Forms Freezing On .show()
Mar 6, 2012
I have an application that does not load a main form. My start up object is Sub Main. I am not using the application framework. I have several classes that handle different parts of the program.
objAlerts is the main one being used for this issue I am having.
This is how they are referenced in the main program class.
CODE:
This is the unfinished objAlert
CODE:
My issue is that the windows (alert.Show) open in a frozen state where the mouse pointer displays the hoursglass and the window does not respond. The windows show in the list of objects no problem.
Is there a special way that I should be opening these? I can open windows on the main class no problem.
I read that <form>.invoke(alert) might work, but there is no invoke on the main class according to VB.
I am thinking this might be a threading issue, but I don't know how to fix it because this is the first program that I have made using a Sub Main instead of a form.
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Jul 30, 2011
I'm a VB.Net newbie, and would like to write a small app that runs a While loop to check a DNS domain name, and exits once the domain has been registered.
I found code at How to Get Host Name and IP Address in VB.Net - .Net Articles & Samples to resolve the hostname and handle the "No such host is known" error if it still hasn't been registered, but I have a couple of issues:
1. How to make sure the GUI is correctly displayed even though there's an endless While loop? Should I use some kind of asynchronous call so that the window doesn't freeze?
2. I'd like the app to mimize to the icon bar, and have its window title display some status information ("Still waiting/Registered!") so that I can simply move the mouse over it and know whether the domain has finally been registered or not.
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Aug 21, 2010
Is there a way to stop or minimize forms and dialogue boxes from freezing? they seem to take up a lot of memory when loading to the point that they some times look transparent for a few seconds.
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Feb 9, 2011
I have a windows form which to summarize lets the user open a file containing 32 bit hashes, then search for one of them. The hash is then converted to its string representation. The application is giving the results I would expect but I'd like to make it execute faster than it does now; some files can be pretty big > 100 MB.
I'm doing the file read using a BackgroundWorker object to display progress updates and ensure that the UI is available during the process. But for that i need to add a System.Threading.Sleep(1) instruction in the loop; otherwise the application freezes with big files. And System.Threading.Sleep(1) creates a noticeable lag. Any suggestions on how to make searches fast without freezing the UI? Getting speeds comparable to hex editor programs for example.
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Mar 29, 2009
I'm kind of a newbie in the vb.net world, and I'm experience a strange problem with the toolstrip and showDialog(). I'm developing a aplication that interact with a .COM device, and when it receives a specific signal, a new window pops up.
[Code]...
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Jun 11, 2011
I have 1 form with the progress bar and 4 buttons with the following code.I would like to create another form that shows the same progress bar with the same progress.Here's my code for progress bar....form load code is:[code]....
how do i get that progress bar to be show in another form?
If form2.ProgressBar1.Value < 100 Then
ProgressBar1.Value += 20
End If
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Dec 11, 2011
I have a main form, and an options form that opens and closes when the "options" button is clicked. If the main form is closed then the options form closes also.I would like it that if the options form is open and the main form is shown / made visible / brought to front / gains focus / selected / etc., then the options form is also shown (i can see it).
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Aug 3, 2011
I have a class that inherits the UserControl class, the class creates its own graphics such as a title bar and what not. Is it possible to show this class as a form/it's own window?
Public Class CustomForm
Inherits System.Windows.Forms.UserControl
'create new instance, assign/declare vars here, blah blah
[Code]....
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Oct 12, 2010
after logging in i want to see example:
Username: [Username]
Department: [Department]
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May 6, 2010
I've a really nice fullscreen code I found on the internet, the only problem I found was that you can't make msgbox show or open another form! Which is really bothering me making panels.visible = true/false to make a cheap way of "Forms"orm1.
Private Sub TryToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Call normalScreen()
[code].....
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Feb 11, 2011
I have 1 form with the progress bar and 4 buttons with the following code. I would like to create another form that shows the same progress bar with the same progress. [Code]
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Sep 27, 2010
I want to show some forms but I want them to appear on specific locations . The problem is I don't know how to specify the coordinates . Using :
frm.Location = "0,0"
or
frm.Location = (0,0)
tell what is the correct syntax ?
And more thing : when a form is maximized or minimized , it looks like "flying" upwards or downwards . Is it possible to stop that visual efect ?
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Feb 25, 2009
I'm trying to use a loading overlay on top of a Windows form that adds a 50% opaque layer on top of a windows form with a loading GIF, while it does what it needs to do in a background thread. The overlay is a windows form that I'm drawing in the onPaint event.
The loading overlay works fine on multiple different form loads, but fails to work properly when summoned to ensure patience during a 30 second upload process (That Prints a Word Document to PDF, then uploads that PDF to a SQL Server). This upload collects some data from the form, puts it into an Object, then operates entirely on a background thread. The loading overlay will appear, show the first frame loading GIF, then just freeze. The onPaint is getting fired and the image frame is being updated, but it isn't visible
Constructor sets the form to be UserPainted:
Sub New()
InitializeComponent()
SetStyle(ControlStyles.UserPaint Or ControlStyles.Opaque, True)
End Sub
[Code].....
