VS 2008 Delegates For Textbox Key Press Event?
Apr 22, 2010
well i want all my textbox's event- keypress should be called by using Delegate
The Function i need to preform on them is only Numeric
My code
Public Delegate Function mydelegate() As Char
Public Function key(ByVal e As System.Windows.Forms.KeyPressEventArgs) As Char
Dim ch As Char = e.KeyChar
[Code]....
The problem comes when i use this code it surely gonna restrict me entering the alpha characters but i m facing problem is i can enter only a single digit number
i.e when i try to enter 45 it's simpley don't expect it only value which it is accepting is [1],[2] what i want it should accept the value's in two digits,three digits and so on..
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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 16, 2011
I'm building a windows application to process the editable pdf template, using iTextSharp. The pdf template has button fields, on click of which additional sections are inserted into the pdf file. Now, I have to invoke the pdf button press event programmatically through my vb.net code to insert the additional sections into the pdf. How can I get the button fields and how can I invoke the button press event programmatically.
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May 7, 2009
I can come up with, if I understood the solution better, I could probably phrase a better subject line.[code]...
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May 26, 2009
I was going through tutorials and found the topic of Events and Delegates. However, I fail to understand why should this be required ? Instead of having to raise events, can't one just call the necessary procedure ?Sorry for posing this basic question. Any replies or even links to existing posts are welcome. [Also not sure if this question strictly falls under VB.NET category.]
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Nov 7, 2011
I am fairly new to VB .Net and have ran into an issue when working with multiple threads using BackgroundWorker.In the new thread that is created I need to access TextBox1.Text to know what the user's input was.For example:When the 'OK' button is clicked BackgroundWorker1.RunWorkerAsync starts a new Thread.
Private Sub OkButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OkButton.Click
'We cannot start more then one calculation at a single time
OkButton.Enabled = False[code]....
I know how to use Delegates and Invoke to change the value of a Textbox, but I cannot figure out how to simply access the text from a Textbox.
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Jan 30, 2010
is there a way to check how many delegates are attached to an event, let's saymybutton.Click has 10 handlers, 5 by using the Handles keyword and another 5 added by using the AddHandler method (well this is not the point, then point is that i do not know how many handlers there will be). and i would want to create another button that had all 10 handlers of mybutton.Click attached to its Click event as well.
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Dec 3, 2009
I'm looking for a reference that can explain the concept and use of the DataReceived event and Delegates subject.The reference has to be pretty simple as I'm an "old dog attempting to learn a new trick". I'm not ignorant of things programming, but am ignorant of things dealing with serial communication in VB2005.I already have a couple of O'Rielly books ("VB2005 Cookbook", "VB2005 Desktop Reference") and I have a book that deals with serial communication from a Jan Axle-something. Neither O'Rielly books have any info, and the Axle-someting book's remotely related examples are too confusing for this slow learner.
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Nov 10, 2011
I may be doing this wrong but I want to call a sub when the user presses enter on a textbox. The sub then shows a window in dialog mode. When I close that window, the computer makes a ding sound. Why is that? Is there a better way for detecting enter being presses on a textbox and not getting that ding?
If e.KeyChar = vbCr Then
LookupItem()
End If
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Sep 4, 2010
I recently finish my Microsoft VB.net training and learning something about delegates. I have two delegates in a excel source to control a progressbar and a text box on the mainform
Public Delegate Sub ReportProgres(ByVal percent As Integer)
Public Delegate Sub ReportText(ByVal Mytxt As String)
I want to use these delegates in a second excel source also. It gives declared in the first excel file and two conflict errors in namespace windows application.
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May 21, 2009
I have Visual Basics 2008 express and I tried to make a autotyper, so this is my
Button1: Timer1.Start
Timer1: Timer2.Start
Timer2: SendKeys.Send(Textbox.text)
Button2: Timer2.Stop
So it was my first try ever with VB and it kind of worked... Only 2 problems;
1. Button 2 doesn't really work, I have to click it really many times, then go to a different window, then click it really many times again, in the meantime it keeps on spamming
2. How do I make my autotyper press enter every single time after the textbox message was typed?
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Aug 16, 2010
In VB6 we had a code inside textBox_MouseUp to call textBox_KeyUp(-1, 0) and the signature of KeyUp was
Private Sub textBox_KeyUp(ByRef KeyCode As Short, ByRef Shift As Short) Handles textBox.KeyUp
Now when I migrate to .NET I changed the KeyUp event to Private Sub textBox_KeyUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles textBox.KeyUp
How can I do this call textBox_KeyUp(-1,0) now from textBox_MouseUp event?
