Data Not Showing In Window Forms App
Oct 1, 2010
I am just learning vb.net using vs 2008. I have a small forms app which I have conected to a small, single table 2 column database. I enter some numbers into a text box, press a button and the data gets entered into the dbase. However the only data that gets displayed in the data table I have on my form is the existing data.No new data entered is shown until I close down and restart the app. I have tried many times using statements such as [code]...
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Mar 25, 2009
My Front end is VB.net 2008.I have a form. In this form, I have a menu control, this menu control has four buttons.On clicking the first three buttons, open the window with Show() event. and the fourth button open the screen with ShowDialog().Now, One by one I am clicking the button , so finally i have now four windows of this application.(Three with Show() and one with ShowDialog())Right?
Now I am minimizing all the windows with the help of Window + D Button.After this, If I use the keyboard(Alt+ Tab) keys. This is opening the showDialog window on top because , Show dialog's TopMost = True.Now I come back to my problem. That's why I cannot use the show/Showdialog overloaded menthod to pass the Me/form-id .Again, I use the keyboard(Alt+ Tab) keys, to minimized all windows. In the taskbar and Startmenu properties ,I have selected the Group Similar Taskbar buttons.This resulted in the heap of my application windows, one on the other.Now i click on one of my application window , and If I click the window other then the Show Dialog opened Window, this is not bringing the show dialog window to topMost.
Note:- There is no parent child window requirement. That's why I can't use the Show/Show Dialog overloaded method to pass the Me/Form-id
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Oct 21, 2009
I have to make some automatization on a web server, I use Visual Studio 2005 Visual Basic Windows Console Application. I want to make a load/performance test of the web server, so I open several Internet Explorer instances, and I login the application, that is not a problem. But after that I have a mess on the page and I cannot make any more automatization...The composition of the page after the login is like this: I have the default form, another form and a multiple data window(mdw) controller, which dinamically can switches the forms on this part.
The problem is that I don't know how to access the controls of this mdw forms. I couldn't find much about this mdw controller and I am not an expert.
My code is here:
Imports System
Imports System.Diagnostics
Imports System.Web.Ui.Webcontrols
[Code].....
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Jul 20, 2011
I am looking to call plink from a vb.net application in the background (without showing the black plink cmd screen) is it possible?
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Oct 11, 2009
I was just googleing this, and i came across this
Dim p As New System.Diagnostics.Process
p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
p.StartInfo.CreateNoWindow = True
p.StartInfo.UseShellExecute = True
p.StartInfo.FileName = "cmd.exe"
p.Start()
Does that mean that i could show it again? if so, is there a code that can do this?Also, if i wanted to get the window that the user is currently in, how would i be able to hide that?
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Jun 7, 2010
I have a form (f1) and a popup form(p1). On f1, when I click on a button, I call p1 like such:
Dim spp As New p1
spp.ShowDialog()
and in p1, I have a progress indicator that shows a long running process. The problem is that p1 doesn't show. I tried invalidate, update, refresh, doevents, etc. (both in f1 as well as p1). Nothing. p1 just doesn't show.
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May 20, 2011
I have 2 desktop programms..I will call them P1 and P2.So, P1 launches P2 as a process. However, at some point I want to be able to show a window in P2. My problem was that this window, when called, was showing correctly placed, in the middle of the screen, but in the back of P1.So, in order to show it as the top most window, above all others applications running on my computer, I used the windows API:
Const HWND_TOPMOST = -1
Const HWND_NOTOPMOST = -2
Const SWP_NOSIZE = &H1[code]...
Now the window shows on top of all other, but it is placed in the top left corner of the screen, resized to much small dimentions, that I cannot even see the controls on it.
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Jun 10, 2011
Iam using vb 2005,sqlserver 2005,vb.net web application in my datagrid properties window not showing the rowcommand. I need create row command/.
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Jul 5, 2011
I am trying to show a message box when an error occurs in a modal dialog window but for some reason the message box is never shown although I know the MessageBox.Show method is being hit. The try catch block is inside of an event handler for a windows form that is being shown as a modal dialog. I know that the event is being fired and that the error is being caught but the message box never opens. I've replaced the MessageBox.Show with another form show and it works fine but I'd rather use MessageBox instead of creating my own error form. I just can't seem to make MessageBox work. Is this a limitation of MessageBox? Here is a simplified version of what I am doing:
[Code]...
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Mar 16, 2009
I made the awful mistake of using a module instead of a class. Now, I have a control, (who inherit from a web browser), hidden under a modal form. And I need to show his content (and being it clickable) to the user, but it is hidden, and I don't want to mess with the Showmodal of the hinder form. Until I modify my code, so I can do multiple instances of my browser, I need to show that control to the user on a third form. I think that I can temporary change the .parent property of the browser, so a third modal form shows it.
But I fear that I possibly made the browser control hard coded as working in the bottom hidden form, so If I change his parent, I may broke some logic. Is there a way to show the control on a third form, without changing his parent? (and still have it clickable). I know I are asking for trouble. It is only a short term solution until I move all my module into an instantiate able class. (And I remember had being advised to work ever with classes instead of modules. Now I learn the lesson the hard way).
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Feb 15, 2009
I have in a console application. I need the program to show a OpenFileDialog window when certain text is entered, such as "file". I've tried doing this and I cannot get it to work.
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Jan 22, 2010
How can i start The command prompt (cmd.exe) without the window showing or in the taskbar, like "hidden" and pass a parameter onto it.
NOTE: I esnt to know this for a completly LEDGIT reason.
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Jan 17, 2011
I am showing a Visual Studio toolwindow in this way. It worked some time ago, but now it doesn't work anymore.
[Code]...
