My c++ app (which has both managed and unmanaged dlls) loads very slow ( > 70 sec) during first time startup. After that it takes 20 sec only during startup. Why? How to make it faster always?
I tried with /Delayloading, rebase etc. It did not give much improvement. In fact after rebase it took more time. note that my app has more than 150 dlls
VB2010: All, I am using a picturebox to show the constellation of GPS satellites, that starts out OK. I have to redraw every now and then, because if a dialog box gets drawn on top of it, the data doesn't refresh after the dialog box is closed. Same with moving the Frame around the screen, I have to redraw the picturebox. (not sure why, but I can live with that) When I first start the program and received data from the receivers and plot the Constellation the refresh/redraw is very quick, (just a flicker) then after about 30 mins or so the refresh seems to redraw the picturebox slower and slower. I can see the individual satellites (fillellipse) redraw.
Also, I have moved the picturebox into a TAB-frame. Even when I switch from on Tab to another, the picturebox will not refresh automatically. I have to do a clear and then replot the information.
I am using this line of code on form load event it is working very fine but i have to problems
1. It replaces the form name and display the date and time but i want to keep both date and time and forms caption separated by some space.
2. When form loads it load the current date and time but the time does not change it should run.
What should i do please please help me code is as follows
Me.Text = Date.Now.ToLongDateString & " - " & TimeOfDay
I would like to be able to time a page load time in ASP.net (VBscript). Adding Trace="true" to the page directive is nice, but I need to actually time an event and store it in a variable.In ASP it was easy with the Timer object, but in .net I can't find anything on Google.
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Are anonymous types slower than declarative types?
For example, does
Dim score as Double = CalculateScore()
run slower than
Dim score = CalculateScore()
Why use explicit typing if it's no slower?
I have spent years writing VBA code that has got increasingly complicated. For the first time, I came across the error in VBA "Out Of String Space" when dealing with a 200MB CSV file.To overcome this I copied and pasted all the code over to VB.NET, compiled changed a few errors and ran the new code. The VB.Net takes 15mins, when VBA took 3 mins.For instance,Previously, to read the contents of the CSV file in VBA I used the code,Dim whole_str As String
Open file_path for Input As #1
whole_str = Input$(LOF(1),1)
Close #1
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I converted some code from vb6 to vb2005 that opens a recordset and populates a listbox
with about 8,000 names. It uses classic ado. The vb6 code does it in about 0.75 of a second, the first vb2005 code does it in about 5.5 seconds while the second vb2005 code does it in about 4.5 seconds. Is there any way to improve the vb2005 performance a fair bit more?
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I'm upgrading to VB2008 from VB6 and have noticed that when drawing a small diagram on the screen it is much slower. In VB6 is is drawn 'instantly' in VB2008, 34 lines, 5 arcs and 15 text items are taking 112000,000 ticks to draw- I can see it being drawn line by line. The codes contains the code to draw the diagram and some minor calculations to determine what to draw. If I just draw 4 lines directly it takes 80,000 ticks which looks 'instant'. It looks as if the calculations are slowing it down. Is there some reason for this, is there a box I have not ticked that makes it slow?
View 7 RepliesI have forms in diffrent project but in same Solution which is a dll project. I want to open (show) forms on button click event in another project. I am doing this without any problem. But it takes little time to open. I want that I could make these forms or dll files on Standby mode. I mean if I call them, they open quickly.
I m using this code:
Imports Transactions 'Transaction is my projects name from which I want to call forms
In Button Click Event
Dim FrmDrVouchers As Transaction.FrmDebitVouchers = New Transactions.FrmDebitVouchers()
FrmDrVouchers.Show()
I have been dealing with this problem for quite sometime. I am really hoping that my friends at EE will be able to give me a viable solution.
I am working on building an application that reads and stores information about documents (access databases, excel files, word documents) into a database.[code]...
I'd like to write a simple application in VB.Net using VB.Net Express 2008 (uses .Net 3.5), but it's a bit slow to start on my average computer.
