Getting Two Sets Of Information From A Source File
Apr 18, 2012
I want to get two sets of information from a source file. Say user name and address to their profile. I so far I'm using two for next loops to get the information I want and save it into the text file. Works great. Problem: I would like to print to file first line of For Next output then append to that the first output of the second For Next loop. Then do the same for second out put until the end of each For Next loop is complete. [Code]
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Aug 17, 2011
I have a 'SrcDirectoryTextBox' which stores a folder nameThis folder name is read in from the .ini file I have created and works okI also have a srclistbox which is filtered by a *.fil (filetype)I can read in the ini file and display it, but how do I make the srclistbox trigger after the ini file has been read, so that it displays the filenames.
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Aug 27, 2009
I am using VB2005 and trying to put an application together.What it needs to do is retrieve information from a binary file, possibly alter that information, and put it back into a new file.The file is a .wav file with data appened to the end. There is an additional section at the end of the .wav file which stores xml data.I have found that if I open this in a hex editor and make a 1:1 swap on any of the bytes that the application that the file is for can still read the XML.If I tried to add or remove characters from the XML then it would not read. I located a header byte and incremented it to resolve this.
This worked as an excellent bandage to do conversions where the data always needed to be changed to the same thing.What I have been asked to do is build logic that allows for different things to happen depending upon what data is contained within the file.The method that I am currently trying to impliment is:
Read through the file with a system.io.binaryreader
Searche for a bytestream that will signal data is coming
For example:
If System.IO.File.Exists("C: est estread.wav") Then
Dim findit() As Integer = New Integer() {&H3C, &H55, &H73, &H72, &H44, &H65, &H66, &H30, &H31, &H30}
Dim i As Integer[code].....
And then extract all the data till the end of element marker "<" It seemed like there should be a better way and I was looking for some insight. If I proceed with this method, I will have to read the file one time to gather the information and then a second time to write it all out with the header modified for length.This is my first experiene with working with binary files in this way.Also,I've been experiementing with building a string and slapping it back in at the end using the binarywriter.write(string) method.I noticed that it was putting in header characters before the string.These seem to change if I change the length of the string.At one point it was d0 07. Later it became e7 07. Does anyone know of a way to prevent this header from being inserted?
I tried a for each loop to grab all of the characters from the string, convert them to a byte array and deposit the byte array into the file, but the header remained the same. When I write the byte array generated from a system.io.binaryreader I do not get this header.
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May 3, 2009
I am using bindingsource.find to quirie information, its working so nice but I have a problem when the bindingsource cannot find the information I want it to show me the information that is inside the field, even knowing that the information that am looking for is not there:
I have something like this:
dim findinformatio as string
inputbox=(type the name)
dim findme as intenger=me.bindingsource.find("LastName", FindName)
me.bindingsource.position=findme
if bindingsource.position=findme then
msgbox(Findname)
else
msgbox(me.bindingsource.find("LastName", findName)
I am doing it because if the information that am looking for is not in the record field. I want the bindingsource show me the information that is inside the recordset field(LastName). I used to do it with odbc and works fine but with bindingsource I cannot, Why? And I have a compact database, sdf. I loaded the tables on my project.
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Mar 20, 2009
I need to create a timer that sets the time from an existing text file. The time format in the text file is 00:00:00 (hours,minutes, seconds). An excerpt from one of my text files looks like ClockSet = "00:49:05"
Also, if possible, when the timer reaches 2 minutes I would like the backcolor to flash between red and green.
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Jan 26, 2010
I don't know what this is called so I've struggled to find an answer from google but I have a vague memory of it from t'old days.I've sub-classed (* see below) about 8 framework controls, overriden some properties and added some functionality into each one.The changes I have made are identical in every case. If I make a change, I have to go through each class and apply the same change there.I was hoping there may be a keyword such as <IncludeSourcefile "common.vb> that I can put into each class.
(* note) I use the term sub-classed but I don't know if that's the correct terminology. I've also seen it used for call-backs. Is sub-classed the correct term to use?
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May 24, 2009
what i am trying to do is extract information beween two tags in some html from the source of a website. The contents of the text between the two tags will always be different. the code i currently have is;
[Code]...
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Jul 24, 2009
how to save information into a text file from runtime VB2005. However, I wish to be able to write the information into any kind of form of file that cannot be simply opened and read by anyone (such as text file can be). Is there anyway that VB2005 can do this?
