How do I display a "processing, please wait" screen as a modal form in .NET while allowing the program to continue processing what it is doing?I want to display the screen with a progress bar and so user know the status of the process yet have the option to cancel the process.
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BTW this issue occurs in any MS office program when the VB.Net (or even VBA) is processing information.Example: In Excel, a worksheet is displayed on the screen. I start either, a VB.Net or VBA procedure and within 30 seconds the Excel worksheet (previously displayed) blanks out. In both VB.Net and VBA,ScreenUpdating = False. My expectation is that the previously displayed screen would stay static as if I left my desk to get a cup of coffee; came back and the same ole Excel worksheet was still there?Of course, setting VBA Screen Updating = False accomplishes two goals: 1) speeds up processing and 2) saves the user from seeing unnecessary "garbage-processing" steps.Why does VBA or VB.Net ScreenUpdating = False not freeze the screen at the time of its invoking?
View 11 RepliesMy program is supposed to display a randomly generated sentence on the screen (something like a screensaver) Then 'wait' for a random period between 1 and 5 minutes before cycling through to generate another sentence. How do I do that?
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I am using the FilesystemWatcher to look for files in a Directory, it does not matter what the file is. After a file appears it starts my ftp process and I end up with a bunch of 0 byte files because it processed before all the files arrived.
I would like to WaitFor... (Files_Created) to finish but dont seem to have the right syntax to get this to work properly. I have working code up until it loops. As you can see I have tried various processes to get it to work... mostly commented out. I also have imported just about everything trying to get this to work. Please ask away.
Imports System Imports System.IO.File Imports System.IO Imports System.Threading Imports System.Collections Imports System.Collections.Specialized Imports System.Diagnostics Public Class FileSystemMonitor Public Shared Sub Main() Dim fsw As New FileSystemWatcher() ' create an object of FileSystemWatcher ' set properties of FileSystemWatcher object
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How can I set the curosr to 'cursor.wait' for the whole display screen and not just for the application form? I have tried "Windows.Forms.Cursor.Current = Cursors.WaitCursor" And several variations but without success.
View 5 RepliesI am using Visual Basic 2008 to create some databases. It reads data from textfiles and puts them in SQL databases. After the user presses the Process button I would like to give the user to get some feedback of the process simply by for example label1.text += "Processing File 2".But during the process no Screen Updates are made...only after all databases are processed and VB.net is waiting for new user response it updates my label1.text
View 4 RepliesI designed a application on vb.net 2005. Some of the forms in this application has databindings controls. Now when such forms loads it takes some time. I want a splash screen containg "Please wait" message to appear till the form loads and the wait splash screen would be shown for every several forms in the application not only before the start up form.
View 1 RepliesRunning into a situation when user searches for orders of customer for past 4 years. As the DB query takes a long time, I want to show a pop up box just stating 'please wait. quering for results'. so when they start their search I want to show the message box until the results are obtainned and at that point I want to close the message box.My current way, I know is incorrect as the pop up box locks up and states (not responding).Would using a background worker be an over kill, or should I go with a progress bar?
View 1 RepliesI created form2 in which there was a Label to display processing status text. In form1 right before serial port ran I used Form2.Show() and Form2.TopMost = True to display processing status. However only blank Form2 was displayed without any text inside, which means the Label in Form2 was not running. But after serial operation was done, the text in form2 came up, at which time I need to close it.
View 2 RepliesI just learned some basics of multi threading in VB.net recently as I came across processing a large List of records and inserting them into SQL database one by one.
I have code look like this:
Private Sub btnLoadNow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoadNow.Click
Dim autoLoad1 As New Thread(AddressOf AutoLoad)
autoLoad1.Start()
[CODE]...
Itemlists is a global lists i retrieved from database, everything looks fine to me but when i run this program, I found that the threads are inserting one records 9 times into the database(I have 9 threads in total), which makes me think that maybe i need to specifically assign 1/9 of a list to each thread? Is there another way to do it which doesn't require the splitting of the list, if not , how do i split it then assign?
2008 Array Processing and Sequential File Processing
View 14 RepliesIm a college student and this is my first programming class, i am having extremely diffcult time with arrays and sequential file processing. Im not asking for the whole program, just something to get me started and hints along as i progress with it. Please help me get started on my program, its due in 2 days.
Here are the requirements....
1. The program must input any number of individual�s last and first names using two separate textboxes.
2. The array of names must be sorted by the last name using a bubble sort. You must code the sort.
3. The program must be able to recall the names from the file and add to the existing list of names so that more names can be added to, sorted, and written back to the file in sorted order.
4. Sort in ascending order: A to Z
5. All names must be displayed in a listbox in sorted order when the user wishes to see them.
6. In the listbox the last and first names must be separated by a comma and a space. Example: Smith, Mary
7. The user must be able to search for a name in the array, using the binary search algorithm. You must code the search.
8. Do not use module-level variables. Instead you may choose to use Static.
9. The program must be designed using Visual Basic 2008
Im trying to make a custom splash screen , but i cant seem to get it to work. Im trying to display a welcome screen for 3 seconds then close and display form1 (main form).Heres my current code.
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I have a slight issue on my program. I have everything in working order except for displaying "You Win!" or "Try Again!" after all text boxes have been hovered. Currently it displays the answer on the first hover because all boxes are already populated with random numbers from an Array and it knows the answer. I want the label to display at the end of the game on the last hover event.
Public Class Form1
'Declare variables we want to use on more than one sub or function.
Private randObj As New Random(1)
Private LottoArray(5) As Integer
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I have the following
Public Class Form1
Private GIFAnim As Image = Image.FromFile("c:cointosscointoss_ani.gif")
Private frames As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[CODE]...