1. When starting a .Net application while no other was loaded before using the same version of the framework, I guess Windows must load the whole framework from disk into RAM. Using eg. Process Explorer, how can I check if the framework is already up and running?
2. Is there a way to speed things up? Is there a way to load the framework at boot time? Pre-compile the application to avoid JIT compiling (provided it makes a difference for a small application)? Other tricks to know?
3. Out of curiosity, is Mono smaller/faster than MS.Net? I don't need more than the basic, run-of-the-mill controls.
I am using VB.Net with Access DB. Main form is a Parent MDI. Each form when open first time is slow. It takes noticible time. But, from second time it becomes very fast.
View 6 RepliesThe code below is a very simplified version of what I'm trying to write in VB2010.BuildPictureBoxes() builds a column of 40 PictureBoxes at the left of Form1,while LoadPictureBoxes() fills the boxes with a set of green bars.if there are no other controls on Form1, the code does what I expect (builds and fills boxes). On the other hand, if I add, say, a TextBox at design time, then it throws an exception:[code]I understand what the exception means, but not the reason for it. Apparently, the way that I've set up the For loop in LoadPictures doesn't differentiate between a TextBox and a PictureBox. I don't understand why, nor do I understand how to code the loop.I've searched forums and tried any number of ways to write the loop, but nothing that I've tried is free of errors. Clearly, I'm overlooking something simple. I'm not asking for code, because I don't learn anything that way. [code]
View 2 RepliesI've developed a derived form class that contains various collections of data. Corresponding to this data, I have a series of custom controls which can be linked to said data. I do this via custom UITypeEditors that convert the Custom Controls' Form into my derived Form Class Type and filling in a ListBox with the relevant data for the control in question. When the controls are serialized by the designer, it only stores the index value.
The above all works fine. However, I have found 1 bug that I am trying to work out - which is that, during Design Time, Custom Controls that are placed in sub containers (like a Tab Control) will fire their Load Event BEFORE they are placed inside of the Form. Is there a way to prevent this from happening? OR is there an event which occurs when the Controls are truly placed inside of a form (and not merely a sub container)?
EDIT: Upon Further Inspection, this problem only occurs with the Tab Control and not with other sub containers like Group Boxes, Split Panes, etc.
I am using vb.net in which I have put the background image to every form. The image size is 1024X768. When I open the form it is taking too much time to open. and screen is fluctuate.
View 1 RepliesI upgraded vb6 project to vb.net. Conversion of 3 user controls from vb6 to vb.net have done. Some converted code contains code like:
VB6.TwipsToPixelsY(LedHeight)
MyBase.Width = VB6.TwipsToPixelsX(VB6.PixelsToTwipsX(LedCol(0).Width) + 15)
The converted project takes too much time to load than previous vb6 project. What manual changes to the code should be done or is there any other option. Is it due to vb6 to vb.net conversion.
What im trying to do is load form1 and form2 at the same time.I have a setting called hideform2.So when i run both forms at the start up i want to get it so when they click on a close button and form 2 hides.I want it so when they run the application again it dosent show form2 anymore?
View 5 Replies1. Does Windows load the .Net framework at boot time? How can I check (eg. some DLL running in the background)? How much RAM does the framework use, so that I check I have enough to pre-load at boot time? Once loaded, will it stay in RAM?
2. What is the point of JIT once the application is installed on a given computer? Are there drawbacks about compiling into binary code applications that I use often on my own computer so that no time is wasted recompiling the application every time it's ran? If not, can I compile apps for which I only the .Net bytecode?
3. Is the framework downward-compatible, ie. will a 2.0 application run if I only have the 4.0 framework installed?
I'm trying to make a progressbar that shows the load time of the next form.I've tried alot of different ways to do it, but it and the speed is always the same whether the next form loads faster or slower.I'm not sure what variables to use or anything.