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Dec 9, 2009
I'm using Visual Basic express 2008.The application I am working on is the first major project I have ever undertook with visual basics. The application is a launcher for a private server for world of warcraft.I have a menu bar that pulls the file path of the wow.exe and puts it in a hidden textbox, I then have another option that saves this text to c:wowexe.txt. All of this works GREAT!
How can I read the .txt file to end and return the information stored in the .txt file to this line of code.
Dim RetVal
RetVal = Shell("This is where I need the data from the .txt file to be seen", 1)
If your wondering why I don't just type in the path of the .exe, it's simple, not everyone installs World of Warcraft on the C drive.
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Jun 15, 2012
ive been trying to use System.Security.Cryptography to encrypt and decrypt a file but its not working for me
this code
Private Sub EncryptFile(ByVal sInputFilename As String, ByVal sOutputFilename As String, ByVal sKey As String)
Dim fsInput As New FileStream(sInputFilename, FileMode.Open, FileAccess.Read)
Dim fsEncrypted As New FileStream(sOutputFilename, FileMode.Create, FileAccess.Write)
Dim DES As New DESCryptoServiceProvider()
[code]....
called with
DecryptFile(OpenFileDialog1.FileName, SaveFileDialog1.FileName, "12345678")[/CODE]
outputs a file that is almost 2x as large as the source file that was encrypted.
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Sep 14, 2011
In my program I allow the user to copy a file from one folder to another. If the file already exists in the target folder I want it to be overwritten.
All that works just fine - I'm not asking how to copy files.
But here's an example
Source file is:-
\SomeMachinesomeFolderfile.xyz
Target is:-
P:file.xyz
This might at first look like two separate files but in this case P: is mapped to \SomeMachinesomeFolder so the source and the target are actually the same file and the file copy will obviously fail.
Of course I want it to fail but my problem is that the windows generic error message seen by the user is not very helpful. It says something simple like "... can't be copied because it's busy". If the user isn't very bright he doesn't realize he's selected the same file both as source and target and he doesn't understand why it's busy.
What I want to do is detect in advance that the source and the target are the same file and display a more meaningful message to the user and not even bother trying to copy.
So, is there a way to detect that
\SomeMachinesomeFolderfile.xyz
and
P:file.xyz
are actually the same file?
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Jan 17, 2011
I am writing a program that uses several textboxes that a user will fill in and then click the add button to add the data into the datagrid. There is no backend database or anything. Just seeing the data in the program only.
What I want to do is then export this data from the datagrid into a file, preferably excel.
I've done copying textbox data into txt files but I can't find a method to copy datagrid data into a file.
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Oct 10, 2011
I am making trying to make a program that can read the file information directly from a specified file, but I am having a lot of difficulty reading things like file comments.An example of this can be found in windows XP when you alternate / right click on any file and click on properties. You'll get a lot of extra information.Now I have a few questions about this.
1.Can this information even be read in VB.NET
2.If so how
3.If not do I need to create some kind of data file to store the file information
Here is what I did so far
[Code]...
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Jun 21, 2010
I have an icon file (32x32) and I added it as application icon in the properties and it is coming fine only if the view is set to "Medium Icons" else it is showing only the default icon. How can I add all sets of icons to an application so that my Icon will be visible in all modes?
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Feb 4, 2010
I have a simple control that sets a variable to a value. What I want to be able to do is check the value of this variable on another form.Here's the code:
[Code]...
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Mar 26, 2012
I need to link different arrays of data that I am gathering from different Select Cases.For Example:Araray A, B and C from Case 1Array C, D and F from Case 2 Note: Array C is common between two cases.I know in C++ I could have used Pointers and use SQL in Java.
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Sep 16, 2009
well i'm currently making a downloader for miniclip games to play them offline. i could make the code to get the download link and i could download them getting the code to get the link took some time to collect . i could find through google how to download that link
My.Computer.Network.DownloadFile(TextBox2.Text, SaveFileDialog1.FileName)everything works fine and the file is downloaded successfully, what i need to know now is how to get file size, or how much is downloaded from the file, download speed and show the download on a progressbar
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May 3, 2009
I am coming from VB6 and I am starting to convert an existing VB6 code to VB.Net. What tools can I use to automate this task?
