Forms :: Streamwriter Writes To A Specified Line#?
Sep 30, 2009
I am needing to write to a "rtf" file, and always insert my text on line 3 of either a new or an existing rtf document.I'm familiar with vb, but have not done much with the system.io functions. I have been testing several examples from the internet using the streamreader and streamwriter but still having issues finding a way to "insert text" on a specified line number. My questions:
1)I will always need to write on line #3, do I need to read all lines as this example shows "lines.AddRange(System.IO.File.ReadAllLines("C :/test/myrtffile.rtf"))"
[code]....
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Jan 21, 2009
i am using StreamWriter to write a file! I need write always in a new line! How i make this?
Dim f As StreamWriter
f = New StreamWriter(lblDirID.Text & "" & lblId.Text & ".dat", True)
f.WriteLine("test")
f.Close()
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Aug 25, 2006
I have a "Form" with:
1- List Box
1- TextBox
3- Button
1- OpenFileDialog
1- SaveFileDialog
I want that clicking the btn1 it shows the OpenFileDialog and read file that it has got this structure: SKI10 1 71 0 0 18 101 19 0 29 101 30 0 40 101 41 0 50 101 51 0 62 101 63 0 81 101 82 0 95 101 2 0 0 95 165 3 0 1072 01 4 2 1 93 15
I want that it reads all Line of the File and it add an Item in ListBox for line.For example the first Item of the ListBox in this case is
SKI1
And the 2th Item is in this case.
0 1 7
I want using the StreamReader classes.And i want that when i click an Item of the ListBox it shows the Text in the TextBox and I can edit the Line and that clicking antoher button the Item will come updated with new Text of the TextBox.I have also another button for saving the Mod.I can use the AppendText and it create a new file writing ListBox1.Items line for line.
If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then Dim file_esistenteD As StreamWriter[code].....
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May 18, 2011
I have the following which searches the domain and lists out each user. I am writing them to a text file. The problem is each user name as it is found overwrites the other one.
I need them listed one under the other. Have I misplaced the Using statement?
Dim de As New DirectoryEntry()
'Name place to write file to
Dim strFile As String = "C:MyFile.txt"
[Code]......
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Sep 17, 2010
I need to update the students score with a new score but I cant get it to write to the line that the students current score it at. It just deletes the whole text.
Alex,letmein,0
David,qwerty1,0
John,password,0
[Code].....
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Jun 4, 2010
Public Sub LecteurLogin()
'// Cr�ation du r�pertoire syst�me de CYS2011
Dim dir2 As String = "C:FicheStatsLogin"
If Not IO.Directory.Exists(dir2) Then
[code]....
Basically this is a function I call during the program booting and it creates the necessary directory and also the LOGIN.CYS file empty... then later data can be added.My issue is that it keeps adding a line to the .cys (which is a .txt file) but I just want VB to create a plain text file with no content inside...
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Jun 24, 2011
I am coming across a lot of odd and annoying problems in this program and have almost had enough lol.
I cannot figure this one out for the life of me. I have used streamwriter a hell of alot of times and never once experienced this. But basically I have a string array and I need to write the entire array to a text file with a new line for each array item. So I have gone ahead and done this:
[Code]...
However the outcome is the text file only contains 1 line and that line is the last item in the array yet I know the array has got at least 50 items in it.
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May 15, 2012
I am writing each line to a text file:
Dim objWriter As New System.IO.StreamWriter(filename)
For Each x In tofile
objWriter.WriteLine(x)
Next
objWriter.Close()
Which works perfectly the only problem is is that when its finished it writes a blank line on the end of the text file which I don't want.
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Jun 28, 2010
I have the following code, which I run everytime I want to add a new line to my text file, but it is deleting the previous data in the text file every time I do it.
Dim stFilePath As String = "C:file.txt"
If File.Exists(stFilePath) Then
Else
File.CreateText(stFilePath)
End If
Dim ioFile As New StreamWriter(stFilePath)
ioFile.WriteLine("{0}: {1}", DateTime.Now, "test message")
ioFile.Close()
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Sep 28, 2009
I'm testing a small program that can read & write to an rtf file. Examples I have found work fine, although I have two questions:
1)If I need to ALWAYS write to line number 9 of an existing RTF file, do I need to "read" 9 times or can I immediately position myself to line number 9. I have found character manipulation but can't seem to find what I need with positioning to a particular line number.
