VS 2010 - New Form Opens Even When Checkbox Unchecked
Nov 16, 2009
I'm trying to set my software up so that when I check the checkbox for winRAR to be installed, it'll pop up a new window asking if I want to install the 32 bit version or the 64 bit version. I have no problem getting the window to show up but than if I try to exit out of the window and than uncheck the box (in case it was accidentally checked) it'll just open the window again. I am thinking I have to tell vb that when I uncheck the box it shouldn't do anything.
Here's my code.
(I know that the Nothing under the Me.chk_rar.Checked = False doesn't work but I left that blank once and it just opened a bunch of windows and crashed my system. I know it says "E:Music" right now but I just pointed it there so that there was something there normally it'll point to the other window. If I need to created a new Form for every little window that I have for instance the little window that I want to pop up, do I need to create a new form just for that little window to ask which architecture is needed and than giving the options for 32 bit or 64 bit.
Private Sub chk_rar_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chk_rar.CheckedChanged
Me.chk_rar.Checked = True
Process.Start("E:Music")
Me.chk_rar.Checked = False
Nothing
End Sub
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Jun 30, 2009
I've got a form with parent-child setup. The parent displays name and other demographic info.The child displays multiple addresses, one row at a time. There can only be one primary address for a name and this is designated by a checkbox at the top of the child form.If the user wants to change the primary address to another address,then they find the other address and click on the checkbox.The form checks the other addresses and if one is found that is designated as primary,the user is warned that one already exists and prompts them to change it.
So for example, a name has 2 addresses, the 2nd being the primary address.The user wants to change the 1st address to be primary.They click on the Primary Address checkbox for the 1st address.A warning displays that there is already an address listed as primary.The user then answers the prompt to change the 1st address to the primary address.The checkbox for the 2nd address will be unchecked and the checkbox will be checked for the 1st address.My problem is getting the checkbox unchecked for the 2nd address.If I close the form and reopen, then the checkbox is unchecked.How do I refresh the checkbox for the 2nd address?Here is the code I'm using to find if an address has already been marked as primary:[code]......
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Mar 3, 2012
I want to create a solid checkbox that is checked by default, and is not clickable. If you click it, nothing will happen . how to do this?
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Oct 3, 2010
I have a very stubborn check box . Let me tell you its story :There is Form1 with a button leading to Form2 . On Form2 there is located that stubborn check box I was telling you about . That check box has code in its CheckedChange event and accordingly to its Checked condition , it enables or disables some text boxes .Well , the first time Form2 is shown , that check box works fine : when I check it it enambles the text boxes and when I uncheck it , it disables those text boxes .Then , I press the button to return to Form1 . If needed , the code in the button is :Form1.ShowMe.CloseMy adventure starts when I show again Form2 ... This time the check box is acting weirdly . No matter if I check it or I uncheck it , it always disables the text boxes , as if it is constantly unchecked ! I can see it changing its checked state whenever I click on it , but it always runs the code to disable the text boxes.
I even used some break points in the code and found out that indeed it is the code that disables the text boxes that is called every time , no matter if the check box is checked or unchecked .I don't thing this has anything to do with the fact that this event is called by all the 4 check boxes on the form . After all , it is always the 1st check box that causes the problem (I can see it when moving the cursor over the genericindex variable) .
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Jul 2, 2009
I am using the following code for a checkbox, if checked it should print the text defined, unchceked, it clears the items in the ricktextbox. My problem is it prints fine (lets say it prints two lines) as defined, when I uncheck, it clears the text in rich text box, but when I check again, the text appears in the richtext box, but displayed from 4th line. I need to restart from the beginning/ or at least from the next available line. I cant use clear() since it erase all the contents as i have another 3 checkbox items placed.
If CheckBox1.Checked Then
richtextbox.SelectionColor() = Color.Blue
richtextbox.AppendText("Urgent:")
richtextbox.AppendText(CheckBox1.Text.ToString + vbNewLine)
Else
richtextbox.Refresh()
End If
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Jul 12, 2010
I have a datagridview with 3 checkboxes, Yes, No and InV.At runtime, I want the user when he checks one checkbox the other two are unchecked by default. Therefore, at whatever one time ONLY one checkbox will be checked.
