Determine Number Of Lines In StreamReader?
Jun 6, 2007I am developing a VB.net 2005 console application and before reading each line I need to determine the number of lines in a streamreader.Is there a way to do this easily?
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Using StreamReader To Determine If File Has Been Changed
May 27, 2011I am curious. If I am using a combination of streamreader and streamwriter is there a way that I can have a stream written only if File X has been modified? [code]
View 1 RepliesStreamReader - Reading From Lines?
Oct 13, 2010I have the following code;
Public Sub writetofile()
' 1: Append playername
Using writer As StreamWriter = New StreamWriter("highscores.txt", True)
writer.WriteLine(PlayerName)
[code]......
Delete Lines From A Csv Using Streamreader Or Streamwriter?
Aug 14, 2010I am writing a click event to delete an item selected from a list view which will utlimately be deleted from the csv file the information is coming from.Currently I am having streamreader read each line and then replace the selected line with a blank line. This creates blank lines in my csv files. Is there a way to delete a line using sr or sw without creating blank lines?Or is there a way to have them read/write a file skipping any empty lines?
My
If ListView1.SelectedItems.Count = 0 Then
MessageBox.Show("Please select a class from the upcoming schedule list.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Else
[code]....
Streamreader Reading Specific Lines?
May 17, 2010when using stream reader to read text files how would i go about reading or referencing specific lines.so if i wanted to read from say line 2, 3, 4 or 10,11,12 in the textfile or what ever.
View 7 RepliesUsing StreamReader To Read Lines From Textbox?
Sep 20, 2010I am using Visual Basic 2010 with Windows 7. My code is is follows:
Dim file as system.IO.StreamReader
file = My.Computer.FileSystem.OpenTextFileReader(C":financialsprogramcurrency.txt")
TextBox1.text=file.ReadLine()
file.Close
For some reason my program does not execute beyond the Dim statement and instead displays the form without text in TextBox1.
Listbox And Streamreader - Select More Than One And Have The Whole Of The Lines Loaded?
Sep 24, 2009Using Visual Studio 2008
I have a Listbox where i use OFD to list selected text filenames, can be multiple and from different drives
[code]...
I would like to be able to select more than one and have the whole of the lines loaded. I have tried many approaches, 'For each line' for example, but cant get my head around it. Another issue is that i would only like to see the textfile name in the listview box instead of path and filename.
VS 2008 StreamReader Read Lines From Bottom To Top?
May 20, 2009the default readline method of streamreader reads the text file from top to bottom how i can reverse it?from bottom to top?
View 8 RepliesVS 2008 StreamReader Reading Certain Lines From Text File
Aug 15, 2010I am in the process (slow process) if learning vb.net by trying to create a simple application that will read and write (save) chosen information to a text file. The application has text boxes (name, email address, etc) and I want to read information from certain lines in the text and place in the given text box.[code]When I start debugging mode it does not display the text until I click onto the text box and it's displaying the first line of text in the file. How do I skip the first line of text and have it display the second line (or the 6th, 24, or whatever line I need to be displayed)?Then I can start working on learning to use streamwriter
View 6 Replies.net - Using StreamReader To Read Lines Of User Names And Place In A Shell?
May 19, 2011The following is what I have that is exporting all usernames to a text file.
[Code]...
VS 2010 StreamReader Freezes Project After Reading A Few Lines Of STDout Of FMLEcmd.exe?
Oct 10, 2010Im having trouble with streamreader.. It keeps locking up the debugger after the first 3 lines.. The last line being blank.. There is basically a status readout screen that updates every second or so with statistics about the Video Stream in the FMLEcmd.exe program
View 3 RepliesVS 2008 RichTextBox - Determine Lines Have Changed?
Apr 23, 2011I am working on a way to determine if the lines of a RichTextBox have changed.I currently use this
Dim newhash As Integer = Me.Text.GetHashCode
If newhash <> Me._prevhash Then
Me._prevhash = newhash
Me._lines = MyBase.Lines
[code]....
But this method has a bad issue: The text property takes a while to "load up" plus getting its hash code adds to it. This code runs every time the Lines are needed (it is a property). So this
For i As Integer = 0 To Lines.Count - 1
Dim line As String = Lines(i)
Next
Takes ages to complete, because for every line it checks if the lines have changed.I am trying to evade using MyBase.Lines too much, since that REALLY takes ages to load.
- I can not use the modified property since it is unreliable (set to true if only a text color changes)
- Can't use the RTF since it changes without the text changing (coloring) and the hash code is slow as well.
- Can't use the TextChanged event, since it is sent after the SelectionChanged event (for some reason)
Streamreader Limits - The Streamreader Works Fine Until The File Is More Than 100,000 Bytes Long?
Apr 19, 2011I have a problem with a streamreader in visual basic 2008.I am updating a database from text files on an ftp server. The streamreader works fine until the file is more than 100,000 bytes long.It reads until it reaches this point and then just ends. No error message, it just reads to this point which happens to be 2 fields out of 6 in the database stream. My question is - does the streamreader have a limit? And if so what is a workaround?
Dim connString As String = "Data Source=" & pDataBase
conn = New SqlCeConnection(connString)
Dim strQuery As String = ""[code]......
StreamReader/Writer - Loads An Entire Text File Into A Streamreader Variable
Jul 9, 2009I'm writing a program that basically loads an entire text file into a streamreader variable, then reads this variable line by line and parses and writes a line into a new text file. I'm VERY new and my knowledge is mostly self-taught, but I can't seem to get out of this one. It works for smaller files, but it appears to reach a limit in characters at some point because in a file of 900 lines, it stops writing about halfway through 800 and there are no errors, the program actually completes and the message box pops up.