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Feb 5, 2009
I collect two sets of data from two different databases, This data is now in two collections. I then join/append the one collection to the other and then put it in to a list view.I really would like to order this list view by the first column without the click event.To make this even harder the First column contains Data that is DateTime and i have found that it orders the items by the day number and not the months or years or time.I have found one way but it then cause's me further agony when doing some checks upon the data within the listview later in my code. This answer is to rearrange the format to "yyyy-MM-dd HH:mm:SS" then using the listview.sorting = sortorder.
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Nov 12, 2009
I have only 2 sets of "fixed" numbers used, that I need to be able to toggle between. Particularly, for array sizes/for loops. Is it best to use "Collections" in VB.NET to accomplish this?
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Jun 9, 2010
I have some text in an .rtf file which uses a non-English character-set (it's chinese).When I open this in Wordpad or Word I see just the chinese characters.When my app opens the .rtf file and reads the file's contents and puts it into a RichTextBox for display, I get "everything" from the .rtf file, i.e.:
{
tf1ansiansicpg1252deff0deflang2057{fonttbl{f0fnilfcharset134 SimSun;}{f1fnilfcharset0 Calibri;}}
[code].....
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Jun 8, 2012
Since plan1 and plan 2 all plans having same fields but due to their variable values total I make 4 tables having one to many relationship so that duplicate data for few fields get accomodated under different Id. and now there is no need of filtering data also and 4 databinding sources give a serial values to my comboboxes to select veriables to get further calculations.
I have another question now in further calculation there are many calculation sets with using if elseif if statment for such number of sets how to connect them since in form1.vb code file
if I place them one after other some calculations get correct some gets wrong.I hope you understand my question.is there any method to connect such sets( if elseif if) statments one by one under one buttion_click to get correct answer for all the sets.
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Feb 7, 2011
There are plenty of seemingly related Linq questions, however a quick browse through the content doesn't seem to answer my question specifically enough for my limited intelligence to grasp.
We have a table named PropertyInteractions in which is stored threaded messages via a thread id, the thread identifier is the Id of the initial interaction record. Given the following Linq query (which retrieves all interactions concerning a user), how might I split interactions into lists of PropertyInteractions grouped by Id?
[Code]...
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Aug 10, 2011
I have a stored procedure:
CREATE PROCEDURE [TestProc]
AS
BEGIN
select '1a', '1b'
select '2a', '2b', '2c'
select '3a', '3b'
END
If I execute the following query using SQL Management Studio,
[Code]...
How can I get the three result sets using SqlDataReader? Or even three SqlDataReader's? Or is it possible to get multiple result sets in just one query in VB.NET? Is DataSet my only option?
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Dec 2, 2009
There is a stored proc.. Which was returning to result sets..
Ex:
select * from table1
select * from table2
If I get this data to a Dataset, Definitely I will get 2 data tables with index (0,1)..But what if go though a Datareader? I had checked that just now.. And I got a result of first result set (i.e Table1 in our example)..
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Jul 21, 2010
I am trying to write a program that will help people script for a game. Ok so when you write on visual baiscs if you start an if statment it changes the "if" to the color blue. How could i do that in my richtextbox?
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Aug 15, 2010
How do I make a property to have a set of selectable values, in a way such that they work by intellisense-drop-down, as i.e. the color.white, color.black etc.? I want to do this like for integer values I may want to have selectable by "keywords" with the hard values only existing in a unique class file, or whatever is necessary ..?
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Jun 2, 2010
Is there an easy way to get the relative complement of two sets? Perhaps using LINQ?I have to find the relative compliment of a set A relative to B. Both A and B are of type HashSet<T> but I think the algorithm could be made more general (IEnumerable<T> or even ISet<T>)?
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Feb 21, 2012
inserting date/time to database manually using sql query.
[Code]...
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Jun 3, 2011
I have a regular expression that I use to grab data between two sets of id's for example:
<CLASSCOD>70</CLASSCOD>
The regular expression I use is:
(?<=<CLASSCOD>)(?:[^<]|<(?!/CLASSCOD))*
Which works in most case but when I have a single value like this
<CLASSCOD>N</CLASSCOD>
It says there are no matches.
The whole data string looks like this :
<STATUS>PRESOL</STATUS>
<DATE>0601</DATE>
<YEAR>11</YEAR>
<AGENCY>Department of the Interior</AGENCY>
<OFFICE>Bureau of Indian Affairs</OFFICE>
[Code] .....
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