Retrieving strings from a serial port with ReadLine works fine as long as the line ends with a linefeed chr$(10).However if no more strings are available to be read, Do Loop or For Next hang up waiting for the linefeed which never occurs.I believe using chr$(0) in place of linefeed would still work with strings ending with a linefeed..Just that the linefeed would be output.I have the complete MSDN Library.
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The end of the text document my application is reading is denoted by a character that I cant identify, copy or paste. I attached an image of it so you can see. I have no control over the formatting of the document so I can't change the character. During debugging it shows the same character as shown in the picture, but if I hit the little tack next to where the variable shows then it changes to "f". However, if I try to see if the variable equals "f" it returns false.
View 3 RepliesI need to read Line by Line from a .txt file stored on c:ext.txt. the file has 10 lines which must be read one at the time, random and never the same line. Once this reaches the then line a messagebox should display done and clear the program. What I am stuck is the random part and how to display the random line.
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I am looping through a text file and reading and then parsing each line.. then, inserting into a sql server. The problem is, I am getting every other line. Any thoughts? I read another post on here that is similar and it says that that person was calling the ReadLine twice... which makes sense. I just cannot spot where it is happening.
Private Sub btnUpdateRSR_Click(sender As System.Object, e As System.EventArgs) Handles btnUpdateRSR.Click
' Get RSR File
lblStatus.Text = "Getting RSR File"
Application.DoEvents()
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I have a text file that I'm reading from.It has basic data and then I get to a field that has
City , State
I was trying to use
'Original Code
'strCountyStateIN(intCount) = txtFileRead.ReadLine()
'Trying to Split out County and State
txtFileRead.ReadLine().Split(CChar(","))
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I'm storing the data to an array and everything else works great. I just havent been able to split the county and state?
Am I being dense here? StreamReader.ReadLine states that: A line is defined as a sequence of characters followed by a line feed (" "), a carriage return (" ") or a carriage return immediately followed by a line feed (" ")
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I am trying to error check a piece of code
This is from my previous thread which 'Codeoder' help me on..
[URL]
I have a RTB which I import with a set of 7 or 9 didit numbers, 7 for Staff and 9 for Students. e.g. Staff numbers
0628189
0628191
0629991
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i am trying to write code to assign values from a line of a text file to variables in my program. the problem is that I don't need all the values written in the text file assigned to variables. So. Basically I want to know if there is a way to use "ReadLine" to access specific lines in a text file.
View 1 Repliesi have a text file which contain 3 lines "ha 0.21, hb 0.35, hc 0.44" I want to read the file and get the second character of every line, which are "a, b and c" and assign them to array. My code below able to read the file but only able to get the last line of text. May i know how to do to get every second character and assign to array?
Dim FILE_NAME As String = "C:Test.txt"
Dim TextLine As String
If System.IO.File.Exists(FILE_NAME) = True Then
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Why must the line continuation character be the last one on the line? Is there a technical reason for this or is this a usual Microsoft "feature"?
In other basic dialects you can add a comment after it, but not in VB.net, so I'm curious as to why Microsoft decided to not allow comments on these lines.
i would like to add a character or characters, at the end of every line in a richtextbox..for example, add this ";o)" to the end of every line.[code]
View 5 RepliesI am kind of new to Visual Basic and I got stuck doing a sample Windows Form program. I was trying to write a String into a text file. But I just couldnt get the command for the new line character whereby each time, the new String is concatenated to the next line instead of the same line. I know that in C the new line character is used. But what about in Visual Basic?
View 7 RepliesI need to know how to get a characters Line position in VB 2005..I search for string of text throught a RichTextBox and get outputs like 4086 and 16010 for the character postion. I need to know what lines of the document these fall on, so that I can properly copy those lines.
View 8 RepliesI have a text file and i want to remove all the last character in each line how could i do that?
View 3 RepliesI have a long line of text to write to the console so I end up with the following code. Mind you, the IDE (VB 2010 Express) error list gives no error when the code is like this, it even build without error. However when the console runs the debugger gives me an exeption error.
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I have some text in a richtextbox and I would like there to be a new line after every
View 1 RepliesHere is an example of a line:
H e l l o t h e r e !
I want to delete every other character so that it looks like this:
Hello there!
I want to get the last index of new line character in the richtextbox
View 1 RepliesI'm trying to find a character in a specific character space, on a particular line, for instance:
Line 2, Charspace (or column) 75.
After I find that I would be writing a read and replace to change that character.
Can someone point me in the direction on how to specify this location?
I am creating an interface to control my av receiver, so far I can control it but now I want to receive the feedback from it and process it. The feed back I get is in the form of "!1PWR00"[End of line]. I am having a problem with the end of line part, what is end of line in VB? If I display the feed back in a message box it shows the end of line as a little arrow pointing to the right, how can I look for this end of line character in the datareceived in my code? CR is easy as it is simply vbCR. So what do I use for end of line?
View 5 RepliesCurrently I have the code:textbox1.text = textbox1.text.insert(textbox1.getfirstcharIndexFromCurrentLine(),";")But this means it has to reload the entire textbox, which with large files is noticeable slow.What are the alternatives?
View 3 RepliesI am making a program that loads files into a ListBox, loops through each one, and if the last line of the file begins with "@", it removes that last line.Now, I am not really sure how to do this.Would I use LineReader?How would I check the first character?
View 4 Repliesi want that when the user presses enter (ctrl+enter) in a datagridview cell the pilcrow sign will be inserted.is there any automated way to do this or do i have to catch the event and substitute the new line character with the ascii pilcrow sign ?
View 3 RepliesI have a program to read line by line from text file. [code]There is run time error while TextLine data has ' or "May I know how to read the data with ' or " character?
View 6 RepliesI get the following error:
Line 1: Incorrect syntax near ','. Unclosed quotation mark before the character string ' )'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException
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Dim hex = "41"
Dim text As New System.Text.StringBuilder
For i As Integer = 0 To hex.Length - 2 Step 2
text.Append(Chr(Convert.ToByte(hex.Substring(i, 2), 16)))
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but yet this fails.. (the output isn't itself in a new line) what's the explanation for that?From what I know, doesn't System.Diagnostics.Debug.Writeline does something which looks like this:
System.Diagnostics.Debug.Write(input)
System.Diagnostics.Debug.Write("
")
so regardless of my input it should always have a newline char even if there is a terminating 00 char in my input?
I'm Vis15. I am trying to create this simple function that changes one character to multiple characters multiple times. For example if I have a string "abcde" I want the end result to be something like:
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I am trying to create this simple function that changes one character to multiple characters multiple times. For example if I have a string "abcde" I want the end result to be something like:
aXcde
aYcde
aZcde
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My character moves with the keyboard arrows but he keeps facing the screen, my question is:How can i make the character change direction (by using different sprite positions), like when I press the right keyboard arrow my character faces right and when I walk right my character's legs move?
View 1 RepliesI am trying to create this simple function that changes one character to multiple characters multiple times. For example if I have a string "abcde" I want the end result to be something like:
aXcde
aYcde
aZcde
[Code]....