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Jun 14, 2011
what is the difference between key press event and key down event in vb.net.
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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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May 18, 2010
I'm creating a shooting game for my programming class' final project and I want the user to have to press "R" on the keyboard to reset their ammo back to 12. Here is like what I have so far[code]...
I've Dimmed intAmmunition globally so that it applies to all sub procedures. When I debug the game, the ammo goes down by one for every time I shoot (click) and when intAmmunition <= 0 all targets are disabled. I press the R button and they become enabled again, but then the label continues to drop from 0 to - 1 and so on.
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Jan 22, 2010
i have 2 forms.in form1: i have 1 combobox in form2: i have 1 textbox and 1 button...I want to make in form2 when i enter some text in the textbox and press the button the text to be added in form1 combobox
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Jun 30, 2010
I want to build in the functionality so that when eg, the Key "1" is pressed it can trigger an event like eg. set the counter to zero.
I have used the following code to test the function but it doesn't seem to work. I don't know if I have placed it in the correct area or it is doing what I want it to do as there is no message box that appears.[code]...
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Jun 21, 2010
I am having a requirement in my project where User press '.' in his num pad and he wants the character ',' to be displayed (dats bcoz he is French User).
I tried changing the e.KeyCode but it is a readonly property.
Is there any other way to change the key in key events?
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Apr 30, 2008
I need the code for implementing the keypress event for a textbox in a web application going to be developed using vb.net cum asp.net.
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Jun 8, 2011
in my problems, i want to use event keyboard press 'Enter' on textbox, i'm very confuse because in event property from textbox there was Enter, but after I double click and read statement in that, after i test my program, there was nothing ,
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Sep 8, 2011
If i type values in textbox the linklabel should be visible otherwise it shouldnt be visible...
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May 26, 2010
I want a variable (intAmmunition) to equal 12 when the R key is pressed. How would I do that in Visual Basic 2005?
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Dec 18, 2011
How to make an event for keydown, but for second press?
Yes, i know how to make event, eg.:
If e.KeyCode = Windows.Forms.Keys.Escape Then
Me.Close()
End If
But i want code for second press. For example...:
First use button space: open form1 Second use button space: open form2
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Oct 15, 2011
how can i trigger a label_click event on the press of a key.
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Jun 13, 2011
what is the difference between key press event and key down event in vb.net
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Jun 4, 2010
I am having trouble with getting a delegate to work properly.Here's my
[Code]...
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Mar 27, 2009
What are Delegates and Multicast Delegates in VB.NET? How do I use them? provide a simple example to illustrate the concept.
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Aug 17, 2009
How i can call one web page in VB.net when Press CLICK EVENT.???
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Jul 2, 2010
In Key Press Event i have put the logic of search in textbox, when i press enter key it will take the values from textbox and brings the data in DataGrid.In another event of GotFocus there is an logic of autocompletestring collection from Table. If i type a in that textbox it will shows all the suggested string in that.
If i comment the logic of GotFocus Event for textbox for autocomplete suggestion then only then Key Press events work else its not working. I dont know why its happening.
[Code]...
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May 30, 2007
How I can hook on my entery tool forms when user press ENTER key to go on next Control which can be any dot.net control which is indexed by TabIndex?My client don't like to use TAB key to jump on next control, they like ENTER as well and we need to refactory all VB 6.0 projects in VB.NET 2005...
Private Sub txtField_KeyPress(Index As Integer, KeyAscii As Integer) If KeyAscii = vbKeyReturn Then
KeyAscii = 0 SendKeys "{TAB}" End If End Sub
Of course above pice of code is just sample code how this is working in VB 6.0... How I can do something like this in VB.NET 2005?
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