VS 2010 Restrict Input In Text Box?
Apr 17, 2011
im writing a program for counting the cash in a till.i have most of it worked out through research on this site and others. im trying to code a text box that allows the user to enter any amount between 0 and 9999.99. I have everything working except restricting user from entering more than 2 digits after the decimal. I could leave it as is and the currency format that im using will automatically round the input to 2 decimal places but this creates a problem if the user accidentally enters an extra digit and the program rounds up. for example if the user intends to enter "23.34" but accidentally enters "23.345" the program will round up to "$23.35" which will cause a problem in the end calculations.here is the code. if someone could explain what i need and where that would be great.
Private Sub TextBox1_KeyDown(ByVal sender As Object, _
ByVal e As System.Windows.Forms.KeyEventArgs) _
Handles TextBox1.KeyDown
[code]....
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Aug 18, 2010
I am in a need of a Regular Expression to restrict input to only certain characters in a text box. The text box can only allow 0 or 1 "+" sign at the beginning and at no other position. The text box can only allow 0 or 1 ":" sign not before the "+" sign. The text box can allow any number of 0-9 digits.
[Code]...
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Apr 3, 2010
i am trying to restrict the input for a RichTextBox to certain values. I am trying to only allow Letters, the Backspace button and the Space button. The letters and backspace button work as expected but the Space button does not, i found the characters of the keyboard from this page but space is not working and it does not accept it,
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Feb 16, 2006
I have some textboxes that I only want numbers in and only want a range of numbers to be valid. Also I do not want to use NUDs. I already have the textboxes connected to functons and subs so I do not really want to change them.How would I do this?
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Oct 6, 2009
I am wanting to restrict the input on an InputBox and I am confused about how to do that. I know what to do on a text box to restrict input to numbers, the ".", and the backspace key, but I cannot figure out how to tie the input restrictions to the pop up InputBox. Do InputBox 's have an object name attached to them? Or are they just called InputBox.whatever?
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Sep 8, 2009
i want to restrict input of a textbox to only numbers but am doing it on asp.net, so i cant check for each character that is being inputed cause it will cost me a post back and thus lots of time?
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Aug 7, 2010
[code].....
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Jul 22, 2010
I am using this:
Dim oFile As System.IO.File
Dim oWrite As System.IO.StreamWriter
oWrite = oFile.CreateText("e: est.txt")
oWrite.WriteLine("TEST")
oWrite.Close()
Which works, but I would like to have it so instead of creating test.txt it names the document using multiple input text instance.
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Apr 8, 2009
If I have a control, in this case a button, can I restrict the area it considers valid for text?
In the attached image, the left and right arrows are custom drawn in the paint even, I also have a scroll timer that scrolls the text if the length exceeds the buttons width as measured by Graphics.MeasureString.
I want to restrict the text from red line to red line so when the text scrolls it does not interfere with the arrow indicators, can the text area be overridden to some custom region?
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Apr 5, 2009
I have alot of text boxes across alot of forms in ASP.NET programming in code behind pages in VB. I want to ensurethe user does not enter such characters as ' " ( ) or any which could mess up the sql syntax the script makes, and with some will validate what they entered is of numerical value.
Now I know you can stop the text box allowing such characters in a Windows application, but cannot find for the life of me a way of doing such in a web application - and its not really viable to perform a sub-string check at the click of a button for every box
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Oct 11, 2011
When the user open the form a textbox is displayed that picks up data from a table. If they click Change button a combo box is displayed that allows them to change what was originally in the textbox. The combobox is updated with whatever was in the textbox as shown below.This all works fine but the user can add something in the combo box that is not in the list which is bad.
cmbAddBook.Visible = True
cmbAddBook.Text = txtAddBook.Text
txtAddBook.Visible = False
[code]....
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Dec 8, 2011
I have a simple query that fills a datatable from an Access DB. There are about 1.7 million records returned, so I would expect it to take a little time. At first, the query was a very simple one, and it took a couple seconds to fill the datatable. However, I really wanted the ability to restrict the rows by a certain date field, which meant a single INNER JOIN to a different table. Having written this, I verified that it was correct by copying the SQL string into the query builder in Access. The query, in Access, took a couple seconds to complete. That was comparable to the time I was seeing before I added in the join.
However, in VB, the query isn't completing at all. After 60 seconds, I get a message about a ContextSwitchDeadlock stating that it hadn't been able to transition or pump messages in a long time. Frankly, since the exact code works fine when I remove the JOIN, this seems like it is either a deadlock internal to the Jet engine, or the error message is an artifact of a very long running query. My question is why a query (albeit a large one) is hanging in the VB program when the exact SQL runs in a couple seconds in the Access query designer, and when I remove the JOIN, the query runs in a couple seconds in VB?
