I'm making a program that will print jpeg's.The way i have it is I have lots of forms with buttons and when you click a button it prints the photo and a databound label with a line of text.The problem is that i want the user to be able to click one and then click another button right after, to print another one, but as soon as i click one, the program freezes until the photo starts printing so the user cant click to print another one right away.Each picture is around 4 mb.Is there away to make it go faster?The pictures i'm printing are from a pdf file with text and images in it that were converted to jpg. Each page is another jpg. Is it possible to print directly from the pdf and would it be faster since the words are 'text' and not a 'photo'?
I have a text file I'm trying to pull specific data from to make a report in excel and am wanting to know if my code can be improved or if I have something wrong. If it's apparent to anyone that I should be doing something elThis code does work but, very slow. These reports take up to 20 minutes for about 100 files so I am wanting to decrease the time somehow. I have attached the whole sub in a text file, it's about 900 lines long so don't think I should post all of it. This is one part that seems to take the longest:Partial code that reads the text into a string, then each line is read to find whether it holds the data or not. Inside this while loop, I am checking numerous lines to see what they hold and extract specific items. First I verify it's a interface by checking for "line protocol".
Dim str As StreamReader = File.OpenText(filefound) While (str.Peek <> -1) If txtLine.Contains("line protocol") = True Then 'Found an interface,
I am using filesystemwatcher and im watching printer spool activities: Private Sub fsw_Changed(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles fsw.Changed copyfile???? End Sub But, while printers status is spooling the files and size also changing, how can I copy file bytes by bytes?
Something like this: Dim a As ByteDim b As ArrayList Private Sub fsw_Changed(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles fsw.Changed '+++++++++++++++++++++++++++++++++ get all new bytes and added to arraylist
After the arraylist gathered all bytes, I want to copy back to its original state of files to other location.... +++++++++++++++++++++++++++++++++++++++++++++ End Sub
I'm trying to lern VS 2010 from VB 6 and one of the things i'm hawing a problem whid is control array.In vb 6 if you create a text box it's named "Text1" and if you yust copy it and paste it it renames to "Text1(0)" and the new one's name is "Text1(0)" and the code would lock like this
[code]...
then it would print for each loop the random result in one of the text boxes corresponding to i.
My instructor told us how to print documents and how to use databases. What the instructor did not mention is how to print or print a preview of records within a DatabaseDataSet. The book "Programming in Visual Basic 2010" does not explain how to print or do a print preview of Database Source records from within a form. The only thing I was told was to test the print document first before you try to do a print preview. Within a form I used a DataGridView to add, delete, and update the database. So now all I need to do is figure out how to print the updated records from the DataGridView and how to print a preview of the records within the DataGridView. So I hope my question is clear enough to give me assistance on how I can perform these two actions. Thanks this would be a great help, and since the class is online we can get assistance from any sources that we have.
I am trying to make a notepad type thing that uses tabs. Each tab has a rich text box on (After being added via buttons) but am really unable to find a way to get the print preview to preview a certain, single text box on tabs. And obviously i can't add them manually (that i know) as loads of new tabs can be added at any time by the user.
its' only me, or is VS2010 really so slooow? This taking 50 seconds to open vs2010, 30 seconds to change from an small project to other small project.as a comparation, in the same machine I can open three different vb6 projects, each one in one different vb6 instance and each one takes "only" three to five seconds. of course I can maintain all the three instances opened all the day, sutching from one to other, debugging, changing, even generatin' exe files, without noticeable penalties.machine is Dell Vostro 1700 4 GB, two internal disks, Win Vista business, Intel Core 2 Duo T 7500 2,2 GHz. two years old.
what i am doing is downloading headers from a web server using a tcpclient which works great the headers describe diffrent files and there are hundreads per file, if i download the headers and write them to a text file using a streamwriter it works great, but i need the headers to be in a text file depending on the name of the file in the header, so i need them grouped together, i am now using streamwriter to write the headers to seperate textfiles depending on the filename in the header but it is reallllyyyy slow for some reason, im not sure if it is because it has to load each file then write to it? i only have to append the new header to the end of the text file i dont have to open it up and read through it.
I have created an app, that reads data from a .txt file, and compares it to data retrieved from a website. The only problem is that my program slows down and sometimes even freezes at specific points in the program. I don't understand why, because that specific point in the .txt file is no different then the rest of the file.
Here is my
Function vertaalGegevens(ByVal teller) Dim webStream As Stream Dim webResponse = "" Dim req As HttpWebRequest
[code]....
I also tried making a different thread, but that became way to complex for this simple program.The text file i import is 1.5 mb big, and contains aproximatly 66,000 records that need to be run trough. These records are contained in a ArrayList. The word "teller" in the code stands for count, this value gets higher each loop. The loop is run outside this peace of code.I was thinking that maybe I didn't close the webresponse object, so I also tried webResponse.Dispose(), with no success.
