Checkbox MDI Application - Use Checkboxes To Show And Close Child Forms?
Aug 30, 2009
I'm trying to use checkboxes to show and close child forms.I'm using MDI. I want to try and make the child form show inside of the parent form like it should.This is the code I was using:
[code]...
And that works, but if I close the window instead of using the check box and then try to use the checkbox to open the new window again i get an error:Object reference not set to an instance of an object.Also I have more than one checkbox (each one serves a child form) and I would like to be able to open and close any of the child forms at any time.
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Jul 14, 2012
I'm in the process of converting a VB6.0 application to VB.Net (2008 Express). I have a MDI parent form, I'll call mdiBackground, and 4 MDI child forms, frmStatus, frmShow, frmQwerty, and frmSentence.The layout is as follows:mdibackground - has the menus at top and is a container for the child forms.frmSentence - appears at the top frmShow & frmQwerty - appear at the left and when one is closed the other one is in the same position.frmStatus - appears at the right, it has buttons which control when frmShow and frmQwerty are to appear I have a couple of regular forms that act as dialog forms. The Me.Close() works fine on these.
[Code]...
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Oct 5, 2009
I have been looking around at how I can close my parent form and my child form. This article: [URL] has some information but it either doesn't work for me or I am putting the wrong information it. What I want to happen is when a button is pressed I want to close both parent and child forms and then go to another form (frmResults). Then there will be a button on frmResults that will take me to the beginning form (frmPTCalculator). With this code below when I click the button on frmCalculator it goes to the MDI form and both parent and child forms are there.
my Parent form is called: frmGender
my Child form is call: frmMale & frmFemale
Below is what I have tried from the example in my Child form frmMale:
Private Sub btnResults_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnResults.Click
Dim frm2 As frmMale = New frmMale()
AddHandler frm2.FormClosed, AddressOf frm2_FormClosed
[code]....
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Dec 22, 2010
When my application first loads the parent opens and I select my child form from toolstrip:
'In parent open the form when option is clicked
Public Sub Showfrmitemreview(ByVal sender As Object, ByVal e As EventArgs) Handles itemreivewStripMenuItemA.Click, itemreviewStripMenuItemB.Click
[Code]....
Nothing happens I don't even get an error message. I've played around with the code numerous times and the only thing that worked was to have it open outside of the parent which I do not want to happen.
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Feb 9, 2010
The problem: A dialog's FormClosing() event is raised if it's a child, ie it's Owner property is set to the parent form, but NOT if it's a child-of-a-child. So closing the main form does not call the closing event on any grandchildren dialogs.
The Details: A dialog prompts to "Save Changes?", with YesNoCancel buttons, in the FormClosing() event. Clicking Cancel keeps the dialog open, ie cancel closing.
Private Sub Dialog_FormClosing(...) Handles Me.FormClosing
If MessageBox.Show("Save Changes?", YesNoCancel) = No Then
e.Cancel = True
[Code].....
Then the FormClosing() event on the child does not raise, if the top-most parent is closed.
Is this a know design limitation in the framework? Is there anything I should consider before I start hacking a nasty solution for this?
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Feb 29, 2012
in Form1, I have this code
Dim FormTwo As New Form2
FormTwo.ShowDialog()
Close()[code].....
if I use Application.Exit, it will close all 3 forms.. But all I want to use is Close so that every time I show the Form2, it will close the Form1 first.. the same when I show the Form3, it will close the Form2 first.
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Sep 21, 2009
I have a form that has around 4 txtboxes. Data is inserted into these boxes and then a "Save" Button is pressed. I have a GridView added to my form and want to view the entries. The issue I am having is that when I click the save button the data doesn't show up in the DataGridView until I close the application and then re open it.
[Code]....
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May 28, 2011
how to get all the active mdi child in an application..it is possible to work? me.ActiveMdiChild.Name
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Jan 23, 2010
I'm having a small problem concerning displaying maximized child-forms in a MDI-application. Everything works fine on Win. Vista but when I start the program on a PC with Win. XP it doesn't look very nice. I found some similar threads on the internet but no answers. Does anyone know how to display maximized windows in MDI properly? [Code] On Vista the child-form switch/appear really smoothly. On XP you can see as they are being maximized.
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Apr 15, 2011
I have a question, I can't really find the answer...Basically I have 2 FormsIn form number 1 I have 2 pictureboxes. I want to create a checkbox in form2 that says if checkbox 1 is checked then show picture 1 in form 1
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Sep 1, 2010
i am trying to figure out how to go about creating dynamic checkboxes on my form when i do not know axacctly how many boxes i will need.The problem is that i do not know how to DIM more than one object. This is my code for creating one checkbox
Dim heckBox As New CheckBox()
Form1.Controls.Add(checkBox)
checkBox.Location = New Point(10, 10)
[code]....
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Mar 9, 2011
I have 11 asp.net checkboxes in my asp.net webusercontrol .. i want when checkbox1 is check thenrest of all checkboxes will be checked and if checkbox is uncheck then rest of all checkboxes will be unchecked how to do it if all my checkboxes are inside webusercontrol panel1.