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Feb 21, 2012
How can i stop it from showing external cmd window.this is my code
HTML
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim mac As New Process
[code]....
it calls a vbs script i wrote which was converted to 1.exe file.when i press the button it calls it and send keysin external window i don't want this external cmd window to show was trying to get this command to work with fail?
.UseShellExecute = False
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Mar 11, 2010
I use the binding navigator in my application, but when the resolution of the display gets to small and I have to use the scrollbars I get a problem. the scrollbars automatically scrolls down below the navigator bar instead of showing it when the window loads.
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May 16, 2011
I am currently working on a launcher, and it must consist of the following:
- one main routine being called, NO WINDOW may be created at any times after or before this main routine.
- one small form called by the main routine if a certain command was sent through the Command (shortcut).
At this point I use a Windows Form, but it seems a little useless to create and initialize a form if you won't even use it. Any way to make a routine run when my program starts without showing any window? But still make it possible to show that small dialog?
I did this at first but it seems a bit dangerous:
'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Main()
End Sub
Sub Main()
'Code to run here
End Sub
It starts another program (process) which has a GUI, so I do not want to display a console window.
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Jan 2, 2010
I have built an application where there is a MDI parent form and other forms which i have not declared as Child forms but have set these forms not to show in Taskbar. While the application is running, if i have any of these forms open and i switch over to any other application other than this and when i come back to it, all these forms hide. I cannot reopen it or see it anymore.. Why is this happening?? how can i sustain these forms as it is even when i leave the application.LuxCoder
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Feb 23, 2012
I have added a MDI parent to my application and assigned all new forms to it (i.e. Form1.MDIparent = myMDI). When i hide and then show a form, it loses all of the data previously typed in the textboxes.
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Aug 18, 2010
I have the following code in my project:
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String
[Code]....
I'm needing to do is to show in my messagebox.show the date from the sql query that I ran before this. I know that I havent declared a variable in that statement but I'm having a bit of a lapse today and was just wondering how to show that result in my messagebox.show.
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May 4, 2010
When my login screen loads, if the user has not created an account the form will close and a form to create an account will appear. However when I code this both forms stay visible, instead of just the one. Where am I going wrong?[code...]
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Mar 11, 2009
I've just upgraded from Visual Basic 6 to Visual Basic 2008 Express Edition.
1. Show anothor form (ie. Form2)
2. Close Form1.
At present when I use the me.form1 , but both Form1 and Form2 both closes.I would like to press a button or on a timer, to show Form2, while closing Form1.
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Jun 20, 2009
my scenario is this: I have two forms and a module. Let's call one of the forms MainForm and the other SecondForm. My module is running on a seperate thread to MainForm. A sub routine is triggered in the module, and I want it to display SecondForm.
I understand that I cannot do this directly because SecondForm needs to be called from the UI thread, which is shared by MainForm. How would I go about doing this? I'm guessing that I would have to use a combination of invocation and calls to MainForm to activate SecondForm.
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Jun 30, 2011
Well I accidently double clicked both of my forms in a project and then they weren't pinned anymore so I exited them out hoping they'd be pinned aghain, but now when I open the project, no forms show up. Just blank blue wall... How can I get the forms back?
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Dec 13, 2011
I am creating a window that is a generic keypad for editing numerical values on a touchscreen. I would like to press an 'edit' button to create a copy of the keypad window/bring up a reusable version of the same window (I don't care), but pass in parameters: the old value I'm manipulating, and a title to be displayed above the number pad. I would like the user to be able to type in the new value, then press the 'done' key to submit this value and have it sent back to the main application window into my custom control that contains a text box.(I have the number pad's layout sorted out already; I'm already using a variation on it to set a global password 'access level'. It's getting the information in and out that has me scratching my head.) [code]
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Jul 26, 2011
What is the difference between the following two statements (in terms of memory management):
Dim frm as New MyForm()
frm.Show()
VS
MyForm.Show()
I am originally a C# developer, how does the second one make sense or even compile for that matter in VB.NET? (Show() is not a Shared/Static method) What is happening in the second case?
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May 6, 2009
I've been trying to get my head round a problem for days now, I want to read 'File.ini' line by line checking if specific text exists in the file and then display on a windows form weather particular settings are turned on or off.
So far this code works if "TargetText" exists but if it doenst I get an error on the code line: "If line.Contains("TargetText") Then".
[Code]...
It works if "TargetText" existin in a line in the file but if it doesnt exist I get the 'Null Reference Exception. Object reference not set to an instance of an object.' Any suggestions greatfully recieved!
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Sep 28, 2010
I have the following
[Code]...
and as you can see, I am showing users the next available date open to them is determined with the value dteReturnValue.ToShortDateString .. but what I'd like to do is show the user both the start date and the end date, which will always be +7 days from the field in my database.
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Jun 4, 2011
When I create an inherited form, after creation for some reason I cant see the form to edit in designer, I mean I cant drag and drop buttons, labels or any control to it since I just CANT see it, I have included a pic of what I see below where Form1 is the Inherited Form. What Am I doing wrong or what is happening
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Oct 2, 2010
I'm trying to show a Windows Form from a DLL file - it's added to the application's refrences But I can't call the Windows Form from the DLL, I tried to make a function that shows the form but when I try to call that function in my application it says: Reference to a non-shared member requires an object reference How can I show the form? I'm tried to use this method: (it's in the DLL's form)
Public Sub Open()
Dim Instance As Windows.Forms.Control = Me
Instance.Show()
End Sub
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Apr 27, 2009
I make a program upon sending emails to my friends using smtp. The problem is that I have confusions why my another form will not show until it is not finished sending all of the messages. I want my next form to show how many percent were finished but the problem is that my form will show only until all the emails are sent on my listbox. I put my code on the load event of the for
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