[Code]...
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May 14, 2012
I have a checkbox list which is filled with entries from my database on page load. I need to update an entry in my database when a item is checked and when an item is unchecked. Right now I am doing the following:
<asp:CheckBoxList id="check1" AutoPostBack="True" TextAlign="Right" OnSelectedIndexChanged="Check" runat="server">
</asp:CheckBoxList>
And the function:
Sub Check(ByVal sender As Object, ByVal e As EventArgs)
Dim sql As String
If check1.SelectedItem.Selected = True Then[code]....
The error is: "Object reference not set to an instance of an object." Is there a better way to check if a list item is checked or unchecked?
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Mar 29, 2012
I use a textbox for input unless one of the checkboxes is checked, then the textbox needs to have a value of 1 which I have working.What I need is a way to lock the textbox if the checkbox is check and allow data if it is unchecked.[code]
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Aug 17, 2010
so im dynamically populating a checkbox list. I have confirmed that my text and values are correct for each checkbox but when I check a few and click my event button when I loop through the items they are all set to select=false...
Dim resource As ListItem
Dim SelectedHashTable As New Hashtable
For Each resource In chkResources.Items
[code].....
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Jul 9, 2010
How can I make the main form grey out/translucent black when a new form opens on top?
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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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Jan 15, 2009
Whenever I want to reopen a project that I didn't worked on for several month and want to view my form in design mode I receive following error.
Warning1Method not found: 'Void System.Windows.Forms.Design.ParentControlDesigner.WndProc(System.Windows.Forms.Message ByRef)'.00
[Code]....
I used this project in VB2005 express, but also in VB2008.
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Jan 2, 2012
I have a ListView with Checkboxes in vb.net and what I want to do is when the user check the checkbox, the program ignore the response of the user in checking the checkbox, instead it leaves the checkbox uncheck.
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Jun 16, 2011
I have a form ( call it NewForm ) that can be opened from many other forms, but I don't want to have the user to run into the problem of having many windows/forms open.I want to close the calling form and open NewForm.NewForm will prompt the user for information, but if the user doesn't find what they are looking for I want to have a "Cancel" button on the form. With the "Cancel" button I want to go to the previous form.is there a way to tell which form called NewForm so I can just reopen/unhide that form/window.
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Nov 2, 2011
When I initialize a new form to open, the subroutine in the new form starts before the new form is shown on the screen and so when the subroutine finishes and the MsgBox comes up, the form isn't showing.
Is there a way to make the form pop up first before the subroutine starts?
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Jan 23, 2010
when you login it is the meaning that another form opens. But as soon as the new form opens up everything closes. The code i used is this:
Public Class Form1
Public Goldhave As Integer
Public UserName2, Password As String
[Code].....
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Feb 22, 2012
I am using VS 2008, Windows XP R3, and Visual Basic.When I open some forms in the form designer, (In Solution Explorer, right click on the form, then select View Designer) the form always opens as Edited. An Asterisk "*" appears after the form name in the open window tabs. If I open the form to just view the code (In Solution Explorer, right click on the form, then select View Code), the form opens normally. This happens for just some forms.
It always happens for the same forms, and never happens for the other forms. What I am missing in those forms where the designer always thinks the form has been edited?
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Jun 22, 2010
When opening a button and opening a new form as soon as it opens it close for some reason but its not giving any errors as to why its doing this now I've checked the linked linking it to the next form that's fine.
Private Sub PrintPerscription_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Login.con.Open()
sql = "SELECT Patient.* FROM Patient where Patient.Wardno = " & Login.WardNo.ToString
da = New OleDb.OleDbDataAdapter(sql, Login.con)
noOfRows = da.Fill(dsPatient, "Patient")
[Code] .....
