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
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Create a DLL component for database operation and use created component in another project. Required methods, events and properties
a. Connect
b. Add
c. Delete
d. Save
e. Record navigation (first, next, previous, last)
f. Properties for all database fields
g. Events for validation of database fields.
I'm having some trouble with a class that uses the ToolStripControlHost, I have to create a label and a label beside the textbox, this works, the problem now and I can not access the property. Text of textbox (txt). the class to this:
Public Class ToolStripTextBoxWithLabel
Inherits ToolStripControlHost
Public Event TextoAlterado(ByVal sender As System.Object, ByVal e As System.EventArgs)[code]......
I need to display images when I press a key on the keyboard. I have a form with a textbox and a label on it. When I type a letter in the textbox it appears on the label. I got that part to work. But now I want to display a image in the label when I press a key on the keyboard. I have found some images on the internet that I want to display when I press a key on the keyboard. For example when I type the letter A in the textbox instead of A appearing I want an image of an apple to appear, or if I type the letter B a banana would appear, or if I type the letter D a dog would appear. I have been searching on how to this I came across the keyboard event such as the keypress event. Can I use a keypress event of the textbox to do this. Can I assign a certain image to a certain key on the keyboard, and have that image display whenever I press that key.
View 7 RepliesHow can I set my application in VB 2010 to do something when I press a certain key on the keyboard? I heard somethin about the Keypress Event but i'm not sure that will actually work. I want a code so that my application can do the following things: If I press either the left or the right Windows Logo key on the keyboard, I want it to make Label2 visible. I already set the Visible value on false in Mybase.Load.
View 8 Replieshow can I detect if press Enter in the Textbox Change event and not in Textbox Keypress?
View 3 RepliesI've got a simple textbox and as the user enters text in the textbox I display a label below with matching words (to what they are typing). When they click the DOWN or UP arrow I highlight one of the words below in the label.
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I have an issue when I place a label box / other component in the MDI Parent form and then open any child form the label box/ other component displayed in child form (Show in SpanShot),
View 2 RepliesI 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
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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?
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.
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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
View 4 RepliesI 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
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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?
is it possible to create a class which has the majority of your keypress controls? Like allowing just letters or numbers in a textbox etc. To make things clearer what i exactly want. I have a textbox on my form. This is a textbox for the postcode. The postcode is supposed be something along the lines of AA 1234. This will be checked on lostfocus.
View 6 RepliesI 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]
View 2 Repliesi 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]
View 4 RepliesThis 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?
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
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
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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
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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.
When i am pressing any key in the textbox it will return "A" Character.[code]...
View 2 RepliesI need a coding for keypressevent in particular properties from the property grid.
It is possible to create an event for these(PropertyGrid Properties) properties?
(or)
How to create custom events for custom properties?
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.
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()
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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"
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
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I didnt know if this was the correct location to post this kind of question. My code is in C# however I am using the visualBasic. Interaction. CreateObject to connect to a OCX file. I notice that this works great for a while but if it continues to do its job for lets say a few days then I get and exception... "Can not create an ActiveX component." I am 100% sure that the ocx and dlls are registed correctly to the system.
View 2 RepliesI am using the following code to send an email thru Outlook 2003:
Dim omsg As Object
Dim oRcp As Object
Dim objCDO As MAPI.Session
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I am develpoing a small vb.net forms application. From that trying to load the Autocad using the following code.[code]When creating the application for first time, it works fine. Loads the Autocad correctly. But for second time if run the application the following runtime error is occuring. "Cannot create ActiveX component" at the CreateObject line.I cant predict what is the problem. I've included the following references in my program.[code]
View 1 RepliesI am developing a VB2008 application that makes use of the Office Access runtime.I started development on Win7 64-bit & Visa 32-bit machines.The application runs just fine on the machines with VB2008 installed.I have used a number of tools to build the application installation and I am running into the same thing on all target test machines (currently XP Pro).The system fails when the Office Access portion of the code starts to run.Below is the Just-In-Time debug info.
I also notice that .NET 2 is being called.Is it wise to make .Net3x the preferred .Net client?In the application, I have specificed .Net3 (however, it does not look like it is being called).The target test machine (XP Pro) has .Net 2.3 and 4 installed.See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.Exception: Cannot create ActiveX component.[code].....
How do I create a .NET component as a DLL and distribute it?
View 3 Replieswhen is the neccisity to create a component services for a DLL.
i ask because , i have a dll and the website runs fine if i just register the dll.
so when should i go for componet services