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May 25, 2010
I have a FileSystemWatcher monitoring a folder, and when many files are cut and pasted into the folder, the GUI freezes, as the 'Changed' event is fired over and over. Any way to deal with this?
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May 20, 2011
My program keeps freezing. Here is my [code]...
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Jun 10, 2010
The application is freezing on SetWindowsPos,
Sub AOnTop(frmID As Form, OnTop As Long)[code]...
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Oct 21, 2009
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
The end result is baffling me here are 2 examples when I debug
Mine: 640.1 * 49 = 31364.9
Debugger: 640.1 * 49 = 31360 ( not right needs to show the correct decimal )
Mine: .775 * 3 = 2.325
Debugger: .775 * 3 = 2.325 ( shows it perfectly???)
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Feb 28, 2011
I teach VB in college, using the Express edition. I was doing an exercise with my class today using the MessageBox.Show() method in a Windows Forms application. But when I tried entering it in the edit window, it gave me the following error message: 'show' is not a member of 'MessageBox' and it did not show up in the Intellisense box. Most of my students' computers did work with that method, but one or two of them didn't. Meanwhile, I had to revert to the MsgBox() function to get through the exercise.
[Code]...
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Mar 3, 2010
using System;
using System.Collections.Generic;
using System.ComponentModel;
[Code].....
So what I am trying to do is to get textBox1 to show which button i have clicked. Because I have Form_Activated I only see changes when i reactivate the Form. So I would like to have Event that is Active all the time and listens to everything that happens in Application and NOT only when something is clicked or some text have changed.
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May 24, 2011
I have a form that it do some calculations on datas,I create another form (for example progressform) that has a progressbar and a label with text:"Please Wait. I use progressform.SHOW() in first line of my analysis form load event, but when I run the project the progress form loads incompletely and you can not see the label and progressbar in the form! if I add a messagebox.SHOW("anything") after the line progressform.SHOW() the problem will solve and the label and progressbar apear in the form. it seems that before the progressform loads completely the computer starts the analysis...
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May 8, 2011
but I am trying out VB.net and is trying to make a program to show the ascii code for every key press I made.. here is the coding i used..
Private Sub TextBox1_KeyDown(ByVal sender As Object, ByVal e As _ System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
TextBox2.Text = e.KeyValue
End Sub
this one seems to work fine, but I noticed that regardless of whether I use "A" or "a", the ascii code shown is always 65. last i checked small letters have their own ascii code, so "a" should show a ascii of 97, not 65..
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Jan 19, 2010
I have a access database connected to a project in Visual Basic Express 2008.This is a database for items I have.I my database, when I change reccord from one item to another, I try to have a picturebox to display acutal picture for the item.
Dim NKnr As ????
If NKnr = txtNKnr Then
picFrimerke.Image = System.Drawing.Image.FromFile("C:Program FilesFrimBas
knrpic"txtNKnr".jpg")
the value in "txtNKnr" referer to a picture with the same name in given folder.
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Jan 12, 2010
i wanna create an app which can take information and make notepad file of that data. Users can make any number of notepad files they want. The prbolem: i want to show all the users files in combo box whic i did it. but i don't know how to make that file show when user clicks on that name . here is the code of mine.
[Code]...
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Feb 23, 2009
i have uploaded 3 pics shows 3 diff forms.
1. BaseForm.( Includes 2 button, Buttons Text "Form1" and "Form2")
2. Form1. (Just inherited BaseForm)
3. Form2. (Just inherited BaseForm)
If the Button Form1 clicked then it shows Form1 disable Form1 button. and Hide BaseForm. same action for Button Form1.
When I click the Right Top Cross button then the Background BaseForm Still running. I want to close all form If I click cross.
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May 26, 2009
im working on a little project and i need my form1 to basically spam itself in random locations...
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Feb 2, 2009
i'm having issues trying to show listbox items into a text box. I have a list box item, when any of these items are selected from the collection (using VS.NET) i need that item to be shown in a text box.
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Feb 16, 2011
I would like to show a sandglass or something while user waits for a process (parsing a text file).
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Feb 16, 2011
how to show the current time in a label that ticks the time moves the same time as the system time as simple as possible
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Mar 1, 2010
I have this flexgrid which shows a different tooltip for every cell it contains. Now I would like to see this exact same tooltip for every cell when I put the flexgrid on enabled = false but I can't find a way to do this.
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Mar 4, 2009
I have a procedure that download a file in a background worker how can i show a tooltip in a notifyicon when the background worker have finished the work ?
Can i implement also a progressbar from the backgroundworker ?
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