I noticed that my application is running a bit slow. This is a Windows Service built using VB2010 with SQL Server as a back end. Its main function is to poll a folder looking for a text file. If found it reads the text file and imports the data into SQL Server.
While the slowness could be caused by a number of reasons, I am looking at my code to determine if it could be more efficient. Below I've pasted snippets of code where I initialize the DB connection and execute SQL statements. I've also included a snippet that illustrates how I am processing the text file.
I'd appreciate if the group could have a look at these and let me know if the method that I am using is the most efficient possible. At this time I am also focusing on other probable issues, but I can't rule out the possibility that the code that is in place might be a contributing factor.
I've tried using the VS 2010 beta to edit some real projects, and it is next to unusable due to performance issues. The cpu is more or less constantly at 100%, and most often the code editor uses around 10 seconds to respond to any text input. If I introduce a couple of compile errors things get even worse. Are there some drastical performance improvements that are planned in the VB editor before release, or are there special things that might trigger this?
I have been using VS2010 without any issues, always on the same application. Suddenly within the last my solution has become unbearably slow when right clicking. When doing other projects, it is fine. The only thing I can think of that I changed was disabling the SQL Server debugging.It happens if I right click anywhere within the code editor. Everything freezes for about a minute and a half, then the right click menu shows up. Intellisense seems to work fine. It is only the right click.The project is fairly big, but it has been working fine. I am working on a 2 month old top of the line MacBook Pro (running Windows 7 64 bit in Boot Camp). I did do the patch Tuesday big batch of Microsoft patches in the last 24 hours...
I have a number of FTP routines all based on the code below. Why does this take 15 seconds to run the first time? [Code] If I use an FTP program like FileZilla or CuteFTP to connect to the same FTP server they make a very much quicker connection. Any ideas?
I am using DataSet.ReadXml() to create a DataSet from the following XML file, so that I can quickly query it using Linq.[URL]..I then use the following object to create a DataTable which can be used as a dictionary, with a ConvertToFriendlyFormat function that takes an Emulator_Id and and a string that corresponds to a DicEntry node's StoredFormat attributed, and return the same node's FriendlyFormat attribute.
This does work BUT it is extremely slow (~11 seconds to call it ~220 times). I have been unable to figure out how create the DataSet when the object is initialised and just query the simple DataTable in the ConvertToFriendlyFormat call. I guess this is what is slowing it down?
am new here. am using vb2010. I have a form with 3 panel. each panel have 10buttons. when click on button 1 from panel 1, it will show panel 2. Then on panel 2, when cancel button is click, it will go back to panel 1. My problem is, when go back to panel 1, all the buttons in panel 1 shows very slow. It shows one button after another.
I`m trying to write a small program which connects to a serial port at 115kbps and reads a stream of continuous bytes from a microcontroller. The program should then graph these bytes by time. Ideally this all happens in "real time" and as quickly as they can be sent.With a 50ms serial write delay on the micro the VB program keeps up fine, but if I lower the delay any further, say down to 1ms, the update can`t keep up and the serial buffer just grows.I wasn`t expecting the bottleneck to be the PC side so it`s likely my code is doing something wasteful. Or maybe it`s the graphics which are drawing slow?
Private Sub DrawGraph() Try Dim y As Integer = m_Y Do
I am new to VB.Net, but I can tell you so far I love programming. That said, I'm building a tool basically to parse and display simple plain text log files. I'm hitting one stumbling block that really has me frustrated.
Other tools are able to load huge log files (500MB even) in a number of seconds. My tool, basically hangs loading a file that is maybe 5MB.
I'm using the MyString = StreamReader.ReadToEnd to read the contents into a string, and then RichTextBox1.Text = MyString to display the contents. That said, I really want to display the contents in a datagrid, but there has to be a better way of doing this?
How can I get my application to load larger files and display them faster? What am I doing wrong?
i have the code below to upload pictures for my application. I will like to add a line or more to this code that will display a success message like this"Picture has been uploaded successfully"I know i will need to add a label control to display the message but i dont know how to go about. Here is the code:
I am making an app. that will print ID Photos. As you can see on the image below there is 4 ID photos (4 Picture Boxes) ontop of a Pannel, the Pannel represent the photo paper for printing. I need code to print every thing (the 4 images) on the Panel.
trying to print a Form that I created using a VB.Net console application. My console application creates an instance of a Windows Form and fills it with data. I then created an instance of the Print Form class from the Microsoft Power Pack and am trying to get the form I filled with data to print but no matter what I've tried it just prints the command console window.
Dim firstPage As New FrontPage 'Windows Form Dim pf As New PrintForm 'Print Form Power Pack firstPage.Visible = True
I'm planning to let my site users upload photos through their mobile devices specifically Iphone.Currently, they can only upload photos through their desktop or laptop.What would be the best approach using ASP.NET 3.5 and Visual Basic?
