I have a form with text boxes ,masked text boxes e.t.c there is a binding (data) source MytablebindingSource). when i open the form the on form_load event i use the following code
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Form1 is a mdi container. It has a bunch of forms that can load inside of it as mdi children. If I close each open form inside the form1, and then click the red X at the top right, application exits fine.If I click the red X without closing the forms inside I get: An unhandled exception of type 'System.CannotUnloadAppDomainException' occurred in mscorlib.dll
Additional information: Error while unloading appdomain. (Exception from HRESULT: 0x80131015) However I can break from it. How do I get the application to not show that error? What must I do to fix those inside forms or close when the red x is clicked?
Dim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm
The above code is what I used in VB6 to close all forms associated with my programs before my program closed. I have been searching for information on how to make sure all forms are closed when closing a VB2008 program.
I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.
Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?
Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?
It is my goal to write a program to run a retail store. I am an intermediate Access developer, so I have a good grasp of the basics.However, I find that developing in VB 2010 is quite different.I will have forms for:
Company Information
Employee Information
Supplier Information
Customer Information
Invoices & Purchase Orders
All I really need to know at this point is the code to open and close each form.
1. I am closing the form which started the thread inside the thread. There are no errors , but Is it safe ?
2. The thread starts at click of a button . If same button is clicked again , the thread is aborted. Should the thread be made Background or foreground ? it is working either way.
my code :
Private Sub BtnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnOk.Click
m_Thread = New System.Threading.Thread(AddressOf MyFunction)
m_Thread.IsBackground = True
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In my one form I have a cancel button whcih is supposed to the form when the button is clicked. But its not closing the form. What could be possible reasons. I am using VS2008.Net3.5
The code is:
Private Sub cbCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbCancel.Click
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How will i close all the forms within my main form? Everytime I click on the menus of my main form,I'm setting my main form as MDI-Parent form and then loading a new form as it it is the child form if I'm not mistaken. I have a log-out menu, and what I want to happen is everytime I log-out all the forms within my parent form will be closed. How will I do it? Here are some of my codes.
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Iam a beginner to vb.i have a project work,related to Quotation software.i want to know how to unload all forms that are loaded on to a panel when clicking a Button.here i did some codes, in that, one error is displaying like "Collection was modified; enumeration operation may not execute." the code is given below:[code]
View 1 RepliesI am attempting to find a way to get an existing form to close and re-open (with the controls re-set). If I use a method like
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I want to do something like when click on the close button, a message box will pop up and if yes, close it else remain in the same form. But the following coding seems only consider one side while the other side is ignored.
Style = MsgBoxStyle.DefaultButton2 Or MsgBoxStyle.Question Or MsgBoxStyle.YesNo
Check = MsgBox("Do you want to quit?", Style, "Exit confirmation")
If Check = MsgBoxResult.Yes Then
Application.Exit()
End If
I would like to know if its possible to start up a second windows forms inside the parent form. Ex: A button is pressed and a new form is showed. I would like to keep that new form inside the parent form, and have it not be able to go outside the parent form.
View 2 RepliesGoing around in circles here. I have an Exit button (Barbuttonitem6) on my form and would like the FormClosing event to handle this. The code works fine for the FormClosing event but when i try to call the Formclosing event from Barbuttonitem6, it does not work (The form does not close if i choose Yes to save or No)
Public Sub BarButtonItem6_ItemClick(ByVal sender As System.Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles BarButtonItem6.ItemClick
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I am creating a VB program that has a Main class, and 4 windows forms. Each of the forms has a back and a next button to navigate trough the forms. The problem is that when I hit next (Here is the code)
Private Sub continueButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles continueButton.Click
VS 2008 Remember Textbox Text when Form reopens
I have a combobox in a form, I want to fill it with names I have stored in a database. I know I have to use the fill command, but I am not sure what code I need to use. I imagine I need to place this code in the form load event, where I wrote my code to connect to the database. Do I need to create a sql fill command, select Names From Users, then execute that command in the combo box object.
