Slow IDE Performance - Esp. Selecting Image For Button?
Aug 6, 2010
while using VS 2008 SP1 for VB WinForm apps (on Win 7 Ultimate machine),I find that while the performance of VS 2008 is on the slow side, it is generally tolerable except for one thing: when selecting an image for a button, the "Select Resource" dialog will come up, and I choose "local resource", then Import. After navigating to the appropriate folder and selecting the desired image,I will almost always get the "hourglass" (now the blue whirly thing),and only after several seconds will the operation complete(i.e. the "Select Resource" dialog will show the image I selected,and then I can close it and be on my merry way). Typically while the whirly thing is going, the dialog box title will say "Select Resource (Not Responding)". Also on some occasions during the wait period, the Select Resource dialog will hide, and I will have to click the VS icon in the taskbar to make it reappear so the operation can complete.
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Aug 1, 2011
I got a Combobox with some items (item1-item7) to select and 54ish Buttons(sButton1-sButton54). Also an array(53) called Buttons. The array is filled with the items to select, like: Buttons(0) = "item 1, item 2" Everytime another item in the Combobox is selected, I'd like only some of the Buttons to change their Image. Therefore I got the array. If Item 1 is selected and Buttons(0) contains the item1 I'd like to change the Button1's image.edit: It works with changing the image of every Button:
sButton1.Image = My.Resources.image1
But I'd prefer to change all in one go (Loop) instead.
sButton(0) = "item1, item2, item3"
sButton(1) = "item2, item3"
sButton(2) = "item1, item3"
[code]....
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Apr 21, 2011
I've got a DataGridView control that is bound to a datatable. The first cell of each row in the DataGrid is a checkbox. When the screen loads all of the checkboxes are unchecked by default. I have a "Select All" button to check all of the boxes. This is performing very slowly when I have a large number of rows in the grid. If I have 1,000 rows it takes over 30 seconds for them all to be checked. When I had 5,000 rows I gave up after 5+ minutes with no result. To check all of the boxes I am looping through each row of the datatable and setting the first item to True:
[code]...
Since that yielded such slow results I changed the logic to loop through each row of the datagrid and set the cell to True but that took three times as long.
Is there a way to quickly "check all" on a large set of data?
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Mar 16, 2009
I have a program in where I need to loop though the entire dataset.datatable. I takes a long time. What is the alternative I can use to do the some job but faster?
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Jun 8, 2012
In my winform application, I have 2 datatables, both contains 37000 rows. Table 1 has 171 columns and Table 2 has 4 columns. A While loop runs to update values in Table 1 from Table 2 for 4 columns. A For loop runs inside While twice to update values. It takes more than 5 min to do so. which i think should be a task of 5 seconds.
Columns being updated are:
Int64 - 1 Columns
String - 1 Columns
[Code]....
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Apr 2, 2009
I have built an application using VB 2005 express edition with backend Ms Access 2000. In main form(which is loaded on startup), I am having 9 datagridviews, each bound with databindingsources. I am refreshing this data every 15 seconds by refilling the table adapters and updating the datagridviews.Now, this access database is shared in the network and is accessed by about 5-6 users concurrently. There are other forms which are used to edit the data.My problem is poor performance of the application. Its very slow in opening up forms, not responding sometimes and using the network resources fully.
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Dec 18, 2009
i have a datagridview which have 3 columns, two button columns increase or decrease, 3rd displays the value increased or decreased from button. i have datagridview_CellContentClik behind button columns. The problem is increase in value on pressing button is very slow. i mean if i press button quickly the value should increase quickly but its the same slow pace for increasing or decreasing value on pressing button.
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Aug 12, 2009
We have a project for a client that is written in VB.NET. In one of the projects, we have about 100 modules, which are all VERY simple. They're extension methods that convert between object types. Here is a small snippet:
Public Module ScheduleExtensions
<System.Runtime.CompilerServices.Extension()> _
Public Function ToServicesData(ByVal source As Schedule) As ScheduleServicesData
[code].....
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Apr 19, 2010
I am new to the world of VB.NET and have been tasked to put together a little program to search a directory of about 2000 Excel spreadsheets and put together a list to display based on the value of a Custom Document Property within that spreadsheet file. Given that I am far from a computer programmer by education or trade, this has been an adventure.
