In my application, every time a button is pressed a complex interface is built, it requires few seconds to be built.All works well till someone press the button too quickly and the application lag behind.Is there a way to read how manu times a button has been pressed so I can jump to build the last interface number equivalet to the sum of the last few click avaoind to try to build the interfaces in the middle.
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I am writing an Automation program to control an MS Acces applcation. Here is the sequence of events:
- Load MS Access Database (Done)
- Load an MS Access form (Done)
- Take dates from Main.VB and populate 2 fields in MS Access form (done)
- Load another MS Access form called Stage_2 (Done)
- Load a file name into a filed in the Stage_2 form (Done)
- Do a click event in MS Access linked to a button called Pre_Stage_copy on Stage_2 form (How do I do these?)
- Do a click event in MS Access linked to a button called Pre_Stage_import on Stage_2 form (How do I do these?)
I have a solution in Vb.NET 2008 windows Form with ToolStripMenuItems, but I need to implement menu navigation without any mouse intervention.I only found mouse events In ToolStripMenuItems, MenuStrip, etc.All MenuStrip and ToolStripMenuItems are created programatically, reading user permissions from Database, then add a handler to manage the events, but the client don't want mouse interaction, he wants only keyboard inputs only ![code]
View 2 RepliesMy VB application is behaving strangley. I have form with fairly large number of controls. I am using case against radio buttons. after curtain number of buttons, it stops responding to more radio buttons.
Then I tried to split controls in to 2 form but now my form.showdialog() too now working properly. It takes new from names but show the old form when running.
where do i have to put the Final single Catch and Try in my application to make sure that any possible errors is intercepted (even on other thread) ?
View 8 RepliesHow to dispose and delete multiple items on form at single loop..Present i am using for Loop to delete all the items..it was taking so much time.
View 2 Repliesi have an event called startButton_click that runs when the startButton is clicked
i want to recall this method from another part in the code
startButton_click()
doesn't work
I am working on a project in which admin wants to send updates of website via email to all registered users on web site.How to do this.?
[Code]...
This is the backend code i am using for sending 1 email.How can i use this to send emails in bulk?
I am using VB Express 2008 and want to return the titlebar text of a window This is what I have:
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String) As Long
Private Const WM_GETTEXT = &HD
Private Const WM_GETTEXTLENGTH = &HE
[code]....
This should simply return the window name I.e. "Calculator"But debugging it i get an "OverflowException" on:
strtmp = Space(length - 1)
If I look in the length variable it has "8975925931411505153" in it Why is it so big, and why is it not just "10" for the number of characters in calculator?
I've a situation where I am trying to extract a large number of URLs from a site, but the site which provides the URLs has an obstacle. Rather than the link directly to the site, they provide a link to an internal page, which automatically redirects me to the URL I need.
i.e.
<a href="www.StartingSite.com/outgoing/1234" ...> Example.com</a>
which passes me to an internal page, then automatically routes me to Example.com
I've suspected if I can do this, it would be through cookies.
Perhaps a little more work, I could create a page which calls each page, then I could acquire the URLs from my history, but my browser would crash for the # of URLs I'm extracting.
any means I could gather the end URL of this link?
I am using zipforge.net to archive files in a small backup program I am creating. Everything works fine however if I try to archive a large number of files the process of zipping them gets slower the further along in the job it gets.
Example: I have a directory that contains a little over 100,000 files in it. Each file is only about 200k of text. When I use the zipforge zip class it starts zip'ing very quickly but as it gets about 40% of the way through the directory it starts to slow down... at about 60% its working at a snails pace.
Memory usage for my solution also goes up proportionate to the archive file size as it grows. Currently it takes around 26hours to backup this directory which only contains 4 gigs worth of information.
If I use a program like winzip I can zip the folder in less than an hour. I am thinking there has to be a way to write to the end of the zip file without having to open it every time or without keeping it open. My backup software scans the specified folder and writes each file path and name into a text file. Then it reads the text file line by line and passes the path + file info to the zipforge addfile().
I know this is probably a stupid question. I am converting a huge string to a integer, it is not working.....saying the number is too large to handle. It is only a 10k character string.I figured this would be fine because 2^16 power is 18446744073709551616.
View 5 RepliesI'm working on a project that involves localizing a large number of Windows Forms. We're dealing with layout using the TableLayoutPanel control, which works nicely. One area we're striking problems with is when we set the Form.Localizable property to True, we then end up having to manage one .resx file per form per language.
That would be fine if the .resx files only contained the Localized text, but it also contains a vast amount of layout data for the form. Is there a way to separate the localizable text elements from the control layout information, that continues to work in the visual studio IDE? I've noticed that I can modify my the form's designer file to look at another resource file, but when I use the form designer, these changes are deleted:
'Label1
Me.Label1.AutoSize = True
Me.Label1.Dock = System.Windows.Forms.DockStyle.Top
Me.Label1.Location = New System.Drawing.Point(3, 0)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(61, 13)
Me.Label1.TabIndex = 1
Me.Label1.Text = My.Resources.ResourceManager.GetString("Form1_Label1_Text")
I have to export the data from the database to .txt file, I have the code below that does export it to .txt file but I'm having problems with this code because the data that I'm exporting is about 5 000000 records, it is quite slow and sometimes the pc can't handle it and stops the exporting.