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Jan 28, 2011
1) I'm dragging a file (.txt) into a rtb which works fine, but how do I get the filename? (messagebox whatever)
2) How do I restrict files to drop? (like a .exe)
vb.net
If e.Data.GetDataPresent(DataFormats.FileDrop) Then
Dim Files() As String
Files = e.Data.GetData(DataFormats.FileDrop)
Dim sReader As New StreamReader(Files(0))
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Sep 3, 2010
I open a word document in webbrower, but some File Download dialog box opens up with three buttons Open, Save and Cancel. I always wants to open the document directly instead to click on open button.
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Feb 19, 2012
If my Category and Forum selection is incorrect I am sorry and feel free to move it. I'd like to have the users input in the message box that will show. For example: There is a textbox and the user puts in their name as Bob. Then the message box would be: What my main goal is, is being able to include the users input they type inside the textbox inside the message box.
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Jan 15, 2011
I need some help with the input validation of my application. Attached is the code that I have written as well as a screenshot of the front end. I specifically need input validation to verify that the user selected input for cbLengthOfStay is a number between 1-10 as well as input validation to verify the user input for txtMedication, txtSurgicalCharges, txtLabFees and txtRehabilitation is a positive numerical number. Please feel free to critique my attached code. [Code]
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Feb 19, 2011
I'm making a custom control that needs to look like a Text Box but I can't Inherit Directly from text box since I need to add, Change and Override so many things that it would be more practical to just inherit Control and start new.
But now my question is: Is there an easy way to create the basic functionality of a Text Box like drawing the Text Box and handling input ?
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Mar 23, 2010
What I want, is Some text fields to input text, and one image path, then I want to print that, in a format like..
Centered Text
Centered Text
-------------------------------------
[=====IMG=====] Text text text text
[code]....
But from everything I've read though, I'm completely lost.
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Oct 25, 2009
I am trying to bind a textbox to a binding source (using the IDE DataBindings Editor) and it works fine except for one thing: if I delete the text I get the subject error. What I want to happen is the datarecord field be updated to a dbnull value -- how do I get that to happen?
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Oct 12, 2009
I have a form that has a web browser to display the word doc. I want to be able to edit this word doc with a text box. How can this be done. I searched for this online and came up with this: [URL] But I'm not really sure what to do with it.I have some code: Public
[Code]...
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Dec 15, 2009
I have a form that has a web browser to display the word doc. I want to be able to edit this word doc with a text box. How can this be done.[URL]
Public
Class Form1
Dim oDocument As Object
[code]....
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May 4, 2011
Basically, I want to have a text box that will display text associated with the text input.
For Example:
input : 512
output : TEXAS
or
input : 659
output : ALABAMA
I have heard that it is possible to do this, and I would like to find out a way to. Even if I need a separate text file with the arrays, I would like to get this to work.
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Sep 22, 2011
I am trying to write code that will open a file with the input from a combobox from the user. My code is below:
[Code]...
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Jul 29, 2008
What's the code for input and output text?Ex.I have two textboxes. Textbox1 and Textbox2 I type in "1 2 3" in Textbox1 I press a button and it converts the numbers to it'scorresponding letter, like A B C. I need a code so that I can do that
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Mar 28, 2009
i was just wondering if there was a way that i could compare data stored in a text file such as usernames and passwords with data input into text boxes in visual studio vb2008?
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Sep 6, 2009
I have 200+ text boxes in vb.net application. Let me make it clear all are simple text boxes. now customer demand to have formatted number value while input or viewing record. With Format() i can play for viewing but during add/edit mode in text box (While user typing value) nothing happened I want this result 1234567.0090 to 1,234,567.0090 during input.
or guide me any way by which i change all text boxes to mask textboxes through any tool or code.
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Apr 20, 2011
When i use the alt keys how can i set it to select all the input in the text box i am alt to?
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Oct 6, 2010
I am coding a load payment calculator and I am having trouble with a couple things.First the text boxes only allow for one character I think this is due to the CancelKeys part of the code but the code looks correct to me.Also would there be a way you could show me how I could create a load and display login screen for this code? [code]
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Apr 6, 2011
I want to build an application, in which text boxes can take urdu language. I tried changing the font and put it to Arabic but when I ran it and typed something, it types in English.
I do not want user to change regional setting when my application is used.
I have seen this in many urdu applications, when we install, we simply run them without changing any settings.
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May 5, 2009
I am creating a program and I need to validate my text boxes. For the program the user needs to put in a phrase. But I am not sure how to make sure that the user actually entered in a phrase, the phrase isn't (ex.) skldkfdl, or that there isn't a space.
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