I have a textbox that is for National Insurance Number, so I want the first 6 characters to be letters and the last to be a number. I know I need to use the Is Numeric function but I cannot get it to work.
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can anyone help me in restricting characters or numbers in a textbox?
View 5 RepliesI want to restrict the number of characters you can put into a textbox.
View 7 Repliesi wanted to restrict my text box to have only 10 characters.I have used the following code
[Code]...
I want to create a textbox user control which accept only numbers.
View 8 RepliesEssentially 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]...
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]....
I wanna type 140 characters in asp.net textbox with multiline when i type in textbox then the characters will be decreaded means if i type two characters in textbox then in label the available characters will be shown is 138..using vb.net
View 1 RepliesIm using a datagrid for user to enter input. However,im restricting the grids to some value.My grid is actually not bounded to any database. so,here is my requirement: whn the form is getting displayed,all grids are getting displayed.,which dont want.,only row2 shld get displayed to user after he'l finish entering values in row1.. im using vb.net as front end and access as backend..
View 8 RepliesI've been tasked with creating a kiosk style system to browse a college library catalogue. It's all gone really well (unusually) and I've just shown my first version to one of the library bods. They're very happy with it but want to know if I can sort it so that folks can't navigate away from the library pages.I know how to prevent explorer opening a new page but not sure how to limit the browser control to one domain.
View 2 Repliesi want to restrict -ve values entering into access database table.im using vb.net as front end...
View 5 Repliesi am having a problem with either my algorithm for restricting an angle between lines. I have a diagram of my problem at the following linK: [URL] In the above diagram, i know the positions of the Points marked on the diagram. The Black lines represent where the lines are currently, i want to move the lines so that they are at right angles to one-an-other (i.e: they are perpendicular) if they are moved to not be so. This is represented by the gray lines.
View 1 RepliesI have an interface IDigitalState defined as
Public Interface IDigitalState
ReadOnly Property Code As Integer
ReadOnly Property Name As String
End Interface
[Code]....
What I wanted to do was declare a variable as a nullable type of IDigitalState. I understand why I cant do this because the interface may be implemented by a class which is not allowed to be nullable. Is there a way to define the interface so that it can only be implemented by a structure.
there any way that i can always have a / as the first character in the textbox?
View 14 RepliesUsing VB2008.We have copied a file into a textbox for editing.It is not allowed to delete certain characters, for example the $.
View 3 RepliesWe have copied a file into a textbox for editing.It is not allowed to delete certain characters, for example the $.
View 1 RepliesI am trying to show the square root of the number entered in the textbox. when the user presses Q (Uppercase), the square Root should be shown (in the textbox). I did manage to get the sqaure root, but the problem is that when I press Q the Letter Q is also typed in. For example, if I enter 25 in the textbox and press Q then I get Q5 as the result. Is there any work around to this problem ? Below is the code that I have used.
Private Sub Textbox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Chr(81) Then '81 for Letter Q
Dim root As Double = Math.Sqrt(Val(TextBox1.Text))
[code]....
I wanted to set a maximum limit of characters of textbox in the properties but i can't find where it is located unlike in vb 6.0 you can set the characters in maxlength...
View 6 RepliesI have a a multiline textbox, I want to take each and every character that the user enters and on a button press it replaces them with a set of characters, like:
i with x75d
or:
f with g8r
but the only way i have figured out how to do something like this is using a character in between each character and the split method, like:
Dim input() As String
Dim txt as String
Private Sub Encode_Click(ByVal sender As System.Object, ByVal e As
[Code]....
i would like to limit a textbox input to 20 characters and only one line to input the characters.. i really have no idea where to start. i did see some forum threads, except they're for different options other than the option i need.. trujade.so much work to do and so many choices to choose from...
View 5 RepliesI want to create a property for a custom textbox control that accepts only positive integers of a predefined range, say 1 to 20, with 8 as default. I can declare the property as Byte or UInt32, but that would still accept 0 and the upper limit is bound by the range of the type and there would be no default setting. When I use an Enumeration I'd have to create a list of all possible inputs, but when I want an upper limit of 1000
View 6 RepliesI am creating a converter program (lengths, weights and such), basically just for the learning process because I still find myself very new to this.Well it's like this, I have a textbox where the user is supposed to write the value of the unit he/she wants to convert. As we all know there is a possibility to write in many weird strings which the program later on result in a big error. I recently managed to get rid of dots, because the program couldn't convert if there were a dot among the numbers "." (commas "," works great!). And now there are other types of errors I need to get fixed. I will make a short numeric list.
1. I wonder if it's possible to make dots "." to mean the same thing as a comma ",".
2. I also wonder if i could disable letters a-z or like -#@%&]?! and so on, i just want the basic 0-9 with a coma or dot.
3. I tried to make a Msgbox that tells the user when he/she has done an overflow, a number to big for the program to handle, for example [Observe the code is also trying to prevent the user from writing a minus "-":
(textbox1_textchanged)
If TextBox1.Text.Contains("-") Then
TextBox1.Text = TextBox1.Text.Replace("-", "")
[code]....
The minus thingy works great, but the 9999999... code, it always creates problems so I have commented it out for now until I know how to handle it.
4. Even though I got rid of the dot "." problem, the user is still able to write more then one comma, and I also want to get rid of that. The code I use right now for the "disable dot problem" is:
(textbox1_keypress)
If e.KeyChar = "," Then
If TextBox1.Text.IndexOf(",") > -1 Then
[code]....
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 RepliesI'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.
How can I make a text box only accept certain characters?
View 2 RepliesI want to limit the Textbox to a range of characters in VB. For example, I want the user to enter strings from 5-7 characters. I know how to limit the Textbox to a certain number of characters by MaxLength but that will give him the option of writing just 3 or 4 characters which I don't want to allow that from happening.
View 4 Repliesi need to set it it dynamicaliy.i make password Box to as normal text-i mean- user could see the text what he entered.???
its for-> i need to use same control for " password sesion" and also the "item count entering" session ..??
I have a program that users log their activities during the day in a textbox. I have the following code to print the textbox, but it does not print the tab characters that are in the textbox.
Private Sub PrintDocument1_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
Try
[code].....
Anyways. I am working on a program/game.
Okay so. I have a textbox. and a button. I made the button disabled.
What I want to happen. I want the user to enter exactly 4 characters. Once this has been done. I want the button to becomed enabled.
This is what I want.
If
textbox1.text = (exactly 4 characters) then
Button1.enabled = true
I which to use the text of a textbox to fill another text box. I only want to use the first 5characters of the text. I which not to change the original textbox text.
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