Handling More Than One Radio Button With Same Event Handler
Feb 15, 2010
Reading about VB .NET I found out that now it is possible to handle more than one control with the same event handler. What I want is to specify what my Radio buttons will have to do, using a single sub instead of using a sub for each of them. However I am still far from achieving that. I am using something like that:
Private Sub ForAllRadioButtons_CheckedChanged_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged, RadioButton2.CheckedChanged, RadioButton3.CheckedChanged
If sender.name = RadioButton1 Then
Code 1 ...
ElseIf sender.name = RadioButton2 Then
Code 2 ...
ElseIf sender.name = RadioButton3 Then
Code 3 ...
End If
End Sub
However, I get an error message which says :
Operator '=' is not defined for types 'Object' and 'System.Windows.Forms.RadioButton'.
I bet 100 $ that it's something that I don't do it right . Unfortunately I can't get that money. Would it be the same if use the Click event instead of the CheckedChanged ?
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Nov 3, 2010
I have a group of RadioButtons in VB.NET. I would like to create one function that will handle all of them together. My code is below.
[Code]...
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Jan 16, 2009
i declared a global variable button:
Dim button1 As New Button()
Now, i dont know how to add a click event in this button since it is a variable.
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Apr 18, 2011
The event handlers in my parent class are never called though the events are raised in the child class.
The Code:
Public Class childForm
Public Event checkboxchangedEvent(ByVal checkbox1 As Boolean, ByVal checkbox2 As Boolean)
Private Sub checkboxchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged, CheckBox2.CheckedChanged
[code]....
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Apr 20, 2012
When you click on a button control on a web form visual studio automatically put in this code for you in the code behind.
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnFlightInfo.Click
end Sub
Say for example, I wanted to call this method from another method. How would I do that? I know that the sender is the actual button object, but what is e? Here is what I have so far inside another sub. Just trying to get a better understanding of how this method works.
btnSave_Click(btnSave, ??what would you put there??)
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Sep 10, 2011
I've 100 buttons created dynamically in a form. how can i add event handler to them?
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May 25, 2012
During the process of my program I am creating several different buttons depending on what file the user selects. I have been able to create these buttons and I would like to set up the event handler so when the user selects one of these buttons it pops up a message box that shows the user the name of the button they just clicked on. The message box isn't the goal of what I would like to do with it but If I could get that to work I would be able to alter the code to get it to work the way I want it to.
Below is my code that I currently have. I don't have the event handler doing anything at this time as I can't seem to get it to work I am still playing around with it.
ublic Sub resizebuttons()
Dim X As Integer = 175
For Each item As String In CSVInput.selected
[Code].....
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Sep 30, 2009
i have line like this 1.0 30 Blue (2 17.00 54.0) [2 16.03 52.0] 55611 30275 58571 23514 so i want to check after the Value Blue is that "(" or "[" in side my radio button checked change event.
in RadioButton1_CheckedChanged if the value is "( " the message box should come out and say "The file is already in PPin to Probe pattern" else if the value is "[" then there will be nothing to display.
this is my code Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged Dim FileContents() As String = IO.File.ReadAllLines("C:\match1.txt")
[Code]...
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Apr 27, 2009
Im making a site in Visual Studio using vb and I have a variable in page_load but need its value in the event handler of a button for passing on session.
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Jul 19, 2010
I'm creating an ASP.NET Custom Control for my web application which is basically an ASP.NET Button control contained inside multiple <div> elements (for styling purposes).How can I create a Click event handler for my custom control so that my control acts as an ASP.NET Button?
Ie.
<cc:Button id="myButton" runat="server" Text="Submit" />
Sub myButton_Click(sender as object, e as EventArgs) Handles myButton.Click
End Sub
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Jun 8, 2011
i just start programming in asp.net i struggling to add event handler dynamically. here is the scenario when the aspx page is load a link button is add with an event handlerpage load add link button and event handler with link button
Dim products As New LinkButton
products.Text = "Products"
testPanel.Controls.Add(products)
[code]...
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Dec 16, 2009
whats the event handler name for holding click a button.
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Jun 11, 2010
I have a windows form application built with Visual Studio 2008. When a use clicks a command button which does some action, I use SelectNextControl to automatically move to the next control in the tab order once the action is completed.
This seems to work very well, however, I have recently discovered that if the next control in the tab order is a radio button, the call to SelectNextControl does not simply make the radio button the active control... it also causes the click event to fire. When I use the tab key to move past the command button (rather than clicking on it which will result in a call to SelectNextControl), the radio button gets focus as expected and the click event is not raised (as expected). I don't know if this is a bug in selectnextcontrol or the radio button control.
Has anyone else seen/solved this problem? Another forum post discussed a problem where the radio button was automatically checked when a form was first displayed and the radio button was the first control on the form. Seems to be a very similar problem. That post was from 2008.
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May 4, 2012
assistance.My Objective: create project that allows the end user to add data to a textbox then select desired rows via checkbox column in a datagridview. Once the end user has selected all desired rows for update then on button click commit data from textbox to cells belonging to the alert_notes column.
[Code]...
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May 24, 2012
I have a search field and button on my master page. When a user types in a search term, and hits submit, I would like the search results to display in a content page.
What would be the best, most logical way of handling this?
I thought of using FindControl on my content page to find the button, and then somehow figure out if it had been clicked or not...but my logic quickly spiraled downhill.
