Windows Applications - When Button On Form2 (child Form) Is Clicked, It Raise An Events
Mar 15, 2009
I have a windows applications. Form 2 is child form of Form1 . Basically when button on form2 (child form) is clicked, it raise an events, which writes something in testbox on form1 (parent form). This is my code
parent form form1
Public Class Form1
Public mycount As Integer
[CODE]..............
This is the first time I am tring to use events.. I am not sure what's going wrong.. the textfill event is never called from form1.
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Jun 21, 2012
Ok, so I'm writing a basic windows form application in VB.net as you do and need to be able to raise keyboard events based on data received from the serial port. I'm able to receive the characters that I want (lets say a lower case c) and display them. Its also easy enough for me to find the keycode. What I want to do though is tell windows that key "c" has been pressed. The application is paired to a bluetooth terminal, I wanted to have the experience of writing the code behind this myself rather than using another library although it seems I've failed already. How would I go about doing this?
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Oct 1, 2009
I am hoping there is a way to do this.I have a base class that has event handling in it. My console application is running my workflow. Part of that workflow is to raise events at specific intervals in a separate thread to broadcast the workers' current state (a heartbeat I have heard many call it).
I also have another program in the same solution that is a windows form that I want it to be able to listen to what is going on in the console application so that it can display the worker states. I have tried running both at the same time and verified the events are triggering, but the monitor is not finding any of the raised events.
I am fearing that there is no way to do this, and I will need to go to a database logging method or something else... but in the off chance someone knew how to communicate between applications with event (or event-style) logic, I would appreciate it.Currently the applications are running from the same location. The goal is that the monitor application will eventually be attached with a broadcaster for our network so that our workstations can monitor for certain worker states without being logged into the machine and the main monitor will show us the full status of all the workers.
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Mar 30, 2011
Problem that you may have when dealing with two objects that are raising some events. Here, to make it obvious, I am closing the form, but the problem can be experienced with any other 2 classes event. First, what is the problem !
Let suppose that by pressing a button, you want to raise a custom event, then execute a method and then close the form
In that case, you may use a code similar to this
Event BeepIt()
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
RaiseEvent BeepIt()
[CODE]...
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Oct 30, 2010
Using 2 forms how would I click one button, from another form? ie In VB 4,5,6, I would used to do it as:-
Form 1:
private sub Command1_Click()
msgbox "Say Hello"
End Sub[code].....
If I clicked the button in form2, it would automaticlly, click the button in form1. Do I, do it the same way in VB Express or has it changed?
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Mar 16, 2009
That's all I want to do but I get errors when I do this:
Form2.show ()
Me.close ()
Using VB2008
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Oct 5, 2010
I am trying to search if a name exist on the Form1's listview if the button is clicked from the Form2. But for somehow, I don't know why my code is never get fired. Can someone help me with the following code.
Private Sub Btn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btn.Click
Dim f1 As New Form1()
For Each itm As ListViewItem In f1.lv.Items
[CODE]...
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Oct 4, 2011
A Maximized windows form contains a button (Button1) that when clicked upon executes following code:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Bfrm As New frmB
With Bfrm
.Top = 100
[code].....
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Jan 25, 2010
i've a app that starts from a sub in a module, do a few things, and then load the form.
But it doesn't work :/
Here we execute dBase.AddTemporalFilepath
module.vb
Public dBase As New Core.clsDatabase
Public Sub Main()
FurBase.Directory = My.Application.Info.DirectoryPath
[Code].....
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Oct 1, 2009
How can I Collect all the Checked Child Nodes Name From a TreeView Control Using VB.NET Windows Applications.
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Apr 19, 2009
This seems as though it should be simple to do... Form2 wants to execute Form1's picturebox33 event
Form2 has the following code:'delegate pointer to pass args to form1.picturebox33 event
Public Event ExecuteSpellCorrectionSearch(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
[Code]...
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Jul 29, 2010
My VB.NET app supports several kinds of MDI child forms. Some kinds, but not others, are 'troublesome' -- they cause the focus mechanism to become weird. Once a 'troublesome' child form has been opened, NONE of the MDI child forms will become activated unless I click on either the title bar or the border. Clicking in the client area does not activate the child form -- its title bar remains gray, and it does not receive Activate or GotFocus events. Strangely, however, the clicked-on form actually DOES receive the focus, because its controls receive mouse and key events. Only the Z-Order and the highlighting do not change.
Once this problem develops, it persists even after the 'troublesome' form is closed, and it affects child forms which are opened afterward. However, if ALL of the child forms are closed, the problem clears up, and new child forms behave normally -- until the next 'troublesome' form appears.
I have no idea why one kind of child form is troublesome, and others are not.
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May 8, 2010
My VB.NET app supports several kinds of MDI child forms. Some kinds, but not others, are 'troublesome' -- they cause the focus mechanism to become weird. Once a 'troublesome' child form has been opened, NONE of the MDI child forms will become activated unless I click on either the title bar or the border. Clicking in the client area does not activate the child form -- its title bar remains gray, and it does not receive Activate or GotFocus events. Strangely, however, the clicked-on form actually DOES receive the focus, because its controls receive mouse and key events. Only the Z-Order and the highlighting do not change.Once this problem develops, it persists even after the 'troublesome' form is closed, and it affects child forms which are opened afterward
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Sep 5, 2009
I have already done the creation of button and the dragging of button at runtime already.But now i need to know how do i save the last dragged button on the form and also detect the name of the last clicked button.so lets say i now drag a button to coordinates 25,254. so when i exit the form and the next time i launch it, the button will still be at 25,254. and this one will go on for the number of button i created like 100. so when i launch the form the 100 button will be at the exact position where i last saved them.the second part is lets say i created button1 and button2 on the form in runtime. so when i clicked the first button, it should display button1. and if i clicked on button 2, it should say button2. same goes for like 100buttons.
