Way To Disable Numeric Characters

Nov 11, 2009

Well, it's really my first time to try Visual Basic .NET, then I realized that not all my previous experience with VB6 will work smoothly in VB.NET. I am creating a simple program that will enter a name in the TextBox and will greet them by using the MessageBox class. But I wonder, since the TextBox that I'll be using is for inputting a name, I want to "trap" all numeric keys in my keyboard, I just don't know how to do it. This is fair easy in VB6, using the Text1_KeyPress(KeyAscii As Integer) subroutine.

View 4 Replies


ADVERTISEMENT

Regex - Three Non Numeric Characters?

May 8, 2012

I want to check if a Vb.net string contains at least 3 non white space characters of which at least one non numeric character. i dont know creating the regular expression for it?

[code]...

View 1 Replies

Check If A String Contains Characters Other Than Numeric?

Jul 7, 2009

is there a way to check if a string contains characters other than numeric? ive used isnumeric quite a bit and its pretty usefull, but cant find a way to check for text in a string. Having searched around theres a few ways of doing it slowly that ive found using an array of letters and a loop / instring, but thats much more hassle than checking for numbers, so strikes me there must be a way.

[Code]...

View 1 Replies

Format A Variable To Numeric Characters?

May 20, 2009

how do i format a variable at runtime.

Here is my code
string cool = // some numeric value e.g. 500000
Label2.Text = " Payment of £ " + cool ;

[code].....

View 5 Replies

Highlight Numeric Characters In A Maskedtextbox?

Apr 14, 2011

I am using a masked text box to allow users to enter a serial number. The problem is that this serial number has to be communicated over the phone and people seem to be having trouble differentiating between O and 0 and I and 1.

I thought that a good solution to this might be some way of highlighting which characters in the textbox were numeric characters (as opposed to alphabetic characters). Obviously there is no way to do this without using a richtextbox and then I lose the masking ability. Highlight numeric characters in a maskedtextbox?

View 1 Replies

Mathematical Equation - How To Disable Numeric UpDown

Dec 21, 2009

This is my way the dynamically generate a mathematical equation everytime the button is click. However, I want the combobox or the numericupdown turn disabled when the next question show out. For example, if the question N is generated, the combobox and numericupdown of question generated before N must be disable means that the user only can input to the current question but cant change the answer of the previous question?

Private Sub btnnext_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnnext.Click
If counter < 10 Then
Dim pnl As New Panel
pnl.Height = 40
pnl.BorderStyle = BorderStyle.FixedSingle
[Code] .....

View 3 Replies

Make A Text-box Accept Only Numeric Characters?

Apr 28, 2011

How to make a text-box accept only numeric characters (0-9) ? and give an error Message if it contains any alphabets or symbols.

View 4 Replies

Search A String For Numeric Type Characters?

Aug 17, 2010

how to search a string for numeric type characters and return only the numeric characters to an int field? For example: A field contains a string of "Net 30 days" or "Net 10 days" etc. I want to return only the "30" or "10" or whatever # to a int field.

View 17 Replies

Regular Expression - Don't Allow Alphabetical Characters - Only Numeric For IP Address

Jul 15, 2011

The regex statement below is being used to valid user input for an IP Address.

I want to disallow the ability of a user to type in a domain name (can'tDoThis.com)

How would I change the following statement to NOT allow a user to type in alpha characters.

Dim ipPattern As String = "((2[0-4]d|25[0-5]|[01]?dd?).){3}(2[0-4]d|25[0-5]|[01]?dd?)"

View 2 Replies

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.

View 12 Replies

VS 2008 Function To Validate String - Only Numeric Characters?

May 9, 2009

is there any function to validate if a string has only numerical characters? I can cross character for character and verify if it is a number. But I look for something simpler or if already a function like that exists.

I cannot use IsNumeric or IsDigit because it returns numbers to True with point or comma.

I need only numeric characters (no comma nor points

View 5 Replies

.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?

View 3 Replies

Generate Random Alpha-Numeric String 18 Characters Long

Jan 12, 2009

I nedd some help in generating a random alph-numeric password for a form that I building. The form should suggest a password that 18 characters long. The user would either agree to this password or enter their own password.[code]When I use this I get a two digit number.

View 5 Replies

Use MODI OCR To Process Checkboxes (non Alpha Non Numeric Characters/items)?

Mar 27, 2012

I have a vb.net application successfully processing the text in TIF files, but it is ignoring the checkboxes. Is there anyway to use MODI to process anything within the file that is not text? Such as a mark that a person has made with a pen inside a checkbox? I think I would need to be able to evaluate where the pixels are. This is for a zero budget personal project.

View 1 Replies

Converting Text Containing Alpha-numeric & Special Characters To String Of Only Capital Letters And Numbers

Nov 19, 2011

I have encrypted a string to something like this:

1. Asak2$)kla1015QAXKFskfa332aSJ2(Ska@Skljcmcel3p.lq,aowpqaskla2@)Skx.:Pdm^),dfs;

what i want to is convert this string to something like this

2. JXK2LB AP2WXB S1P0XE ZXPA3H X1LAKW DOXPS3

both 1 & 2 the above strings are fictitious (i made them up to make my point clear)

I am trying to make a licensing system for my VB 2010 express application. (2) above will act as a serial key which can be derived from (1) which is an encrypted form of something unique of the client computer.

I will then confirm the (2) from the client.

View 9 Replies

Asp.net - Disable Characters From Being Entered In Textbox

Apr 18, 2011

I am building a form and i want to prevent certain characters from being typed in a textbox? I want to disable the " and ' characters in some of my textboxes

View 4 Replies

Disable All Special Characters In Textbox

Nov 17, 2011

I've been searching on google for a long time and i can't seems to find a code that suits my need.

