I don't actually know where to post this cuz i don't actually need code, i just need help on the logic. But if i could get a code then that's fine either
you see, i'm trying to get specific details on a text file.For example, the contents of the text file is like this:
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So far I have a button that calls scan.bat which simply runs net view and outputs to file.txt. I then want to strip out all the gumpf so it just leaves the names of the PC's in the list (not the remarks and all that).I'm new to all this, so it might not be the most elegant way of doing this!
Imports System.IO
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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The homework assignment goes like this: write a menu-driven program to manage an employee list. the names should appear in the listBox when the form is loaded. When a name in the listBox is highlighted the name and number txtBoxes are loaded with the correct name and employee number. Use the Update menu items--modify,add,delete to edit the listBox items.When the Exit menu item is clicked the new employee list should be written to the text file and the program should terminate.
Well, the first part was completed successfully, but when I tried to delete a name and number I recieved an error box that said "InvalidOperationException was unhandled", "sequence contains no elements" that pointed to line 35. msdn and help were no help, talked about dataset tables? Did I use the incorrect syntax? Once I resolve this issue, the other two--modify,add should be similar, but then how do I reconstruct the text file so that it will properly load the next time the form is loaded?
Public Class Problem_1_p451
Structure Company
Dim name As String
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I'm expanding upon a tutorial we have in class for a cash register. The basic program is to put the name in, put the price in, then manipulating labels display the item name, price, tax, and price after tax. Three buttons being calculate tax, clear the form, exit the program.
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The below is the content of my file(which is already sorted). Whichever is there between square brackets, relate to one transaction. The transactions can be groupa, groupb,groupc etc.
Jan 2012 02:10:12 [5678](groupa):Part 1:data1
Jan 2012 02:10:12 [5678](groupa):Part 2:data2
Jan 2012 02:10:12 [5678](groupa):Part 3:data3[code]...
I want to output the below data to another file using vb.net. It should contain the transaction group, followed by the time(the time should be taken from the first row of the contents grouped by transaction, then grouped by the number inside the square bracket, in the contents). Next line should concatenate the data(after Part [1-9]:), corresponding to the particular transaction grouped by the number inside the square bracket. For the above contents,
groupa at Jan 2012 02:10:12
data1data2data3data4
groupa at Jan 2012 02:13:14
data1data2
groupb at Jan 2012 02:13:24
data1data2
I have a text file that has about 200 programs that were dumped from a cnc machine. I want to be able to take that text file and extract each program and save it as it's own text file. There is a distinct character at the beginning and the end of each individual program. I an new to vb and the projects that I have done to this date involve database front ends so i have no idea on how to work with text files.
View 32 RepliesMy current project is to process several files. The files come from a Unix server and have been SFTP'd to the Windows XP machine. (That's fixed protocol, I don't have control over it.) My problem now is that the Unix new line characters and Windows characters don't match. The solution is to read the file line by line and replace 0x0A with 0x0D + 0x0A, or Asc 10 with Asc 13 + Asc 10, or vbLf with vbCrLf, however you like to say it.Well I have a working function to do this, but any extra speed I could squeeze out of it would be fantastic. The text files I'm working with can reach sizes of about 100MB. So to the question:
Q: What is the fastest way to read a file in, change characters as necessary and then write the file out?Here is my current working code.
Private Sub FormatCharacters(ByVal files As String())
Try
For Each fileName As String In files
FileSystem.Rename(fileName, fileName & ".old")
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I thought you could use a structure as a container. I have line_1 with a line of data read in from a file. I only want to Look in position 1 of the line and position 8 for 9 and position 31 for 11. If I create a line_2 with the parts broken out for pieces that I want to look at then I could use a with statement right?
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a text document containing information as:In/memory of/wendy/smith 6th of march 1545/ foreever in our thought/love liz and pony/i`ve got to develop a software in vb that will read the text file above and extract names, date.for each inscription it is required to display on a computer screen, IN TABULAR FORM, the details mention above.
View 10 RepliesI am looking for tools that will enable me to search and manipulate pdf files and pdf vector graphics. I want to search a pdf image/file for specific content and then manipulate the image. Are there any known resources out there? I have looked at the documentation on the Adobe web site, but I don't know where to begin. I'm looking for books or a forum where I can get specific information and examples.