[code]...
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Sep 19, 2011
just as what i mentioned in above, the problem is i add a new windows form, in which is a database with dataset, in the main form when i press a button. this database form should come out, i used the easiest way like form2.show(), while conforms
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Jun 12, 2009
get a button on form A to open form B and then close (not hide) form A when clicked?Background: I am coding a VSTO application for Excel in VB2008.
Private Sub FormAButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles FormAButton.Click
Dim FormB As New FormB
[code]....
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Oct 27, 2009
I have form 1 which will raise an event for form2 after doing some calculations. I know how to raise an event in form2 and then write the sub in form1 but i cannot do the reverse... how can I do this in reverse??? I cannot raise the event sub in form2 is not responding.
Example:
Form1:
Code:
Public Class Form1
Event test()
RaiseEvent test()
[Code] .....
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Jun 23, 2009
I'm using a com object in my vb net application. I'd imported the com library and everything is fine.But the object does not raise events, None. I need to know if there is some way to achieve that it works.
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Jun 18, 2012
ith the following windows form applications in VB, question is attached.
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Dec 24, 2010
I was wondering about the EventInfo.GetRaiseMethod and EventInfo.GetOtherMethods methods. Apparently, the CLR supports 4 kinds of methods associated with events: add, remove, raise, and "others". But events created in C# only have add and remove... I assumed that raise was used in VB, since you have to specify a RaiseEvent method when you declare a custom event, but apparently it's not the case: GetRaiseMethod always returns null.what's the point in having a raise method associated with an event if it's never used? Is there a specific MSIL instruction to raise an event using this method? (I couln't find anything like it in the opcodes)what are the "other" methods returned (well, not returned actually) by GetOtherMethods? What's are they supposed to do?are there types in the BCL that implement those special methods?
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Aug 6, 2009
I'm trying to understand the concept of Raise Events and threading, From this tutorial i've just read in the author example he wrote that you need to use an event when calling sub when using threading, but he didnt elaborate enough in this subject, why can't I just call the function/sub as i always do?
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Feb 8, 2010
How do you fix this code so it works?
Code:
Public Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
[code].....
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Jan 28, 2010
My Problem is that I have a form that when a button is clicked loads a new form - code below. I want to fill a list view with data from a database in columns but that isn't the problem: Whenever I run the program and try to open the new form, the program runs up to the Rec = Connection.execute line before going back to the first form where I opened it up.
Public Class Form2
Public Const ConnectionString As String = "Data Source=PeopleBase.sdf"
Dim connection As New ADODB.Connection
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
I should also explain that the database is a local one and there are no errors or warnings that show up, it just runs like the while loop part isn't there.
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Apr 25, 2011
EF Navigation properties don't raise OnPropertyChanging and OnPropertyChanged Events.When looking into the entity framework auto-generated code a simple property will have a setter that looks like this:
Set
OnNameChanging(value)
ReportPropertyChanging("Name")[code]......
Seems like the navigation properties should call just call the 4 change notification methods. Do you have any insights on why the EF generater would be implemented in this manner? Is there an option somewhere to turn on notification or a work-around? Also, I assume that editing the designer generated code is bad practice, correct?
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May 26, 2009
I've created a VB.Net ClassLibrary with a UserControl in it. I can load it from an HTML page and call the methods that I created. This works as expected. I've tried several examples for how to raise an event from the VB code to the js caller, and none of them seem to work (I'm using IE7).
[Code]...
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Jun 1, 2011
okay on my main form i created an instance of another form
Dim secondform As New frmSecond and i called it with this
secondform.ShowDialog() okay now when the secondform pops up there is a "OK" button and "Cancel" button. how can i tell which button was clicked? If "OK" was clicked i want to perform a task, otherwise nothing happens..
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Jul 13, 2011
I have created a form in VB and have coded a Clear Form button into it. The issue I am having now is coding the 'Submit Form' button to have it email the completed form to 2 employees in the bank that I work at. The form will be uploaded to our server for other bank officers to complete and then submit.
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Dec 13, 2010
I'm making an equation program and I want to have a main menu where the user can select an equation and then when one of the buttons is clicked, it closes the "selection" form and opens the appropriate form. For now I just have it set to show the proper form (for example, Form3.Show) but when I try to do something like Me.Close() after it, everything closes instead of keeping Form3 open.
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Nov 17, 2011
I also need to know how to make the same button create a folder to save a txt file in. I havnt yet figured out how to save changes made into my program, that way next time i open it, i can continue where i left off.
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Jun 12, 2011
I am trying to update my form once the delete button is clicked. There are several fields like Name, Date, Date of Birth and so on. Once I delete a record I want the form to automatically load with new / updated data. This form fetches data from MS Access using OLEDB I have spent a long long time trying this but did not get any solution.
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