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Apr 25, 2012
I am new to these forums. I had a VB.net class several years ago and cant seem to find this info in the text from the book used in the class. Here is what I would like to do. I have a 2 forms. One with three buttons and the other with a listbox. When I click on one of the three buttons (on form1), I want to fill the listbox (on form 2) with one of three arrays. is this possible, it seems like it should be.
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Nov 5, 2010
I have a form that opens a other form in multi threading but after that it wont close I have tried:
application.exit (Works but closes the whole app)
me.close (nothing happens)
end (nothing happens)
me.hide (nothing happens)
This form is form1 that wont close and opens form3 I every other form works.(7 forms total)
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Mar 19, 2010
I need to create a program that requires password entry. I was thinking of having a form that the user uses to set the password that only opens once (unless a button on the main form is clicked to reset the password.) once the password has been set, the form closes and another opens to enter the password and for each and every time the program is run. Another thing is that if the password has been entered wrong 3 times, the program gives a message box and closes on the ok button.
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Mar 16, 2010
I am trying to reference an Array when a form opens. When the code below runs I get a "Type Mismatch" error.
Dim strText0 As String
strText0 = Form_frmRVNumber.Text0.Value
Dim strRVNum() As String
[Code]....
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Mar 26, 2010
I am creating a form and I have a label that will display the user's name, but what I need to do it trigger a text box when the application opens that will allow the user to type in their name and then assign that value to the label in my form. How do I trigger the text box and assign the value to my label? My label is named lblStudent.
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Jan 15, 2012
I just want to know how to close current child form and opens another? In vb.net.
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Aug 31, 2011
I am creating a program that has many text boxes and labels on the form. I want to be able to edit fields close the program and open it up so that the form opens with the last editing I did in the fields.
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Feb 19, 2011
I have a few questions. first, how do i make it so that when you open your program you can not open ctrl+alt+del = task manager? second how do i make it so that a button opens a .bat file? third Is it possible to a button open multiple Internet Explorer Windows? When i try to do this it only opens a bunch of tabs? and lastly how do I make it so that when it installs on a computer it installs straight to the start-up folder without the user knowing it, or how do you make it so it opens automatically on start-up?
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Apr 3, 2010
I have two forms. The first one opens the second one after all fields are filled out successfully. The problem I am having is I want to close the first form when the second form is displayed, but every time I try using frmCustomer.Close() when the second page (Result) loads, it completely closes the entire application.What am I doing wrong? What is the correct way of doing this?
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Jul 21, 2009
I am using VS 2008/VB with Access 2007. I have 2 forms that I use to create entries. In the first form (fomr1) I select the type of entry which opens the respective form (form. In form1 I use some code to read through a oledbreader the id rows and get the max value in that column. I take that value and I add 1 to it and then assign the value to a textbox in form2. The whole process worked fine until today which gives me this exception "An error occurred creating the form. See exception.innerexception for details. The error is Object reference not set to an instance of an object. "
[Code]...
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May 16, 2011
I am brand new to VB. I am using VB 2010 Express. I have a MS Access database and can read & display the data. However, when I enter a line of code to manipulate the data I get a "read only" error message in the project editor. I have checked the file and directory structures from windows and the command prompt. I have even used the "attrib" command to make sure the file was not read only. Then I put the following code in the form and it dispaly the read only message.
Dim infoReader As System.IO.FileInfo
infoReader = My.Computer.FileSystem.GetFileInfo("C:zzz-devaccesswhitneywhitney.accdb")
If infoReader.IsReadOnly = True Then
MsgBox("File is readonly!")
End If
I am using the VB 2010 Express DataSource to connect to the MS Access database and not a connection string in the program.
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Aug 3, 2009
I am trying to autoselect pre-programmed items in a listbox when a form opens with the control on it.but i cannot find a proper method to select all the items in the listbox and hold the resulting text as a string that will later be saved to a text file. i do not need help with saving the text to file but rather selecting the items in the listbox.so, after alot of trial and error and no luck I think I am supposed to use
ListBox.ObjectCollection
propriety. but i have no clue whats so ever in how to manage to select all the items in the listbox when this form opens...if this does not make sence then I will rephraze it.
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