Now I would like to put a wait in after the line:
frames = GIFAnim.GetFrameCount(Imaging.FrameDimension.Time)
ImageAnimator.Animate(GIFAnim, AddressOf paintFrame)
This is so that the animation has time to play and stop and then the rest of the code will display the other picture and the numbers. Is this possible? I tried timer and sleep but I cant get them to work.
While navigating to a series of sites at one site the WebBrowser control's DocumentCompleted EVENT is tripped and no other recorded Browser events occur after that. When this happens the hour glass cursor indicates the browser is waiting. From this point it take 120 to 250 seconds of wall clock time before the browser resumes. I am looking for a way to force an abnormal termination without destroying the control. I have tried "Stop", "nav to about:blank" repeatedly without success. How can I force an abnormal termination when the Cntrl is in a wait state?
Consider the following: The last known Browser event to be tripped is a Document Complete event; nothing else occurs after this. When this transpires the Cntrl is waiting.
1:50:657: ============================= ENTER WebBrowser1_DocumentCompleted EVENT ========================================
31:50:657: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^THE NEW WEBBROWSER STATEMENT
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Is there any way we can display welcome screen with vb.net?
View 7 RepliesIn the application i am developing is there a way i can see tha values of certain variables?[code]...
if i do: messagebox.show(varRequest1.ContentLength) it print numerically the value, but i really need to see what the cookie contains to see where i'm going wrong kinda thing i have tried .tostring but i get an error
How do I get a VB program to display a character to the screen after clicking a button and then once the character has been pressed for the character to dissapear from the screen?
View 15 RepliesI propose to start a project which will take image files from a folder selected by the user, and display them as large as the screen will allow. I shall start with images that will be in the form 'filename.jgp'.I reckon I'll be able to do most of the coding without too much trouble but before I begin I'd like to know that there is a way of discovering the x and y pixel sizes of a .jpg file so that I when expand, or reduce it I will be able to keep the image in the correct aspect ratio.I'd also like to know if there is a way to rotate an image through 90 either clockwise or anticlockwise, (counterclockwise) for those cases where an image is stored sideways due to the difference between taking photographs either in landscape or portrait mode, or even through 180 I guess for if the camera was totally inverted.
View 4 RepliesI am working on a project where I have a signature displayed on the screen that is drawn via code based on data that has been transmitted from another device. This is from one of the samples from MS. The signature displays on screen just fine but I need to convert this to a bmp or jpg so I can save it to disk and/or print it on a report.
Code:
PrivateSub DrawSignature(ByVal g As Graphics)
' background
g.Clear(Color.Cornsilk)
' border
g.DrawRectangle(Pens.Gray, 0, 0, pictSignature.Width - 1, pictSignature.Height - 1)
' return if don't have a signature
[Code] .....
I have tried creating a new bitmap from the image property of pictSignature but it is empty even though it has an image displayed on screen. This is the first time I have tried to work with this type of coding and am totally at a loss as to what I need to do to get a bitmap from the data.
i made a class which has speed,symbol (string "*") and location what is the acceptable way to actually display the class symbol property on the screen ?the class will be stored in a list<OF T> and will contains hundreds dynamically instances
View 6 RepliesThis is the current code I have so far[code]...
Currently the program starts by displaying a character to screen, but I would like it to first wait 5 seconds before displaying the first character.
Then the character should not change until the user presses the corresponding character, upon which after a further 5 seconds a new character appears.
I'm writing a small app which I want to display a splash screen. The problem is my form 1 is appearing before the splash screen disappears. In fact is appears on startup blocking the splash screen. I have some code in form_load and have managed to figure out which line is causing the error, but I cant figure out why or how to prevent it.
The line reads
LoadSettings()
If I comment out this line everything runs fine and there's nothing in that sub that should affect form1. I'm doing this in vb express 2010.
Here's the code for my form_load:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
LoadSettings() ' this line is causing the problem
My.Application.MinimumSplashScreenDisplayTime = intSSDelay * 1000
'resolution check
[Code] .....
I've a form set to size 1240:750. On my PC where I've VB2010 installed, the screen size is set to 1680:1024 and the form can be viewed fine but on a PC with screen size set to 1280:1024 (higher than the form) the form in question is cropped almost a third of it. To adjust the form to everyone screen size I set the below code at load with no avail.
'Autosize form to screen
Me.Height = (SystemInformation.PrimaryMonitorSize.Height) * (0.9)
Me.Width = (SystemInformation.PrimaryMonitorSize.Width) '* (0.9)
Me.MaximumSize = New System.Drawing.Size(Me.Width, Me.Height)
Me.MinimumSize = New System.Drawing.Size(1240, 750)
I created a bitmap, that is supposed to be displayed on the screen, in the middle. It will have to be on top of EVERYTHING!! Even if a full screen application is running, I want it to show. My questions are: Is it possible to even display a CUSTOM MADE bitmap on the screen?
Option Strict Off
Imports System.Drawing.Drawing2D
Imports System.IO[code]....
In data base data is stored as
task line_item Amount
task1 lineitem1 amount
task2 lineitem2 amount
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I want to display a scrolling text on screen just a bit above the bottom of screen. Like news text scrolling at the bottom of screen. How can i do that using vb express?
View 4 RepliesHello.. I'm using a splash screen for the first time in an exercise. I have it set up to display the splash screen before going to the main form. I made changes to the splash screen title and copyright information. When I execute the program, the splash screen comes up but it's not displaying the information I changed. When I view the splash screen the changes are saved. It displays the project name where the application name should be.
View 18 RepliesI have an application with a SplashScreen. While loading the application, the application will check certain conditions and if the condition fails it throws a message window. I problem is when the message window is thrown it is displayed just behind the splashscreen and user is not able to see the message and unable to understand whats happening while the SplashScreen is displayed as it is till he clicks ok on the message box.
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