2)BOLD text: I have found examples where I should be able to format my text, such as
MyFile.WriteLine ""
MyFile.WriteLine Text
MyFile.WriteLine "0"
but when doing this, it does not "bold" my text, but actually prints the text exactly as shown. I'm looking for information/links that I can "bold" "Italicize" text. Code is written in VS2005.
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Apr 1, 2009
Not sure what to use or how to use it. But I would like either streamreader or streamwriter to ignore a line depending on it contents.
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Apr 21, 2010
I am taking in two html files and creating one out of them. To do this I am opening the first html file and not writing out the closing </body> and </html> tag and opening the second file and not writing out the corresponding opening tags, as well as the <style></style>section. I start a streamwriter, and write the lines out to it, and then close the streamwriter. My problem is that the output file is filled with strange characters. I've tried opening the streamwriter with different character sets as the third parm, but all this does is change the characters to different strange characters.It says charset=windows-1252 at the tops of the input files (and the output files for that matter - since I'm just reading stuff in and writing it out - with the exceptions mentioned above).Questions;First, do you think I am properly approaching appending two .htm files together?Second, how can I eliminate these strange characters.
[code]...
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Apr 10, 2011
i need help with stream writer, i can get it read lines and stuff like that but now i need Streamwriter to write to a colour.txt file (already populated with data) and insert a line that isn't already in the file, into alph order eg combobox reads and displays list from txt file.
their is a colour thats isn't in the text file, so i would like it to take the colour from the combobox that was typed in by the user and place it into the colour.txt file in alphabetical order (these are car colours so their are 100's and 1000's per manufacturer, its not as basic as i want red blue black lol) i was able to find loads of data about streamreader but not so much about stream writer
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Nov 17, 2009
I have a multiline textbox from which I would like to read each individual line and store it in an array. I don't want to store each carriage return, I want the line itself.I have been using this, but it only records lines followed by carriage returns.
Dim arra() = txtReceipt.Text.Split(Environment.NewLine)
Here is a visual example: [URL]From that top right textbox, I would want arra(0) to be "Type some stuff here (and hit the return and" and arra(1) to be "tab keys...)"
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Aug 2, 2010
I was playing a game recently and saw that they could use args in the shortcut, and I decided to try to impliment this into my application...so far, I got: (runs this sub on load)
Sub startup_args()
If Environment.GetCommandLineArgs.Contains("+game") Then
Dim path As Array = Environment.GetCommandLineArgs
[code]....
just to see what it returns, but the application crashes. I also tried path.tostring(), but that didn't work. When I did:
If Evnironment.GetCommandLineArgs.Contains("+game") Then
Dim path as string = Environment.GetCommandLineArgs.tostring
MsgBox(path)
[code]....
but that returned the value "SString.Array[]"...
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Sep 6, 2009
How to copy RichTextBox to an array line-by-line and back to another RTB From that array?
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Oct 16, 2009
Let me explain the functions and what they do first.This function writes a key to a specified file:
Public Shared Sub WriteDatabaseKey(ByVal section As String, ByVal keyname As String, ByVal entrystring As String, ByVal filename As String, ByVal filepath As String)
[code]...
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Jan 7, 2011
I am using:
VB
My.Computer.FileSystem.WriteAllText("J: est.txt", "Text here", True)
to write text files and such. How would I do quotations in that text..say if I wanted to put in
Text Text "More Text" Text.for it to write.
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Mar 4, 2010
I have RTB witch I can edit with text by using .
RichTextBox1.text = RichTextBox1.text & "stuff" & VbcrLf
Great but I loose any editing to colour/font I may of done previously. Is there a way of just adding a new line. I am thinking along the lines of finding the last character then adding my new line.
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May 3, 2011
I have a forms app that contains a few forms. My task is to make it run invisibly when called from the command line with arguments.I have defined a Sub Main in a module and made it the startup item. I have an if/then/else that looks at args.length and if it equals 0 then I load the form and run the app normally. But how do I handle things when args are passed? I still need access to all the functions defined in my main form. Can I load the form invisibly and still "use" it?
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Feb 21, 2009
Im trying to buffer data being written to a device on a com port. The equipment attached to it does not use any form of flow contol and if you write to much information to quickly it falls over. So I have had the following thoughts.
I would create a list of strings and when I wanted to write data to the com Port I would just add the string to the list. I would then have a Sub running its own thread to step through the list, write the string to the com port ,pause a fixed amount of time, remove string from list and repeat until the list is empty. Then keep looping the above.