Heres my problem:

I want to disable all special characters excepted the dot(.) and the underscores(_).

Heres the code i used:

CODE:

Also, it doesnt allows me to erase my text with backspace if i ever do a mistake.

View 7 Replies

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.

View 3 Replies

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?

View 8 Replies

Disable A Timer - Will Finish The Process And Then Disable Or Will It Immediately Disable Without Completing Process?

Dec 22, 2011

I am confused what will happen, when I disable a timer. Will it finish the process and then disable or will it immediately disable without completing process? for example

[Code]....

I want to run getMessage from somewhere else, so I need to disable timer during that time to be asured not to override anything and also before timer disable it should complete that function code.

View 3 Replies

Numeric And Non Numeric Data?

Jan 22, 2010

I am reading a data file and storing them in an array of string.Data is random, could be like "1","2","133,18" but sometimes there can be missing values like "?".Once I load the data in the array, I want to check if at least a majority (like 60% of them) are numeric values.If yes, then I wanna track down the higher and lowest value in the array, and output a range of 5.Loop through the array

If 60% of them are numbers (integers or decimals) then find highest value, find lowest value end if produce range

If for example lowest = 1 and highest = 100, range of 5 means 0,20,40,60,80,100 (so 5 ranges are 0-20, 20-40, 40-60, 60-80, 80-100).Also if the ranges turn to have decimals due to weird numbers, I would like to round them up.My problem is, in order to find highest and lowest when there are non numeric values in the array like "?", how should I handle those? I was thinking of something like Double.NaN but I would have to have an array of doubles.

View 3 Replies

Regex - .NET: Manipulating TextBox Input: Dash Every 5 Characters And Removing Special Characters?

Dec 21, 2011

Essentially I am trying to replicate the Windows 7 (In-Windows) activation key TextBox form. The Form where it will auto capitalize letters, remove or deny all non alphanumeric characters except dashes every 5 characters that will be auto-input.I assume this can be done with a fairly complicated replacement Regular Expression but I cannot seem to create one to fit the needs.

This is an Example of what I have right now, but it creates an infinite loop as it removes all characters including dashes, than adds a dash, which changes the text and removes the dash again.

[Code]...

View 4 Replies

Remove All Special Characters(except - And /) From A String Including All Cr,lf,crlf, Other Illegal Characters?

Sep 13, 2010

i have been trying to remove special characters. i am not able to remove many crlf in middile of the string.

View 3 Replies

Disable Right Click And To Disable The Start Button And Task Bar?

May 16, 2009

to disable right click and to disable the start button and task bar?

View 4 Replies

Inputting A String Of Keyboard Characters And Outputting The Characters In Reverse?

Aug 3, 2009

I need to create a console program that allows you to enter a string, of which is then outputted in reverse.

Sample:
Input: Diewas
Output: saweiD

Apparently I need to find out about strings and will also need to use a loop.

View 9 Replies

Error When Getting A Substring Of X Characters Out Of A Parent String Of Less Than X Characters?

Feb 23, 2011

Not sure if too many people know this, but the following line will cause an error:

GroupName.Substring(0, 3) = "jt_"

....if the length of GroupName is less than 3 characters. I always thought it would simply return whatever characters in GroupName, but no, it errors. I must be thinking of the old VB6 days.So, I now have to change the code to:

If (GroupName.Length > 2) Then
If (GroupName.Substring(0, 3) = "jt_") Then

Note that the two comparisons need to be on separate lines. If they are on the same line, such as:

If (GroupName.Length > 2) and (GroupName.Substring(0, 3) = "jt_") Then then the code will still fail as the length command is executed at the same time as the substring command- which will cause the error when the GroupName length is less than 3.Just thought that those of us not aware of this should be!

dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('9844f9bfb55449e6a786fa62aaadfa20')
dp.SyntaxHighlighter.HighlightAll('f6d554fd98464bdba9159b319e51b381')
dp.SyntaxHighlighter.HighlightAll('93bf4ca63ad8447abdf084d8a9991e15')

View 8 Replies

Replacing Characters In Textbox (including Special Characters)

Aug 5, 2011

I have two textboxes. I type in one of them and the text gets copied in real time into another textbox. There is one catch. I need to replace specific character with something else.

If I enter a quote " in textbox1, it has to be replaced with " in textbox2.

I started with something like the below code, but obviously this does not work (tried different stuff - this is for demonstration only). In the example below 'a' represents " , and 'b' represents "

Private Sub TextBox1_KeyUp(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.KeyUp
TextBox2.Text = TextBox1.Text

[Code]....

View 2 Replies

Shape Of Really Large Characters Such As Numbers And Alphabetic Characters

May 9, 2011

With the shape of really large characters such as numbers and alphabetic characters + others, is there a way to get that shape as a REGION please?Imagine a really fat snake forming the letter S or two rectangles placed together to form a large letter L or a T like the shapes in TETRIS.

1) Does anyone know of anything in VB.Net that can translate such shapes into a System. Drawing.Region or know of a project elsewhere that achieves this please?

2) While I'm on the subject, how would you SCALE UP / DOWN a System.Drawing.Region please? How would you work out the Transform Matrix required please?

View 1 Replies

VB Mixing Characters When Change Position Of Two Characters In Word

Aug 27, 2011

I'm making an application that will change position of two characters in Word.

[Code]...

Program works good, it is mixing characters good, but it doesn't write text to the file. It will write text in console, but not in file. Note: Program is working only with words that are divisible by 2, but it's not a problem. Also, it does not return any error message.

View 1 Replies

VS 2010 Turn Only Selected Characters Into Password Characters

Feb 20, 2011

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 4 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved