VS 2008 Hiding A Control On Timing?
Dec 11, 2009Is it possible to hide some control on timer event. Initially when the page loads, i am label control on the form. So after some seconds, can i able to hide that label?
View 5 RepliesIs it possible to hide some control on timer event. Initially when the page loads, i am label control on the form. So after some seconds, can i able to hide that label?
View 5 RepliesI am using VB2008 SerialPort to communicate with a device. My problem is, using RTS handshake I am missing the first 50 or 60 chars, after that everything is intact. I tried to change the buffer size - Has no effect, used standard, bigger, smaller and no change.
The device timing says when it sends CTS signal, it will start listening 100ms after that. I have no clue how to delay the write to test this. Should I first write to the buffer then write to the port after a a 100ms timer event?
Working with a form that has a menu, toolstrip and Crystal Viewer control. I cannot seem to get the viewer to maximize properly without hiding the toolbar of the Crystal Control behind the menu and toolstrip. I've played with the options of Dock and Alignment, as well as autosize and I just can't get it to work.So do I need to handle the sizing myself to do this and position the control where I need it?
View 2 RepliesWhy does this code works for the first few then gives timeout on all the rest ? VB removed, resolved like when i run it with say 50 threads, the first few work fine but then the rest after that all time out, i have tryed moving the ones that work to the bottom of the list but they still timeout after the first few are done.
View 2 RepliesI'm trying to measure the performance of seven sorting algorithms in a single VB 2008 program. I've tried using a Timer componend, the Stopwatch, and DateTime.Ticks but nothing works. The following simple code produces a result of about 500 (milliseconds), which is correct, but when I change 500 to 1000, I get a ridiculous result like 0 or 8.
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In a WinForms environment, I want to wait a specified amount of time before hiding a user control, but I don't want to freeze the entire UI. I can't kick off to another thread because I have to service the UI components on the thread they were created on. What is the cleanest way to do this?
View 2 RepliesI've removed the properties completely with a controlDesigner class, but I'm getting warnings + trying to do it properly to remove those warnings.
View 6 RepliesIs there any way of hiding the tab page headers without having to create a new user control?
View 2 RepliesFor example I have 10 notepad files open with all different name and I want to write simple program what will hide some of the notepads (they are all different process with different name, so thats not a problem).
View 1 RepliesI saw an application for cashier system in a certain store. I noticed that while the application was running, the window form of their application occupies the entire screen and the windows taskbar seems to be hidden. I'm just curious how did they hide the windows taskbar? Do they hide the taskbar in a manual settings on their computer before the application was launched? If not, how did they make their application capable of hiding the taskbar? Please put a detail code if applicable. I just want to know how to hide the taskbar when you launch the application and put it back when you exits the application as well.
View 4 RepliesI'm trying to search through all tabs to find a specific text. if the text is found, the tab will be hidden, or shown.
I tried this to hide:
btnHide
Dim txt As Object
Dim tabp As TabPage
For Each tabp In TabControl1.TabPages
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I saw an application for cashier system in a certain store. I noticed that while the application was running, the window form of their application occupies the entire screen and the windows taskbar seems to be hidden. I'm just curious how did they hide the windows taskbar? Do they hide the taskbar in a manual settings on their computer before the application was launched? If not, how did they make their application capable of hiding the taskbar? I just want to know how to hide the taskbar when you launch the application and put it back when you exits the application as well.
View 2 RepliesI have a form that is the main form.I don't want it to show when it loads, but when I do Me.Hide() in the Form_Load event, it flickers visible before it hides. Because before I made this form the main form, the one I was using previously didn't flicker.
View 15 RepliesI have a data grid on my form with 6 columns. 5 of the 6 are combobox fields. When just looking at the datagrid all the drop down buttons on the left really clutter up the grid. Does anyone know a way to hide the drop down button on the combo box until the time the user actually clicks in the cell. I have tried changing the style to flat which helps but I would rather it wasn't visible at all until the user is actually in the cell.
