The below code allows me to prevent a textbox to only allow numerics, backspace. I would also like to have the textbox to accept ":", but struggling to find the correct way to do this. Could anyone advise? Below code is in the Keypress event.
If Not Char.IsDigit(e.KeyChar) Then
If Not e.KeyChar = vbBack Then
?????????????
End If
End If
I have a textbox that will be used to type a specific time into. What i want to do is for the textbox to automatically have or produce a colon.
For example when typing in 1245 i want it to automatically appear as 12:45.
I have tried my hand at format() and .ToString but to no avail really.
I've got this little 'Sticky Notes' type of application and the form I have is a borderless, taskbarless form and for Windows 2000 compatability I'm using VS 2008 and targeting the 2.0 framework. One of the hurdles I have is that in XP, Vista & 7 when you click the Show Desktop button all of my note's windows get minimized and without a taskbar icon, it's not easy to get them back (at least not for a normal user) & I'm looking for a way to either right after the windows minimize I just have them all show again or if I can skip the minimizing message in the wndproc altogether that'd be great.
I've put together a test app that'll show the messages in a listbox for the form, but I'm not sure how to go about skipping sending the message to the form's base class. Here's a snippet, listMessages is the listbox on the form:
Private Const WmSize As Integer = 5
Private Const SizeRestored As Integer = 0
Private Const SizeMinimized As Integer = 1
[code]....
I am using MDI forms and I would like when a button is clicked, if the form is already open. it just puts it on top instead of opening the same form again.
View 2 RepliesI have a lot of forms that get placed in specific locations at run time. I need to disable relocating these forms, but I would like to keep the borders and titlebar.
I have tried jmc's codebank submission called "immobilise" but did not work for me, forms were still draggable (could be my mis_use, but no errors were thrown)If this isn't doable, is there a way to hide only the titlebar, but maintain the 3D blue borders all around?
I have a textbox to which text is continuously appended (every second new status data at the end).I would like to act it as follows:- When the cursor is positioned at the end: Stay at the end, scroll the textbox (text disappearing at the top).- When the cursor is positioned somewhere else (not at the end): Stay exactly there, don't move the cursor, don't scroll, don't change the top line of the textbox.This seems to be surprisingly difficult (tried quite several ways).This is how far i came:
Private Sub addToTextBox(ByVal daStrg As String)
Dim posAtEnd As Boolean, selPos As Long, selLng As Long
If myTextBoxForm.txBox.SelectionStart = myTextBoxForm.txBox.TextLength Then
[code].....
I am making a webbrowser,how to prevent my browser from opening new IE windows. Because what happens is, there are some links that will open new windows and therefore IE comes in place because it is set as default windows browser which I really don't want because my browser looks really bad if it opens links in another webbrowser.I want it to be just a basic browser, it has only one window, and it should navigate within that window. This is because the browser is integrated in a bigger application only for some website applications that are related to this main application.I am using VB.net 2008 Express Edition?
View 9 Replieshow to prevent duplicate RECORDS in datagridview cell vb.net
View 2 RepliesI have spent the last hours trying to make an easy fix for this. Setting it to enabled=false is no good in this case. What I was looking for is a way to prevent the user to place the cursor in a multiline textbox. This is a read only textbox, and the user can't type anything in it, but for some reason he can still place the cursor in it, that is what I try to prevent.
View 8 RepliesI have a textbox where the user enters their name, however it is possible to enter numbers in textbox, i was wondering if there is a pre existing function that only allows alphabetical characters to be entered?
View 17 RepliesHow to prevent textbox to be not accepting numbers in first
5 digits
Only characters in first 5 digits and other digits accept
numbers and characters
I have a Textbox in which the user types in a name for a folder to be created. However, Windows does not allow the followin chars:
[Code]...
I have a main form called frmMain from which all other forms and actions are launched. In the menu bar on frmMain there is a text box where the user can enter an inventory item number. This shows a new instance of frmBundleSearch. This frmBundleSearch may get multiple new instances opened at a time. What I would like to see is the frmMain in the taskbar separate from the frmBundleSearch when it has enough open instances to begin stacking in the taskbar. Right now, when I debug, when the taskbar starts stacking the application's forms, all of them are in the same stack, so right-click and "Close All" nukes the whole app. Is it possible to keep them separated?
View 6 RepliesBackground: I have an web form that autpostbacks a list of bundles to a listbox based on the carriers selected. When Postback happens, all user entered data is cleared. How do I prevent the AutoPostback function from clearing entered data from the forms? [code]
View 1 RepliesPreferably without turning the "Enabled" property to false, because I still need to output text from it.
I made a custom control in which there is a textbox but I want it used only as an output control, for showing text and stuff. Problem is that as soon as my form opens up the focus is turned to the textbox and I cannot catch my keyboard events on the form anymore(since the other controls are pictureboxes). I need a way to make this box "unclickable" or any way in which it is impossible to attribute the focus.[url]...
