - Checking If A Textbox Is Numeric And 4 Numbers?

Sep 8, 2009

best way to check if a textbox has only 4 numbers and isNumeric, for example i need to enter postcodes.I currently have:

If CDbl(txtPostcode.Text) <> 4 Or Not IsNumeric(txtPostcode) Then
MessageBox.Show("Postcode must be 4 Digits", "Error")

But the message box comes up regardless of whether there is 4 numbers, letters, or anything in the textbox. Its also used in the leave function of the textbox.

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Validation Command - Update Datetime Textbox Instead Of Numeric

Aug 2, 2010

I have the following validation which works fine for numeric textbox i.e., txtprojstart, however I want to update it for datetime textbox instead of numeric... See code below

[Code]...

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VS 2008 - Textbox Validation For Numeric And Length (7 Characters)

Oct 20, 2009

I 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.

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VS 2008 Validates The Numeric And Decimal Input For A Textbox

Jun 3, 2010

I found a function that validates the numberic and decimal input for a textbox and works exactly like I want. But it does not let me limit how many numbers after the decimal. how to do this in the same function?

[Code]...

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.net - Setting Textbox So User Cannot Type In Non Numeric Characters Or Spaces?

Apr 19, 2012

Is there a way to set a textbox in vb such that it does not accept a space or a non-numeric character entered by a user? I am writing a program that has a textbox called "phoneField" in which the user should type in only numbers and if the user trys to type a non-numeric character or space, nothing should be displayed in the textbox. How could that be done?

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Numeric Textbox Class - Number Format Info Not Defined

Jun 22, 2010

This is a Library code I got from Microsoft for format a textbox into a numeric format...but it's doesn't works because error message "numberFormatInfo is not defined".

Public Class NumericTextBox
Inherits TextBox
Private SpaceOK As Boolean = False
' Restricts the entry of characters to digits (including hex),
' the negative sign, the e decimal point, and editing keystrokes (backspace).
[Code] .....

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Detect Alphabetic Or Numeric Key In A Datagridview Control And Send Handled Key To A Textbox?

Feb 6, 2012

I'm working on a Form that contains a datagridview and textbox, I need the datagridview detect any letter of the alphabet or numbers, then select the input and send the key pressed to input.

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Is There A Numeric Text Box Not An Up-down Box A SIMPLE Numeric Box Into Which The User Can Place A Number

Apr 6, 2012

Is there a numeric text box, not an up-down box, a SIMPLE numeric box into which the user can place a number, 5 boxes actually, then on command have the five boxes added and the sum displayed?

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Allow Only Character (a-z) And Number(0-9) Only In Textbox?

Mar 23, 2010

Currently i try this code but[code]...

but i want to allow only a-z character and 0-9 number. not allow any symbol

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Condition About The First Character In The Textbox?

Feb 21, 2011

as the title says , for example i want to say if the first letter in textbox1 is "d" then do a specific command ,so what is the code for this ?

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