View 1 RepliesI have a list of .txt, .doc, .pdf on my listview. How do i code this problem;
1. When i double-click the item (sample.txt) on my listview it will open in a notepad.
2. When i double click the item (sample.docx or sample.doc) it will open the MS word and shows me the things written on the particular item.
I created a telephone number form where the user enters the telephone number in a text box as (nnn) nnn-nnnn. The first 3 digits in parenthesis are the ISD code, the next three are the area code and the last four are the local number. I need to separate out these three fields of the phone number and display in three separate text boxes labeled appropriately. Now, suppose the user enters the phone number in a text box as a continuous string of 10 digits, where the first three represent the ISD code, the next three represent the area code and the last four represent the local number. I'm lost as how to change this string into the form (nnn) nnn-nnnn. This is what I have
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i have an assignemnt in my visual basic express 2008 class, were i have to type in an image name, like paris.jpeg,and automatically manipulate the file to be called paris-steg.png. Once this happens i click the manipulate image button and the image should be altered so that paris-steg.png has a message hidden in it. Then i have to decode that message. At this point im having troubel getting the file name to automatically appear as paris-steg.jpeg, and you will proabbly see why with my code. I need to know how to do this. The way i have it, i basiaclly add -steg.png onto the text typed into the text box, this doesnt work when the user types in paris.jpeg as it comes out as paris.jpeg-steg.png. heres the instructiosn and my code
(6) When the text file does not exist, alert the user with a message box and do not do any further processing.
(6) When the image file does not exist, alert the user with a message box and do not do any further processing.
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In this program you should read text from a file one character at a time instead of one line at a time. If <tt>sr</tt> is an IO.StreamReader, then <tt>sr.Read()</tt> will return an integer that is the value of the next character in the file. Use <tt>Read</tt> instead of <tt>ReadLine</tt> in this program.You can check whether a file exists by using the code <tt>IO.File.Exists(filename )</tt> . The function will return a Boolean value (True if the file exists but False if not).
You can check whether a string ends with a specified pattern by using the <tt>EndsWidth(pattern )</tt> function. For example, if <tt>s</tt> is a String, then <tt>s.EndsWidth(".txt")</tt> will return a Boolean value (True if <tt>s</tt> ends with the pattern but False otherwise).In a string, <tt>IndexOf(pattern )</tt> gives the first position where the pattern exists, but <tt>LastIndexOf</tt> gives the very last position where the pattern exists.The code <tt>s = Chr(i)</tt> converts the Integer <tt>i</tt> into a character and assigns the character to the string <tt>s</tt> .
I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
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im working on a small application that lets you input a phone number with "-" hyphens, and then copy that number to a label control minus the hyphens. So for instance 111-234-567 would become 111234567, i have accomplished this using the string.
replace command, however i was wandering if it would be possible to iterate through the string with a for next loop looking for the hyphens and then removing them with the string.
remove command, ive spent nearly 5 hrs trying to get the code to work, but to no avail, no errors are being thrown up, but the hyphens still display along with the number, i am currently teaching myself, and its a sloooooooow process. here is my unsucessful code
[code...]
I'm familiar with creating tables, updating, deleting, etc. etc. using a seperate VB program and a MS Access database.
However, I would like to know how I can start manipulating reports.
For example:
The user selects items in a combobox to filter certain items in a report.
The user selects a radiobutton to determine how the report is ordered (ascending by what field)
I've tried attacking this problem using VBA, but I haven't got very far. I couldn't even make a OnClick event procedure to execute the code I had written.
i want to take a comma delimited text file and then select all unique records based on one of the fields in the text file. should i read the text file into a data table or just use a data reader?
View 7 RepliesHi, i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated.This is the code im using right now:
Private Sub TreeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
Select Case e.Node.Index
Case 0
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Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
So I'm in the final stages of finishing a program I've been working on for nearly a year now, and this is basically my final hurdle. The Save dialogue is working beautifully, with 'flags' in order to switch it over from the regular input into text boxes to the Listbox input protocol.