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May 26, 2011
I'm creating an online exam page with 30 radiobuttons that are created dynamically at runtime. How will I get the click event of each radiobutton and tag it in my method that I will check if the next question is need to be jump or escape. Example: If I'm in question 10 and answer = "Yes", redirect me to Question 15, else go to the next question
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Oct 7, 2011
I have two radio button on my asp.net page, with AutoPostBack = True When I click on either of those, they each set a flag SaveData=False However, when I click on them, the page_load event occurs first, so the page_load event saves the data, then the radiobutton_OnCheckedChanged event is triggered. How can I trigger the OnCheckedChanged before the page_load event?
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Mar 9, 2011
I have two radio buttons. I fhte user swtich between radio buttons, I need to popup warning message and if user confirm, then only I need to swtich to next radio button. Otherwise I shouldnt switch. I am using CheckedChanged event. As by the time I popup warning message, control is already switched. I tried adding and removing event handler.
[Code]...
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Oct 13, 2009
I have a series of radio buttons in a Group Box on my main form. When I run the program, the first step is Sub New and the InitializeComponent() procedure.
It then immediately goes to the first radio button CheckedChanged event. This even currently contains some programming to access information from a database table. However, the program hasn't even gone through the process of opening the database and logging in. This doesn't happen until after my frmMain.Load event. However, this happens after the CheckedChanged event for some reason. So now that I have included the data requirement, I am getting errors because the reader is opening before the connection opens. I know I can set up a Try....Catch....End Try to avoid a user error, but ...I thought the form would have to load before anything about the controls happens and then since I haven't clicked anything, I am not sure why the event is triggering.
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Feb 13, 2009
I have one radio button and one listbox .i want code for display listbox depends on the radio button check true and false.
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Jan 19, 2012
I have a gridview in wpf and have a two radio buttons and a button in template column. How do i access the status of radio buttons in the click event of the button?
<DataGrid>
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding TrackingID}" Header="TrackingID" Visibility="Hidden" Width="50" />
<DataGridTextColumn Binding="{Binding UserFullName}" Header="Name" Width="140" />
[code]....
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May 27, 2011
I'm curious if there is a "check all" kind of thing for a tablelayoutpanel? To explain, say I have TableLayoutPanel1 with 6 radio buttons and I'm doing an error check to make sure that at least one radio button has been selected during a click event. Do I have to do If / and with all 6 radio buttons? Or is there something like "If TableLayoutPanel1.checked(obviously not this) = false then".
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Aug 27, 2011
How do I get a Event Handler to fire from within a nother Event Handler?
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Sep 14, 2009
i have problem that i know once someone answers, i will kick myself, but here goes. i need to move the text next to the radio button to the left of the radio button, that part is easy just make sure the the "right to left" is maked yes, got it. but, the problem is i am making a seating chart and the seats are labeled 10-a, 10-b etc.... when the right to left is set to yes my text reverses and becomes a-10 and i can't seem to figure out what is set in the properties the is causing the alpha to be placed before the numeric.
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Oct 10, 2011
trying to write a simple form for calculating professor's salaries depending on their degree and position.my problem is that the when i select a check box, the value is not being updated until i select a different radio button. it probably doesn't make much sense here,
Public Class frmMain
Private Sub optLecturer_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles optLecturer.CheckedChanged[code]....
the values being assigned to my salary label are correct, but are not being updated until i select a new radio button. im not entirely sure how to get around this so that the value is updated as soon as i select the check box.here's when the program looks like:
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Mar 21, 2012
remove an event handler from within the event handler?
I have a class that gets data from a hand scanner. When the scan is complete and the data is validated, the class fires a custom "ScanComplete" event and returns the data in a custom EventArgs.
In the calling program, I'm creating an instance of the scanning class and adding a handler for the "ScanComplete" event. In the event handler I get the data that was scanned and then remove the handler.
It seems to be working but it feels wrong to remove the handler while I'm running inside the handler. Will this cause a problem?
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Sep 9, 2009
I have a Windows Form application that has a global error handler to display unexpected errors.
Namespace My
Class MyApplication
Delegate Sub ProcessParametersDelegate(ByVal sender As Object, ByVal args() As String)
[code]....
1) for the same deployed code, I SOMETIMES get line number in the displayed StackTrace error message and sometimes do not, even when the error message includes source code that I have written rather than a referenced binary. The project is compiled with a DEBUG configuration.
2) The application strangely minimizes to the tray when the error occurs (I thin it is unlikely that anyone can diagnose this issue w/o my more code posted, but I'll mention it anyways)
3) When I try to intentionally raise an error by, for example, dividing by zero hoping to test by global error handler, I get a dialog error message from the interactive debugger rather than jumping into my global error handler (which i want to debug because there is more to it than I posted.) Do you have any idea how to triggerand force teh execution of the global event handler?
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Nov 27, 2010
I'm trying to complete this airline reservation application, but having a problem in this part of the question:Creat an event handler for the FlightBindingSource's PositionChanged event: select FlightBindingSource in the class Name combobox then select position changed in method name combobox to creat the FlightBindingSource's PositionChanged event handler. Write a code to access the currently displayed flight object and pass its flightNumber to method DisplayPassengers as a decimal.This Is my code so far:
HTML
Public Class AirlineReservationForm
Private database As New ReservationsDataClassesDataContext()
Private Sub FillAll()[code].....
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Oct 20, 2009
Below I create an array of labels. I would like to add an click event to my labels. Can someone point me in a direction?
[Code]...
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Sep 24, 2010
When I utilize AddHandler in VB to add my own method to the Click event :
AddHandler Button.Click, AddressOf myButton_Click
I see that my code executes last - after other event handlers for the Button_Click event. Is there a way to insert my event handler in front of other events so that it executes first?
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