View 1 RepliesI have a (pretty large, 1000 lines or so) class with a lot of properties, both regular,overridden and overloadd properties. I currently add this in front of the property to hide it from the designer:<Browsable(False), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)>This is all great, but it adds quite some lines to my project. How can I specify, for my class or project, that it should add the above settings to all?Or even better: set the above settings for a block of code instead of a single property.
View 17 RepliesIt is times like these that I miss the old VB6 language I wish I could hide the current forn and show another form which - this is the important thing - to be on the same level that the previous form was . You see , I used to use this code :
Me.Hide Form2.Show However , sometimes in VB .NET this does not work the way I want it to . You see , the current form does get hidden and Form2 is shown indeed ; however , Form2 is shown somewhere in the background . If there are other programs opened at that time , then Form2 is shown behind all those programs , that's what I mean by saying I want it to be shown in the same level as the previous form was the only way out , I found , was to reverse the code :
Form2.Show Me.Hide In this way Form2 is successfully shown right where the previous form was shown (above the other programs) but in some cases this also is not pleasant because it might take some time for Form2 to load while at the same time the previous form is still visible on the screen and therefore for a slight time both forms are shown one over the other , which is surely not nice . That's why I still want to first hide the first form and later show Form2 .
I'm having an issue with my app where IE will get brought to the front of the screen when I am switching between forms. Basically I have a form with the man menu which consist of a few command buttons that will start up another form once a user clicks on the button. I do not want the users loading up multiple forms in my application, so once they load one form I end up hiding the main form. So my code looks as shown below when a button is clicked.
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OK, I have this loop I want to perform which involves the serial port. Not to get too specific I'm actually sending data to an external device within a loop The loop involves a Start number, increments by a Step and ends when it gets to Stop This repeats until I click a STOP button.
View 15 RepliesI have a stored procedure that when I run it within my application it times out, but when I use Management Studio and pass in the same exact parameters, the stored procedure executes under a second. I had this exact same issue with the same stored procedure before, and all I did was recompile it, and it fixed the problem, but I do not want to keep having to recompile this stored procedure every few days or so. Has anyone else ran into this issue before?
Another note I would like to mention, is that I'm currently working on a test database, so I'm not inserting, deleting or updating any of the records that the Stored Procedure is using. So the database itself is not changing, but for some reason the Stored Procedure is showing degradation, and at the most we have 2 users in the database at a time.
Below is the code I use to call the Stored Procedure from my app.
cmd.CommandText = "sp__RECAP_SELECTION_GET_GRID_RECORDS_RECAP_TYPES"
cmd.Parameters.Add("@FK_KitchenID", SqlDbType.SmallInt).Value = cmbKitchenCustomer.KitchenID_SelectedPrimaryKey
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As I mentioned, if I run the Stored Procedure within Mangement Studio, it runs with no problems. Also if I recompile the stored procedure, it runs fine within the app, but after a few days, the stored procedure starts to timeout again within the app and I need to recompile it again.
The program operates a board and activates relays when the buttons are pressed, the code works fine and i have published it to use on a PC however, after about 2 days the port times out and it stops operating the port, am i missing any code such as close port anywhere.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I use combo boxes with the Autocomplete turned on (Source = ListItems and Mode= SuggestAndApplend). The problem is that if the user stops typing for two seconds and then continues typing, the Autocomplete starts matching only on a new characters being typed. For example, I have a list with two items: "apple" and "please". I type "ap", then pause for a couple seconds and then continue typing "ple". I want the list to match on "apple" but instead it matches on "please". I'm looking for a property or some way to set the length of time the control resets the matching. Do you know if one exists?