I've gotten it to work, the results are fine. The problem is, it takes well over a minute to run. It is being run over a LAN connection. When I run it locally (using a 'test' directory of about 300 files) it executes in about 4 seconds.I'm not sure even what to expect as a reasonable execution speed, so I thought I would ask here.The code is below, if anyone thinks changes there might be of use in speeding things up.
Private Sub listByPt()
Dim di As New IO.DirectoryInfo(dir_loc)
Dim aryFiles As IO.FileInfo() = di.GetFiles("*" & ext_to_check)[code]....
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Mar 14, 2009
I didn't think that setting a background of a form may slow it down seriously, but it's real now
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Feb 13, 2011
The background is 61KB JPG format and it really makes my game slow in VBB?? Without the background it's perfect.
Can't I use background image then?
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Jan 2, 2012
I'm currently developing a chess program. In my program, the problem I'm currently having is the slow drawing of the initial board. Here's part of my _gameGraph.DrawImage(MyResources.Marble_White, New Rectangle(x, y, 70, 70)) The code here draws the black & white squares using a for/next loop. I later use another for/next loop on the array holding the piece values, which uses the same type of function to draw the pieces on top of the squares. Both the pieces and the squares are .PNG images.
[Code]...
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Jan 15, 2010
Why does my program slow down when i add a Back Ground Image?
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Jul 15, 2009
I have a weird bug with webclient. I made an app a while ago which uses webclient to download a small thumbnail image.. and I rememeber when I first made it, the first time webclient was used to download the image it always took 15 sec+ to download it, but after the first it always downloaded quickly (in like 1 sec) .. but then the problem went away for me and it always downloaded fine.but now someone else who uses my app is having the slow image download problem apparently around 50% of the time it downloads the thumbnail images. so does anyone know what might be causing this? As I said, I don't have the problem any more on my comp - but I don't know why :s
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Dec 2, 2010
VB.NET, .NET 4
I am writing an industrial control front-end that has some "fancy" graphics to indicate the states of some machinery. For example, I indicate that some heaters are on by showing red wavy arrows emanating out from a picture of a heater. I accomplished this by creating a class that inherits from PictureBox and using a timer to advance the images:
Public Class AnimatedPictureBox
Inherits PictureBox
Private WithEvents Timer As New Timers.Timer
Public Property Interval As Double
[Code] .....
My question is "Is this an alright way to go about this or is there some obvious better way?" I'm not too good at programming and am worried that having several of these objects with their embedded timers taxing the CPU. I went with animated GIFs for some other animation stuff, but here, I wanted to be able to handle image formats that can handle a larger palette than a GIF (if that makes sense). In other words, when I tried to save some of my animations as GIFs, the image quality took an unacceptable hit.
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May 25, 2009
I have already posted this question on the "reporting services" forum and received no responses, so i thought i'd give it a try here.
SQL server 2005 SP3, VS 2005, vb.net, RV control.
When i add a background image to the page header, body and page footer, The rendering takes about one second per page. Without the background images, it renders about 25-50 pages per second. My report is a statement print report and has about 1500 pages.
Since it is the same image on each page, why does the server need to send that image over and over again to the report viewer control?
In vb.net i have the Report Viewer control and i bring up a report in normal viewing mode. when i click on the print layout mode, or have that mode set up to be the default mode, It takes forever when i have a background image and virtually no time for the same report without the images. The images are gifs about 5 or 6k each. I have chosen to embed the image into the report.
How do i optimize the usage of background images so they do not interfere with the rendering speed? Or at least minimalize the slowdown.
[EDIT:] I have discovered that if i render it to PDF and open the PDF and page through the report, it is much much faster. In other words if i choose to render to 'printlayout', it is say 25 times slower than when i render it to default, and about 20 times slower then if i render it to PDF. And the PDF contains exact rendering for all pages, exactly the same rendering as the print layout mode generates.
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Feb 4, 2010
I think it's because I have a background image. For example when I maximize the program it lags. I mean big software companies have programs that have more pixel images and are much more colorful then my program is but never lag why. AVG has nice look but the program never lag. But the code runs fine so that is a good thing. How can I stop the lag with background image?