View 3 RepliesI have a form called ExsistingClient on this form is a datagridview when I double click the datatgridviewrowheader I want it to get the clientid from the datagridview and use that to open and populate a form called ClientMainForm.The datagrid is populated from table called ClientData, the form ClientMainForm will be populated from table called PaymentData. The tables have a relationship on clientid fields.On the ExsistingClient form I have this code:
Private Sub Client_DataDataGridView_RowHeaderMouseDoubleClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles Client_DataDataGridView.RowHeaderMouseDoubleClick
[code].....
I am using Visaul Basic 2008 and have 3 textboxes and 3 columns in Listview. My problem is that when I save the data from textbox to listview the data has been saved successfully but when I close the form and open it again there is no data to seen mean all the data destroyed.
The coding structure of my application is given below
PrivateSub btnSaveRecord_Click(ByVal
sender As System.Object,
ByVal e
As System.EventArgs)
Handles btnSaveRecord.ClickDim
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have a main form that displays a users score.I hide the main form when going to a child form.When that child form is closed, it will show the main form.The problem is that the datathat has been changed when going to the child form is not displayed on the main form since it has not been closed.Is there anyway around this?
View 1 RepliesBelow is a project that I am creating and with it is a listview table with name and telephone number I can add and remove contacts no problem that part is solved
What I am trying to solve the problem to is how to save that data once the form is closed and be at the same point when I close the form'[code...]
actually i'm trying to write a small program for my project's presentation. i created a form with buttons, each time i click on a button, i want a text loaded from MS word document to be displayed inside the form.
i thought about dislaying the text inside a label or textbox, but the problem is that the text doesn't preserve its state, i mean colors and fonts which are defined in the MS word document, it just displays everything in black color, small size..etc, even if i change the properties of the label in color or font, thoses changes will be applied to the whole text.
is there any control who can display the text loaded from a MS word coument with its colors and fonts which are already defined in the word document, or there any solution to do this ?
This is the code that i did to fetch data from the database and filling it to the combobox dropdown list at the form load event:
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Just a couple of things i wanna have a form that has like a little chat thing like shoutbox that post a message up on the message box and you can choice a display etc etc
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I have multiple forms within a form, typically up to 16, and I want these "inside" forms to snap all edges between eachother or the parent form edges, when a form is resized or moved, and edge comes within x pixels of any other edge.How should I approach this? What I can think of is to raise an event on the form that is moved/resized which calls a parent form handler method that loops through all the forms, check the edges and then keeps fixing (repositioning) the active form if any of its edges is close to any other form edge
View 3 RepliesI had a master form which has a MDI container.When I was load the master form, I will also display another form inside the MDI container.But I was fail to maximize the child form to fix the MDI container. The image below is my problem Untitled2.jpg. I need to expand the form above to touch the MDI container border. (Full size in the MDi container)But I was fail even I was set the child form window state to Maximized
View 3 RepliesI have the following code to close a form which is a child. The problem is that when it closes, it closes the MDI parent too.
Private Sub frmTransaction_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
If ListView1.Items.Count >= 1 Then
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I have googled high and low to find an answer to this but I must be searching wrong.I have an application which has a listview displaying some items that are stored in a SQL Compact database. I am using a second form to add new items to this list directly into the database.When the second form closes I want to call the sub in my first form to refresh the list from the database.
How can I get it to fire the form1 sub routine on the close event of form2
Im running a program with multiple forms with a menu and toolstrip defined and assigned with properties in a module. each form has the Call menuload (Me) in the form_load sub.
My problem is that these menu's have menuitems which need close the shown form and open another. a sample of one of my menuitems is:
Module MenuTemplate
Friend WithEvents frm As Form
Friend WithEvents menustrip As New MenuStrip
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I am trying to fill form located here [URL] using web browser control in MS Visual Basic 2008.
View 1 RepliesI have a problem with filling a datagrid (DGV2) in my form. The code does not do what I desire.
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Dear forummembers,I have a problem with filling a datagrid (DGV2) in my form.The code does not do what I desire.
Dim I As Integer
ItemLoc Dim As Integer = -1
For I = 0 To DGV2.Rows.Count - 1
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I created this program to automatically post reviews I have written to this website. All the code works fine until the last line. It throws this error "Object variable or With block variable not set." I can't figure it out, because it works fine before this point when i call it on other pages.
Dim email, password As String
email = "email"
password = "password"
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