View 6 RepliesI am a complete noob at programming, so I need all the help I can get with my new program.I am building a web-browser which is linked to one webpage. The content of this page is constantly changing, so I need the web-browser to auto-refresh after 2 minutes. But if it refreshes while NOT connected to the Internet, the browser will show an error message, so that is why I have build in an Internet check. This check is working. The browser also have to be in the same place at the screen every time the software is loaded. This code is also working.
But the timer and the refresh is bugging me. I cannot get it to work. The code is not responding.
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I need access to very precise timing in a .NET application. I need microsecond precision. Is there an easy way to do this in .NET?
View 5 RepliesIm trying to check to see if a value of a label changes over time. however I can't seem to get it right.
dim val1 as string
dim val2 as string
private sub form1_load()
dim val1 = label1.text
end sub
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problem is it will only check it once after ten seconds when the timer is set to 10 seconds i need to to check it every 10 seconds becuase these values display altitude, and if the server freezes the altitudes dont change. I need to make sure they are updated and not frozen.
I am using LINQ to SQL and a third party SDK that supports distributed transactions. When I realize that a pending update will be updating both SQL records and records in the third party SDK, I am creating a TransactionScope with a 0 (presumably infinite) timeout (although I've also tried 12 hours as a timespan parameter). Then I use GetDtcTransaction on the ambient transaction (created by transactionscope) to get a DTC transaction to link to the third party SDK. Things work nicely for about 10 minutes, but after 10 minutes, the transaction disappears and an error occurs. How do I determine why the transaction is disappearing. I suspect it's a timeout because it regularly occurs after 10 minutes even though slightly varying degrees of work have been done at that point. But I'm at a loss about how to determine what terminated the transaction, why, and how to extend its life.
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I'm currently struggling on how to make a comparison between a timespan value and the current time.I went up to here, but the comparison totaal with the current time doesn't work .
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So, I got an SSD drive for my computer the other week, and decided to have a little fun. I wrote a program which starts every single program in the Windows Programs folder in the Start Menu, via clicking the "Go" button on my Form. It works beautifully. Only thing I would like to add to it is some sort of timer, which I have never tried in any programming language. I would basically like for a timer to be running, counting in real time (seconds), until my loop ends, and then display the total time taken at the end. I was thinking about setting a variable equal to the current time, before the loop starts, and then another equal to the time right after it ends, and then taking the difference of the two.
View 7 RepliesOur production database as grown to a size where several of our longer running stored procedures are taking more than the default 30 seconds to complete. I've programatically set some of the CommandTimeouts on the command objects but the calls to the store procedures still appear to be timing out after 30 seconds.
Here's what I did:
In web.config set this property
add key="CommandTimeOut" value="180"
Added this to the top of my class that needs the timeout set:
Dim COMMAND_TIMEOUT As Integer = ConfigurationManager.AppSettings("CommandTimeOut")
After creating the command object set the timeout property on the object.
cmd.CommandTimeout = COMMAND_TIMEOUT
Unfortunately my stored procedures still seem to be timing out when they take longer than 30 seconds to execute.
I have a timer routine (basically just a timing loop) that moves shapes around the screen. The problem is that it isn't in sync with Windows (Vista). If a Windows background program runs (like an antivirus) the screen goes gray. The timing routine still runs but the display is shut off. Only when the shapes are done moving does the screen return to normal (but I didn't actually see the shapes move). Another good example of my issue is when I finish debugging and press the Start button, again I don't see the shapes move, I just see a grayed out screen with the cursor in "busy" mode.
All the other VB.NET programming I've done doesn't assume so much control as this timing loop. I've never had to worry about coordinating a routine with other windows functions. What's the trick to getting this stuff to work together smoothly?
I added a web reference to my VS 2005 console application [Code] The call to this WS times out with :"The CLR has been unable to transition from COM context 0x1a3008 to COM context 0x1a3178 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages.
This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations."
I used WCFStorm to call this WS and the result comes back in an instance, so I don't think the WS is a problem. I deleted the web reference a few times and added it back again. did the clean and rebuild operations.