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Jul 21, 2011
I am trying to add Images from websites and I am facing poblem with an issue which is that when I am trying to go to google images and trying to add some Images and when I right click for some images I find "Copy Image URL" and for some I don't find it and I find "Copy link address".Now I want my users to restrict from adding the Images which contain "Copy Image URL"And I am attaching Images so that you'll understand me in a better way.
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Apr 28, 2012
I am getting a disturbing message error when I dont select image from file then when I select its just ok...it just says:
The path is not of a legal form.
So my question is how can I have a choice whether I can insert image or not...if the fileopendailog opens there is query which says you must select...so may be I don't want to select. So when I click cancel in openfiledailog, that error message prompts. I want make the query in the code to have a choice.
This is the code of putting image into sql server db:
Dim pictureLocation2
As String
Dim aa As
New OpenFileDialog
aa.Filter = ("Image files| *.jpg")
[Code] .....
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Mar 29, 2009
I am new in programing and I need some help setting the Enabled = True on a botton when selecting an item from a listbox.I have a project when I have and add a new record form and an edit record form, in the form I have added a listbox where displaying the name of the file that I am attaching, but I have also added a delete button on the form, When I load the form I have the delete button disabled:
HTML Me.BtnDelete.Enabled = False But I would like to do is that when I select an item from the listbox for the delete button to enable.
This is what I have but doesn't seem to work:
HTML
If ListBox1.SelectedItem = True Then
Me.BtnDelete.Enabled = True
End If
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Apr 8, 2011
I want to select a button("Exit") on the ToolStrip after pressing a button ("ButtonFocus To Exit") outside the toolstrip. I used ExitToolStripButton.Select() on ButtonFocusToExit.Click but which seems like its selecting the button ("Exit") but when i pressed enter it never execute the code in "ExitToolStripButton_Click" .
So the button is still not active. Can anyone have fix to it?
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Nov 13, 2009
I am making a game of tic tac toe, and I have 9 buttons lined up in a grid pattern. I want to select a random button for the computer to start the game from.
I have an array set up with all the names of my buttons, and I was thinking of picking a random entry from that array to start working from. This I have done fine, but I cannot change the text of a button. My code:
''# Define the array
random(0) = "tl"
random(1) = "tc"
random(2) = "tr"
[Code]....
as you can see, I can't simply do StartPoint.Text = "O", even thought StartPoint holds the name for the button.
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Feb 7, 2012
The List Box has three candidates and a record Button. Every time the record button is hit I need it to add those button clicks for each candidate that is selected in the List Box. My code keeps counting all the clicks no matter which candidate I am selecting in the List Box. How can I differentiate between each selected item in the List Box.
Private Sub exitButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exitButton.Click
Me.Close()
End Sub
[code]....
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Feb 5, 2010
i am still beginner in coding, i am using vb.net 2005 and access. in my form i am having a radio buttons called DEPARTMENT: english
[Code]...
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Jan 13, 2010
I am creating a "Who wants to be a millionaire" game. Lets say I have 100 questions in a listbox. How can i randomally select a question by clicking a button.
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Feb 20, 2009
after selecting an item from a drop down list the focus can move to a button control with example code in .Net
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Dec 20, 2009
i want to know, which way program runs faster1- add image to button through its property -> assign image from project resource file2- on form load event, assign images to buttons, from project resource file
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May 22, 2010
I am trying to create a button so when a user hovers over the button it will change its image.
I used this code but it did not work.
VB
Private Sub Button1_MouseHover(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim Image0 As Bitmap = My.Resources.Image2
[Code].....
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Dec 2, 2011
We are having problems with the speed in parts of our application, Standard .NET 4 Windows forms application. We have a ListView containing some commerce items and the user can click on items to put them in a shopping cart. The problem is that when clicking 10 times fast on one item, only 4-6 items is added to the shopping cart.I get the same result when building a simple test application with only one ListView, with one item and a debug.print in the click handler.I have tried to add a Button in the same testapplication and this is fast..[code]
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May 5, 2011
I am using two button in WPF i want to change their image ie image button on DIsable how to do it.
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