However, I'm having a *** of a time getting it to take lines from the text file and put them in the proper text box. Here is an example file:
Quote:
SHOWNAME
CALLNAME
BREED
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So with the sample file I provided above, in the textbox named callNameText would appear "SHOWNAME", and so on and so forth. With this build, I get a NullReferenceException on the "Me.Controls(strboxNames(i)).Text() = strAllText(ati)" line.
i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated. [code] Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
View 3 RepliesI have a program that will register you for a certain website using textboxes and stuff but I have an invisible web browser and it just enters the text into the right spots and clicks the button.I was told that I can get rid of the web browser and do the whole thing faster and easier using "HttpWebRequest and HttpWebResponse".
View 2 RepliesI understand that there are several ways of Inserting, Updating and Deleting records in a database such as DataAdapters, DataSets, TableAdapters, SqlCommandBuilders, Parameterized SqlCommands, StoredProcedures, etc, etc,etc. According to David Sceppa Sprocs are the most preferred. Ok, I go with him on this one (who am I to challenge him anyway?).
My question is, apart from Sprocs, which of these options is the BEST for a large commercial database application and why, taking performance into account? What are the benefits and drawbacks of each option?
I have eight text boxes each can have any numerical value only consisting of the numbers 1-8 up to eight digits each. No 0's or 9's.I am using a timer to loop through the sequences of text boxes at a given rate. This is already configured.Now here's the hard part so bare with me.I need to output the first value of a text box, wait some time then output it's counter letter (below the number on the keyboard), go to the next text box and repeat. Example:
1
34
765
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This is probably quite a simple question, but I can't remember how to do it off hand.I have an e-mail address of "foo@bar.com".I want to grab the @ and everything after it and then I'll be adding a prefix to the front of the address as I go.
I'm just wonderng how I get hold of the @bar.com from the string?
I know I should know how to do this as this is a really simple operation.
this topic has been touched multiple times on Stack Overflow, but my search still did not give me an answer.
I'm looking for a SIMPLE and easy to use, very basic, image editing library. All I need to do is check the size of jpeg and png files and rotate them by multiples of 90°.I can develop my app in VB.NET or preferably VB5 and I'm not using any other library.
I tried the Advanced Image Library (based on Free Image Library), but I can't get the dll to correctly register and I'm afraid that I will also have problems when distributing the application.Is there something simpler? If it's not free it's fine, as long as the cost is reasonable.
I wanted to know if it's possible to remove a paticular item in my collection and then add it back at a certain location? e.g. say I use RemoveAt and remove the first item in the colleciton; after, I want to add it back at a particular location (index)? Maybe this isn't possible with this type or any other type collection?
View 6 RepliesI'm developing my first SQL Server database app (for 30+ users) and could REALLY use some advice particularly because the app's design is pretty complex so please bear with the long explanation. My app eventually will display an always (hopefully) up to date list of files (and some related metadata) for a variety of purposes (open file, modify file's metadata, etc). The users deal with (open files, modify metadata, etc) dozens if not hundreds of files everyday so developing an app that making it all super quick and easy would really save company time in our environment over the course of a year.
The list is always enormous so my plan at the moment is to never close the app once it's running.The app will have schemes (TBD) for updating the list (modified data, new files & deleted files).It takes approx 45-60 seconds to load all the data which would make my app unusable if I were to allow the user to close the app.The design gets complicated because the list is a merging of two folder structures that share
some relative folder structures and files. The main list comes from a document management system (DMS) and the secondary list comes from a specific local folder structure (e.g. C drive). As with many DMSs, the user cannot modify documents directly in that system.
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First thing I should point out, i have looked all over, especially on DIC for examples, have found some, but none that i could get to work for me. I made a program that inserts data into a DB and then on another form it shows a gridview with the data from the DB. My first issue is im not sure how to insert items into the DB when the DB has an auto number field. I have seen on the internet to just not specify that field and let the DB handle it but its not working for me. This is what i have for that part:
Dim cmdInsert As New OleDbCommand
Dim AdoRs As New ADODB.Recordset
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My.Settings.regLibCardNo = "10-0000"
I want it to increment
CODE:
I am stripping few tags in html file and then assigning that html string to documenttext property of webbrowser. i can successfully do it, but when i use webbroswer1.document.GetElementById(xx) i am getting invalide type cast exception error.. even if i use any of webbrowser document property i am getting invalidtypecast exception.
View 6 Replies