Updating Output With A Keypress In A Textbox?
Nov 2, 2009
I have a form thats an invoice generator. You type numbers into the text box and it displays totals in the listbox at the bottom. I was trying to make it so that as you typed into the textbox it would update the listbox.
Private Sub txtWBQuantity_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtWBQuantity.KeyPress
'This section makes it so that you can not type a letter into the txtWBQuantity textbox
[Code]....
It works kind of, after I hit the next key it calculates the total of the first number I typed then writes the next number, how can I make it calculate the total after I hit the key?
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Dec 13, 2011
how can I detect if press Enter in the Textbox Change event and not in Textbox Keypress?
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May 2, 2008
Alright, let's try this again. I have an mdb file as a database in my program, I need this mdb file to be what my published program reads off of. Is there any way to have Visual Basic (2008 Express) not encode my mdb file to Example.mdb.deploy?
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Dec 23, 2010
I use the following code to read the standard output from a command line application from a main winforms application, and then I use the BeginInvoke code to update a textbox with the status. What I am not sure about is if I can have a smoother process. The code loads up about 10 to 20 text inserts, and those are all seen at once... not a smooth process where each status is updated. Any thoughts on if the reading of the standard output and/or the beginvoke code could seem more smooth to the user?
Delegate Sub UpdateUIStatusHandler(ByVal StatusMessage As String, ByVal JobName As String, ByVal Direction As String)
Dim ProcessJob As New ProcessStartInfo(GSyncExe, RunJob)
ProcessJob.UseShellExecute = False : ProcessJob.CreateNoWindow = True : ProcessJob.RedirectStandardOutput = True : ProcessJob.RedirectStandardError
[code]....
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Oct 20, 2008
I am trying to do implement an autocomplete textbox in my application and I have a question about keypress event inside an autocomplete textbox. I have 2 textbox namely textbox1 and textbox2. Suppose to be, when the user pressed the RETURN / ENTER key, it will focus on textbox2. how come that on this event is not triggering.
Code:
Private Sub frmCheck_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'set autocomplete mode in textbox1
TextBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend
TextBox1.AutoCompleteSource = AutoCompleteSource.CustomSource
[Code] .....
Also, I would like to ask if how to validate the input if the value from the textbox matches from the autocomplete values. How can I compare the values of the textbox and the autocomplete source?
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Mar 18, 2010
anyone know how to invoke the KeyPress event ? This code shows what I would like to do, but it simply calls the eventhandler and does not insert the text into the text box, so is not what I want/need.
[Code]....
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Jun 11, 2011
i want to search data according to textbox i want to write a code in eventstextbox1_keypress whenever you write a word L in textbox so the dgview row select the row where the row starts with L and after that i press I so the select dgview row whrer
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Jun 10, 2011
I know you can validate textbox text by using the keypress events. But the form i'm working on has multiple groupboxes with multiple textboxes. So rather than having a sub routine to validate every groupbox, i was wanting to have just the one keypress event that handles the textbox entries, and depending on the textbox calls a specific validation routine.[code]
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Jan 15, 2009
I have to create a textbox and a label component. The textbox object will have to behave under the following conditions: 1. It will only accept letters and the ENTER key as input.
2. As an extension of condition #1, a message will appear whenever an invalid key is pressed
[Code]...
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Apr 5, 2005
i know this has to be simple but i can find anything anywhere tonight on how to check if while a textbox has focus if the ctrl+v or ctrl+c was pressed i simply need to use it like such:[code]
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May 11, 2012
This is my code:
Private Sub prices_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles wholeprice_input_new_item.KeyPress, dozenprice_input_new_item.KeyPress, detailprice_input_new_item.KeyPress, costprice_input_new_item.KeyPress
[code]....
I want to validate all the characters. How I can make the event keypress validate all characters in a text box?
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Jun 4, 2009
I have a TextBox which Is allowed only to read certain characters. I use KeyPress event to handle this event. I understand that The KeyPress event does not handle the pressing of the DELETE key on the keyboard. I do not want the user to be able to delete characters in the txtbox by using the DELETE key, I want the user only to be able to use the backspace key. I am writing this code in Visual Basic 2005. The following code appears to work in handling the DELETE key, but I am concerned that I might get bitten by the fact that I am using KeyDown and KeyPress on the same control (txtSource).
private sub txtSource_KeyDown(byval sender as object, byval e as KeyEventArgs) handles txtSource.KeyDown
IF e.KeyData = System.Windows.Forms.Keys.Delete then
e.handled=true
end if
end sub
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Jun 22, 2010
move the focus to the next TextBox (don't worry about the Case 38, 58 etc too much I).
My Code:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'(Unrelated code here)
AddHandler Form1.KeyDown, AddressOf EnterkeyHandler 'Would like to understand this better
[code]....
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May 31, 2011
I have the below code on the KeyPress event of a textbox howver a need has now come in meaning I have to do myTextbox.Text = "A input string"
Private Sub ChequeAmountKeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtChequeAmount.KeyPress
Dim tb As TextBox = sender
If (e.KeyChar = "." AndAlso tb.Text.Length = 0) Then
e.Handled = True
[Code]...
This input string could contain a format that I do not want and whilst the keypress event caters for the need when the user is typing I need to handle it in the case of a text assignment.I thought firing the keypress event after I assigned the text property but I dont think that will offer what I want.
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May 23, 2011
When i am pressing any key in the textbox it will return "A" Character.[code]...