View 3 RepliesMy typical application has a couple of textboxes, checkbuttons, radiobuttons, and so. I always want to load the settings the user used the last time when the program starts, and also want to save the settings as the users clicks "Save settings" or closes the application. When the user attempts to save the settings, I'll have to check each of the controls for input errors (sometimes they have to have a max length, other times only caps, other times other things, there isn't a rule for them all, everytime it'll be different), and only if everything OK i'll let him save the options. If there is something wrong, no option is saved and my error-control provider will pop up a description of the input type info that should be put in that control.
I've been designing this from scratch for all my projects, but it's being a pain to do it. So I'd thought maybe now was the time to do some library to help me. I thought initially that maybe it'd be a good idea to have all the controls on my form that are going to be part of this save/load process to have an attribute associated with them, something like this [Code]
Just inherited a VB forms application that must be modified. My problem is that the controls are placed at the form at the load event. There is no controls on the form when I open the form1.vb in Solution explorer.
View 1 RepliesI created a Report in Crystal Report Designer. In this report, there is a place for image. I want to insert image in the report at runtime (not desgin-time). Because in my application, there is a pool of image files from which a user can select image.Is there any function in .NET, that can insert image(.jpg) at run time in report from file
like---: i am atteching the file in my query....Attached image(s)
What i am looking to do is to be able to save/load all the values filled into a form. For example The user has entered the
name: "Tim"
address: "123 Fake Street"
phone: ""
And then saves. When the come back and load this i want to be able to load it back exactly like that so the can continue with what they are doing. And if there are to open a different person they can continue with that one where they stopped. I want to be able to save them all at once and load them at once.
i'm making a utility in which i'm loading 100,000 records again and again, problem is that it takes much time to load records in datagridview every time.
i've used data set and data reader both but same result. if i use paging then there's will be a problem of search a record on keyup event.
I have a list of web pages that load into a CheckedListBox at run time.These pages are user selectable.
Scenario One: Single Selection.The application loads the selected web pages and parse's the content, this could take a short time, or it can take a few minutes.No problem here. I am using a BackgroundWorker to perform the parse.
Scenario Two: Multiple Selection
My query relates to a method that I can employ to deal with iteration of the CheckedListBox to process the next selected web page back on the UI.
I need to wait till the BW has finished before we can move on to the next page.I'm sure the above example is not best practice to hold up the UI's iteration of the CheckedListBox, until the current web page is processed.
I made two applications the first one calls the other. But the other application takes time to load. Even on a fast Pc. So i was thinking of adding a loading form to it. For example when the other application is done loading the loading form goes away.
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Whenever I publish my app, or when I run the exe from teh debug folder it takes a couple of seconds before the splash screen shows.However, when I run it from within VB (by pressing the "play" button) the splash screen shows immediately.
What could be the cause of this?
I have a form for which the form load event only fires one time. When the program starts. It will not fire again until I end the program and restart. I have tried .show and .showdialog, but it acts the same. I have read about form load events loosing the handles, but my code looks exactly like it should.
Here is the load event code
PrivateSub frmBilling_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) HandlesMyBase.Load
LoadClients()
LoadTherapists()
LoadCPT() EndSub
Here is the code that calles the form.
PrivateSub BillingToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BillingToolStripMenuItem.ClickfrmBilling.Show()
frmbilling.show()
EndSub
I have 4k records in access database. And one of the field value contains ~100 lines each so and one other field has ~25 lines. So total database size reaches ~30MB and it takes lot of time 15-20 seconds to load the database in vb.net using odbc [URL]..and updating of any other small fields also takes time due to database being large
So as an alternative I used rtf file (txt files were not preserving all the newline characters). So these file are around 5-10kb only. But for 4k records and 2 fields I have now 8k files. And copying of these 8k rtf files is taking huge time for 5MB transfer it takes an hour or so.So is there any other alternative for storage of this data. So that it will be portable and easily loaded/accessed/updated from vb.net?
I need to make a console application that will measure HTTP page load time.
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