Dim saveFile As New SaveFileDialog
If saveFile.ShowDialog = Windows.Forms.DialogResult.OK Then
command = New SqlCommand
[Code]....
If you are working on a large record in database. How you manage to use the INSERT,,UPDATE? I mean when selecting a record base on two tables or more and those tables consist of 20 columns it hazard to put all those columns in one query.
[code]...
How to lessen the code without typing all those queries over and over again ?
I want to load 2 crore records in a treeview control with parent child Hierarchy order
for example
- Groupa
- a1
- a2
[Code[....
Dim lv As Integer
For lv = 1 To 33
picPileCard(lv.ToString).visible = False
Next
That's the code but its saying the name hasn't been declared.
I wrote last week about a problem with an MDI program that had a large number of forms (each with a large number of controls on it) that was "sluggish" in loading and in switching between the child forms.I've attached an example program in VS2008 (though the actual app is VB2010)Rather than show the hardware control application with all of the text fields, and picture boxes acting as indicators, I made a simple program to show the point. This is exaggerated as this just loads 2000 or so text boxes on a form. In the real app I have ~ 200 assorted controls per form of picture boxes, scroll bars, text boxes, labels etc. Also, there is a large full screen .jpeg as the back ground of each form. All are generated at run time and are placed on the form in the New call of each form. (as in the sample attached)main issue seems to be the methodology I use to switch between child forms. I make the current form .visible = false, and the next.visible = true. I have used this as it "keeps the place" on each page if the user has scrolled or is looking at one section of the form. When the next form .visible = true happens I see the controls added in a "machine gun" fashion instead of all at once.
View 28 RepliesWe have a customer, who prints a large number of a batch job to a reporting service. When printing large batches of jobs, occasionally he would get a WebException from reporting services saying "The underlying connection was closed".What is the work around for this? Somebody added this portion in the code [code]It doesn't seem to fix the issue though. The customer still notices the Web Exception when she prints a large job to reporting service.
View 8 RepliesWhen large number of records in Database, it throws error "Operation has been canceled by the user" in vb.net. I want to retrieve records from DB2 and display the records in DataGridView in VB.net. If number of records is less it works fine. But if the database tabe has large number of records it throws error "Operation has been canceled by the user". [code]
View 1 RepliesOur current solutions/projects have several classes combined into one file, I'm told this was done due to the slow compile times in VS
View 6 RepliesOut of Memory displaying Thumbnails in Windows 7 64-Bit with 12GB installed
See more: .NET4
'My VB Code:
Private Sub Thumb()
[code]...
I had tested this code: [URL] It works, but a Word application is opened and each new paragraph added using VB code is seen one by one(with a small delay). If I want to open and write something using VB, what is the fastest way ? I do not want to view the changes made on word document live. I want to save the document. So will oWord.Visible = False makes it fast?
View 1 RepliesI am working on an application that has a number of forms in it, doing asynchronous comms with a "radio network" over a serial port.To handle replies from the network in the appropriate form, I am using RaiseEvent. As time goes on, I seem to be needing more and more events. Is there a limit to the number of events that can be firing off at the same time?
I understand that computers can't actually do several things simultaneously, but obviously while the code triggered by one event is still running, another one might fire.
Is there an event that fires in vb.net just before a contextMenuStrip appears when the user right clicks on a control? I need to be able to control the content of the contextMenuStrip just prior to the menu strip appearing. Basically I want to be able to change the content of the contextMenuStrip just before it appears.
View 1 RepliesI have a form which contains a large number of textboxes covering numerous panels/tab controls and I would like to have the user only have one text box visible at a given time and when the user clicks on the screen to another label with a corresponding text box I would like that to appear and the other currently open to disappear. Currently I have the following loop that goes through and changes the visibility of the appropriate controls unless it is the name of the control I am looking for:
'This is used to iterate through all the controls in the form and ensure the visibility of all other controls
' than the active control is set to false.
[Code].....
I believe I may have already posted a much longer explanation of this , but its driving me spare!!! I have several pieces of code that click buttons thru sendmessage commands, all the code works fine in Windows 7! But I put the app on WindowsXP and only some of the buttons will work,
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What is the Coding for the double click event of data gridview and when it click will shown the data in to the textbox. for example in listview
with listview1.selecteditems(0)
textbox1.text=.subitems(1).text.
I have 3 click events in my form. I have delcared a string variable called sVariable in the following format: Public sVariable As String but when I try to use the value from the sVariable variable then it does not pass the value to the other click events. so in the Button1_Click event i type the following
[Code]...
First, I want to know if the mouse is in some area. Then, I want to check if the mouse holds the left click. I want to check as long as the left button is down, and I want to track the mouse's position. And finally, check when the left button is released.
So, in short, where should I start for tracking mouse events in my form?