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Mar 8, 2012
I have two issues. The first is that I want to make a textbox scrolling similar to how credits scroll. I don't want it to move on the form, just to scrolling the text down a line/pixel. I thought I could do it with the "Lines" element, but I'm not exactly sure how to execute it.
The other problem is with my flash screen. Right now I have it set so when a button is click, it goes onto the main form. I don't want to use the button but rather have it so if Enter is pressed at any time, it'll go to the main form. All the solutions I've tried to use involve the "e.Keycode" code, but for some reason its unavailable.
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Aug 13, 2010
I have several multi-line textboxes that I want to lose focus (i.e. when the user presses the right arrow key) but the control wil not relinquish the focus.Simply put, I first verify if the selection start is at the end of the text, if it is, and the user presses the arrow key, it should move to the next textbox. some debug.print code placed in strategic locations indicates that the target textbox gets focus and immediately loses it and the source textbox gains focus once again. Essentially not allowing the textbox to lose focus.
Select Case
Case Keys.Right
tbRight.Focus()
[code]....
After changing the source textbox multi-line property to false, it behaves as expected. Is this a "feature" .. surely I don't have to resort to "SendKeys"
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Mar 10, 2009
I have a simple question regarding the KeyPress event. I'm trying to make it to where my TextBox on my form can only accept numbers 0-9, backspace and '.' /without quotes. I've successfully got it to accept numbers 0-9, accept backspace, I'm just wondering - what line do I add so that it can accept periods as well?
Here's my
Private Sub TextBox_KeyPress(ByVal sender As Object, ByVal e _
As System.Windows.Forms.KeyPressEventArgs) Handles _
TextBox.KeyPress
[CODE]...
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Dec 7, 2009
I have a text box called TxtSearch on my form. The value entered should always be numeric before the search can be done if its any other data type the following Message box is give - Only a numeric value is allowed in this field", MsgBoxStyle.Information, "GCPM.. (Code shown below)
Private Sub TxtSearch_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TxtSearch.KeyPress
If Char.IsDigit(e.KeyChar) = False And Char.IsControl(e.KeyChar) = False Then[code].....
Now, when you copy and paste a String value on the textbox - TxtSearch the KeyPress doesn't work. The TxtSearch doesn't prompt the message and when you click the Search Button the application crashes - dsiplaying an error converting data type varchar to numeric.. What I want to do is if someone uses the copy and paste tool to enter the value in the textbox- TXTSearch and there is a datatype not numeric the message prompt is called ..
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Oct 1, 2009
I have an activex control (ocx) with the following event Bookmark(pMark As String)How can I call it in my VB application and add its output into a textbox?
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Jan 31, 2012
I'm working on an application with 4 combo-box's, "go" and "quit" buttons, and a Multi-Line textbox.The combo-box's are prefilled with options for the user to select and I'd like all of the output to come up in the textbox. We are making a data set opossible output responses; it's going to be somewhat of an exhaustive list.When doing the output to the text box using textbox.text = (whatever), is there a way to have more than one line of output displayed in the textbox? I was trying multiple lines of textbox.text =, but only the newest bit of textbox.text = is displayed.
Private Sub btnGO_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGO.Click
g_sport = cboSport.SelectedItem
[code]....
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Nov 23, 2010
I'm trying to update a text field... in this manner:The main form (where I have the design)
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Feb 28, 2009
I want to have a msgbox when user press 'backspace' in the textbox.
I wrote this:
Private Sub TextBox2_KeyPress(ByVal KeyAscii As Integer)
If KeyAscii = 8 Then
MsgBox("backspace")
End If
End Sub
Why it doesn't work?
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Mar 1, 2010
I've recently asked help on Multilined Textboxes. And from that i came up with this:
[Code]...
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Mar 20, 2012
Im new to coding and this is my first post . so please forgive me if i end up sounding stupid i've been trying to get output of a for loop into a textbox or label for example
[Code]...
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Jun 23, 2011
So I'm attempting to get three variable to print in a string, but I can't figure out how to make the Concat or Join commands to work properly. I've tried assigning the strings to a defined string variable and then "concatting" that and trying to do it in one big line. I keep getting an error either way. Here's what I have so far:
Str1 = PaymentNumInteger
Str2 = NewBalanceDecimal.ToString("C")
Str3 = MonthlyIntPayDecimal.ToString("C")
[code].....
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Jan 31, 2010
how to plot a graph using the out put values in textbox[code].....
this is my code but it doesnt seem to accept the output. It works everytime I enter number only.
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Aug 13, 2009
I have.. Textbox1.Text = Textbox2.Text
I want it so that when you type text in Textbox 1, textbox 2 says it backwards.
Is there a command for this, if so how do I use it?
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Apr 7, 2010
I found the following, but can't get it to work:
get the IP address...
System.Net
Import System.Net
Dim ipEntry As IPHostEntry = Dns.GetHostByName(Environment.MachineName)
[Code]....
I also found the use the WINSOCK control but I'm on Windows 7 64bit and that control doesn't even show up in the components section.
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Oct 9, 2007
I am trying to make textbox1 display the output when the buttons: button1, btn1 and button2 are clicked. I got it working in console.writeline but i want to replace it so that it displays in the textbox.
Public Class Form
Inherits System.Windows.Forms.Form
Dim oOrders As New Order()
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
oOrders.NumBurgers = CType((txtNumberofBurgers.Text), Integer)
[Code] .....
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