There are a few things with this code I already know I should fix, such as creating the new text file name, it's messy, I just don't know how.
Private Sub btnProcess_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProcess.Click
Dim IndexValues As String()
[CODE]...
Determine Number Of Characters That Will Fit In A Control?
Jul 12, 2011I've written a piece of code that takes 3 fields from a database and writes out the 3 added together, but with the middle field cropped down, so that the total number of characters is always 28, what I thought was the width of my listbox. I realised when I debugged though, that the listbox was docked and grew or shrank depending on the size of the screen.
Is there a way to determine how many fixed width characters will fit in a control, at run time?
Determine Windows Build Number Using C#?
Feb 25, 2011How to determine windows build number using vb.net or c#? I do not want to use win32 API.
View 3 RepliesDetermine Number Of Tabs In Tabcontrol In 'If' Statement?
Feb 19, 2012I am writing a tabbed webbrower program and i am trying to close the program when all tabs have been closed using ctrl+w. So far i have used the following code but it has errors as tabcount is readonly:If TabControl1.TabCount.Equals(0) then Me.Close() End If
View 15 RepliesDetermine Which Number Is Larger , Smaller - Equal?
Mar 24, 2010I've to write this application in which i've two text boxes and of those, i've to determine which number is smaller or larger or if both are equal.
View 13 RepliesTwo Labels To Determine Smallest And Largest Number
Apr 8, 2009I have 2 labels. One needs to show me the lowest number of the 10 in my rich text box and the other needs to show me the largest.
Public Class Form1
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Me.Close()
End Sub
[Code] .....
Determine Length Of Array From Number Of Items Entered
Nov 15, 2009I am trying to program the hamming code in vb... theoretically i understand and know how to do everything, first problem I've encountered is dynamic arrays in vb.net ... is it possible to determine the length of an array from the number of items entered in it, since I have no means of figuring out an exact number or length prior to several mathematical function which outcome will be the data .. directly saved to the array !!
View 4 RepliesDetermine Number Of Fields And Records In Fixed Width File?
Feb 1, 2009I need to import a big fixed width text data file into SQL server. Before importing, how to determine how many fields and records in the file?
View 11 RepliesDisplay The Number Of Lines?
Nov 2, 2010Ive a richtextbox and want to display the number of lines it has in a separate RTB just like:
1 Hello
2 From
3 VB
I did it using the code:
<pre lang="x-vbnet">Private Sub text_RTB_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles text_RTB.TextChanged
numbering_RTB.Text = ""
[Code]....
Get Number Of Label Lines?
Sep 7, 2007I have a long text in label control (AutoSize=False).
I want to get number of lines.
How can I do it?
Get Number Of Lines From File?
May 23, 2012how or what to do but I am trying to get data from a file. The file contains multiple lines, each lines represents a customer. the line is broken in this parts Quotealeks-1234 a street-CDA-ID-12345 then that is broken in name address city state(combo box)zip
Public Sub ReadFromFile()
Using fs As New FileStream("customer.txt", FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
[Code]....
that is the code I am using to get each field in it's array. I am not quite sure how to get the number of lines so I can make it work properly. I also attached the whole project.
Number Lines In A RichTextBox?
Aug 20, 2010I am working on a Programming notepad in VB.net, How would i add Line Numbers into a RichTextBox? An Example would be like in Notepade ++. Would i need to make a Class for it? I already have a class witch makes a richtextbox that when you type a word like "echo" it will change the color. Can i edit this to make the numbers? [code]
View 1 RepliesASP.NET Make Number Of Lines Editable?
Apr 14, 2011I have a number of lines of text on an .aspx page that I want a user to be able to edit, I am not storing this text/information anywhere in the database. I just want it to be information that is displayed to the user but can be editable, so the user can view the text and if there is a mistake or want to make a change they can do this by editing it.
I have seen that if you display data in a label and put a textbox beside it then, the textbox can move into the place of the label - I have done this for other text on the page however that method would not fit for this purpose because I require this edit of text to be for a number of lines.
Count Number Of Lines In A Text?
Mar 23, 2010I need a TextBox to resize depending on the number of lines entered by the user, I note that TextBoxes has no AutoSize Property.
Is there a way to Count the number of Lines in a Text?
Count The Number Of Commented Lines?
Oct 14, 2011I have a folder which consists of 13 files. I want if a file contains human readable code than count the number of commented lines, line of code, and otherwise ignore the file.
View 4 RepliesHow To Calculate Number Of Lines In A Text Box
Feb 27, 2009I am hoping that someone can help me with a problem I've got at the moment using Compact Framework.Net 2 SP 2.At the moment I have a UI with a series of text boxes and each textbox displays the contents of a database field. These are shown one beneath another with a scroll bar on the right hand side of the form. Each textbox has a set width which might.I would like to adjust the height each text box based on the number of lines it is holding, the font size and the font in order to avoid using scroll bars on each textbox.[code]
View 3 RepliesHow To Only Display Certain Lines Depending On N Number
Mar 26, 2010I have read a text file into a textbox. The text looks like this (small snippet):
N08861 A1 P 0 A2 P 0 A3 P 0
N08862 P 0
N08870 P 0
N08900 P 00000001
What I want to do is to only display certain lines - this depends on the N number shown above.
E.G. I want the text box the display line N5000 upto N6000.