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Apr 14, 2012
ASPX Page:
<asp:ListView ID="lvSubjects" runat="server" >
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceholder" runat="server" />
[Code]....
Where am i going wrong?? i do not get any error...but this code is not working for me.
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Aug 27, 2009
Is it possible to make a checkbox large? So far, the sources i've read said that it's nearly
impossible.I've tried Cssclasses and it didn't work either. I don't want to cheat and use a TextBox.How can I make the checkboxes larger?
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Mar 26, 2010
I know my question reads a bit like that 'how much wood can a woodchuck chuck' line, excuse that... I have a repeater with checkboxes. There are numerous rows in this repeater - I never know how many - I want only one checkbox checked at any time. If the user changes the checked checkbox, any pre-existing checks are unchecked therefore maintaining a single checked checkbox.
I am using VB, but comfortable to port any C#. I want to use JQuery. I have been looking on Google, but only ever seem to find ALL checked, ALL unchecked systems.
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Feb 18, 2011
I am trying to use a checkbox that is dynamically declared in an .vb file that I am trying to write into my .aspx page. I am able to write a normal checkbox of <input type='checkbox /> from the .vb Class using Response.write, but it comes up blank when using <asp:Checkbox runat='server' />I need to pass whether or not the box is checked back to the server, because I am having to either approve something if one is checked, reject something if the other is checked or do nothing if neither are checked.
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Mar 7, 2012
I have several checkboxes in a groupbox on a vb 2008 express userform. I would like to check the checked status of each when clicking a command button and then write the checkboxes caption to be used in an email or print out. I've tried several methods and always end up with the same error "Invalid Cast Exception". I have read the help on msdn and still do not understand how to make it work. Here is the code I've been trying
Dim chk As CheckBox
Dim sb As New System.Text.StringBuilder
Dim names As String
For Each chk In gbInterior.Controls
[code]....
I have also tried the code below but cannot figure out how to check the status and print the checkbox caption.
Dim ctl As Control
For Each ctl In gbInterior.Controls
If TypeOf ctl Is CheckBox Then
[code]....
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Jan 22, 2012
I have a GridView with a Checkbox on the first column: Code: The thing is that the Checkbox.Checked always returns False. How can I get the checked state of the Checkboxes in this scenario? Or what would be the best approach into updating the aforementioned column? P.S. Note that click on the checkboxes doesn't post back. Nothing happens on the page until the user clicks Save (and that is the intended behavior).
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Dec 9, 2010
How to count the total no. of asp.net checkboxes, checkboxes checked, no. of checkboxes remain unchecked in webform using vb.net ?I m using Visual studio 2008 with vb as a language ..I my webform i have 10 checkboxes...i wanna count total no. of checkboxes in webform in textboxes1 total no. of checkboxes checked in webform in textbox2 total no. of checkboxes remain unchecked in webform in textbox3?
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Mar 4, 2011
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
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Aug 30, 2009
my web browser is my main form and it has a number of sub forms , how can i set it that when i close the main form my sub forms dont close ?
At the moment when i close the main form all the forms close
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Mar 2, 2009
I have a situation where me.close() doesn't close the form. I have a form with a button with the code seen below. What happens when the button is clicked is the new form shows, but the original form(calling form) is still there. When I go into debug mode, I can see the me.close() execute, but nothing happens (calling form stays open). When I close the second form both forms close. If I comment out the call for the second form to open the first form closes without problem.
Private Sub cmdNext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdNext.Click
Dim f As New frmOrder3
[Code].....
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Nov 29, 2009
It seems like whenever i click my close button the application will close but the debugger is still in active.How to exit this debugger? :)
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Jan 1, 2010
I have the following code which closes a child form which is named "frmJobheader"[code].
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Apr 29, 2009
findwindowEX Send Message in Child of a Child of an ApplicationFirst:- my english is very ad (german)- i am a newby of Visual BasicMy Form with SQL-Integration is sending Data per Button to Notepad sucessfull. Unfortunately, the purpose application has interlocking children.But the application don become the data. to found a solution / or a Idear. i think i put in screenshots an my
Public Class Form1
'Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
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Feb 12, 2011
sometimes, when I use Form.close() when debugging my program, although the form is closed, the application is still running. I noticed this behaviour when using the msgbox function.
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Aug 30, 2009
how to use windows calculator in vb.net 2008?
use System.Diagnostic.Process.Start(calc)
its working but i want when application close it also close this calculator how?
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Jan 28, 2011
How to show asp.net validation on button click event if i have 200 checkboxes and some of the checkboxes would be disabled and some are unchecked ... if user doesn't check any of the checkbox then asp.net validation control will display and user will be stay at the same page until they check any of the unchecked checkbox ..
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Oct 7, 2009
Within my program, I have identified a process via System.Diagnostics.Processand.GetProcesses. Now I need to close one and only one of its windows whose window title i know. How do I do that?
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May 31, 2011
I just starting to use MDI form. I can show the child MDI form, without any problem. My problem is that I want to close the child form also from the parent menu bar. This is my code:
Private Sub CloseToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CloseToolStripMenuItem.Click
Dim frmActive As Form = Me.ActivateMdiChild
[code].....
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