Code I have so far is below
Private MsgList as new List (of string)
Private sub MsgPump ()
Do
[Code]....
THis does work but If I add strings to MsgList to quickly it throws an exception.
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Oct 30, 2011
I want to create a tiny program that writes itself. VB.
Basically, I start it off with the smallest coding possible. Then, I want it to be able to automatically generate buttons, forms, labels by itself. I want it to compile another version of itself, and to test if it worked. I want it to in someway to be able to ask the new application if it works, and if it does to close both and to run the newer variation, then to repeat this process. I guess this is kind of like a self-manifesting application that keeps growing; an AI perhaps. Is this possible?
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Mar 19, 2012
i have this message program that writes text to a .txt file when i push a button and a filesystemwatcher that checks for when that file is changed and when it is it set the text of another textbox in my program to the text of the file. in the text i transport over there are usernames, i want the program to check to see if textbox contains that text then i want it to highlight or color or change the font of that text, or username. but i want it to just change the username's attributes not the whole text box,
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Sep 22, 2011
trying to write to c:windowssystem32 on a windows 7 x64 machine, but the application keeps writing to c:windowssyswow64 instead. I have heard of windows interpreting commands and modifying them to be what microsoft "thinks" you are trying to do.when dealing with 32 bit apps running on a 64 bit os.the line of code im using is:
System.IO.File.WriteAllBytes("C:WindowsSystem32dbcon9x64TEST.dll", My.Resources.dbcon9X64)
the issue is I need to write files to both c:windowssystem32 and c:windowssyswow64 ....the files need to have the same name.
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Feb 17, 2010
I'm launching my application at the end of installation using custom installer class - Sub oncommited.I'm using vb 2005 setup project.The application main form load event need to read/write values from HKCUSoftwareMyApp registry.The problem is that when the application is launched at the end of installation ,it reads/writes from HKEY_Users.DefaultSoftwareMyApp instead of HKCU though I've written
My .Computer.Registry.CurrentUser.CreateSubKey(RegKey).GetValue("Name","")
When the application is launched through Program files shortcut,it reads/writes properly.I need to exit the application depending on registry values.
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Feb 3, 2012
My application writes to the event log if there is an error or other status updates.
The application checks to see if there is an event source named "applicationName"and if not, it creates the source (see code below).
This works fine if the user is an administrator.
If the user is not an administrator, an error is thrown when SourceExists is called:
{"The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security."}
In my environment, the typical user is NOT an admin. Therefore, I cannot use the event log in my application.
Is there a way around this, or is the event log effectively useless for distributed applications?
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Sep 13, 2011
I want to develop a text editor for writes articles and I want that the user can add hyperlink on any text. How can I do this?
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Mar 23, 2010
Im currently looking fora solution to load/delete/write to a csv file. I tried to save my .txt into .csv but when its loaded into excel it writes everything in column
A1: John Freeman,Apartment 1 Street 2,New York with commas...
I want to put it in column A1: John Freeman B1: Apartment 1 Street 2 C1: New York
What am I missing? This cvs seems like the thing i want to work with.I testet it with writing my user registration form to .csv and its writing it perfectly into excel when i use & vbCrLf & between the text inputs, but will be listing them vertical and not horizontal as i want them to be.Also i don't know how to clear my csv document now and how to call the csv file to a table or a textbox like i did with my .txt file.
[code]...
readalltext can't read .csv so the code should be like?
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May 25, 2007
I have a program that currently takes data and writes it to a MS Excel spreadsheet. (automatically opens the program, creates the cells, and fills them with data)
I would like to add an additional feature to my program that offers support for OpenOffice.org's 'Calc' spreadsheet program. (so users without MS Excel can use the application) So I am basically asking if anyone knows how to automate OpenOffice 'Calc' from VB.net. (I am using Visual Studio 2005)
I have searched on the OpenOffice forums but no one seems to know the vb.net code for this. So I was wondering if anyone here has done this, or would know how to do this.
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Jul 4, 2010
how can I let VB.Net writes an excel 2007 file? For example, the data in a TextBox will be written to the excel file every 30 seconds.The enviroment is VS2008, .Net 3.5.I've just started VB for one month, so please give me a piece of code to help me understand. I tried to find the solution on the Internet, but none of the codes worked for me, some people mentioned import "Microsoft.Office.Interop" in the code, but if do that in my code, VS said that "Namespace or type in the Imports 'Microsoft.Office.Interop' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases."
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