When you use a tab key to select a textbox, all text in it is automatically selected. What's the easiest way to prevent this from happening? (Setting the selection to none in Enter or GotFocus events doesn't work)
View 1 RepliesI am making a chat program, that sends the message by pressing enter key. But when im pressing enter in the textbox im getting extra blank space. Is there any chances to remove this blank space from the textbox by using single code
View 12 Replieswhat is code i should use if i want to prevent user not to leave empty word in text box after user click save button.Oh ya, i am using visual studio 2005, databse sql 2005 .Here is my code
Private Sub btnregister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnregister.Click
If MsgBox(" Are You Confirm", MsgBoxStyle.YesNo) = vbYes Then
[Code].....
I have a custom text box component (inherits from system.windows.forms.textbox) that I created in vb.net (2005) that handles the input of numeric data. It works well.
I would like to suppress the validating and validated events from firing if the number hasn't changed. If a user is tabbing through the form and tabs from the text box, the validating/validated events are fired.
I was thinking that the text box could cache the value and compare it to what is listed in the text property. If they are different, then I would want the validating/validate events to fire. If they are the same, nothing is fired.
I can't seem to figure out how to suppress the event. I have tried overriding the OnValidating event. That didn't work.
Update:
Here is the custom text box class. The idea is that I want to cache the value of the text box on the validate event. Once the value is cached, the next time the user tabs through the box, the validating event will check to see if the _Cache is different from the .Text. If so that is when I would like to raise the validating event to the parent form (as well as the validated event). If the _cache is the same, then I don't want to raise the event to the form. Essentially the text box will work the same as a regular text box except that the validating and validated method are only raised to the form when the text has changed.
Public Class CustomTextBox
#Region "Class Level Variables"
Private _FirstClickCompleted As Boolean = False 'used to indicate that all of the text should be highlighted when the user box is clicked - only when the control has had focus shifted to it
[Code]....
How do I use the class XDocument and set its attribute name to accept colon character? I get this error
"The ':' character, hexadecimal value 0x3A, cannot be included in a name."
Dim ns As XNamespace = "http://www.sitemaps.org/schemas/sitemap/0.9"
Dim xi As XNamespace = "http://www.w3.org/2001/XMLSchema-instance"
Dim sitemapValue As New XDocument(New XDeclaration("1.0", "utf-8", ""),
[Code].....
how to find the words in richtextbox that has : (colon)?
View 2 RepliesI am using this line of code to open some files from a CD.
Dim f As FileStream = New FileStream(FILENAME, FileMode.Open, FileAccess.Read, FileShare.Read, 8192)
Everything was working great until i found some files from an Unix CD that have colons on its filename.
"D:Perl5-32PERL-MANoptperl_32manman3ActivePerl::Config.3"
When trying to open this file i get an exception. Is there another method i could open this file on Visual Studio 2010 on Windows 7?
I would like to parse a string to extract embedded parameters. [code]...
I split on the colon, then check each entry for the string "image", when found, I then extract the next entry.
I would like to use the ParseQueryString()method which works fine with equal signs and no spaces. Does anyone know if this method can work with other delimiters and spaces?
I have a text in this format:
term: 156:59 datainput
I want to remove the ":" between the number and then replace it with something else so the text can become
Usage of colon (i.e. : ) for multiple statements?
View 1 Replieswhats wrong with this:
Dim Cmd As New System.Data.OleDb.OleDbCommand()
con.Open()
Cmd.Connection = con
[code]....
i need a colon somewhere. however i havent needed one in the past using sql and vb.net?
ve got a string of email addresses that are semi-colon separated.I need to bring the string into an array (I think).Then, I need to loop through
View 5 Repliesearlier with my program question and found out that """" is how you make " become another variable in the function:Robert = Replace(Robert.ToLower, """", "A")So now I am also trying to work with other keys like the semi-colon. I put it in the function like this:Robert = Replace(Robert.ToLower, "char(59)", "B")I also tried to insert ; in place of char(59) with in front of it as an escape key, none of this worked. It still just gives me a ; when I type
View 2 RepliesHere is a code to insert data to DBaccess from textbox. When I write a colon(') in the textbox to add to DB it caused error and show me this Message "Syntax error in string in query expression '''')'
Code:
Dim conn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" _
& "Data Source =" & Application.StartupPath & "Store.mdb ")
Dim cmd As New OleDbCommand
cmd.Connection = conn
'Add text to DB
[Code] .....
I have a form where a number of textboxes are programmatically created within a flowLayoutPanel and named by adding together 2 strings.
With the click of another button i hope to have all the values entered into these text boxes stored in a text file. However, i cant seem to find a way to add strings together to allow me to retrieve the values entered within the text boxes created.
Below is the code i have so far: BTW FLP is my flow layout panel and c is my calculated nmber of textboxes that are created.
Private Sub createTB(ByVal c As Integer)
Dim x1 As Integer = 1
Dim y As Integer = 2
[Code]....