Reading An Unknown Character From Text Document (TextFieldParser/.readline)?
Oct 18, 2011
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.
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Jan 8, 2010
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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May 10, 2010
Is this class normally slow or maybe there is something in my process making it slow.I have to import 170,000 rows of data from a fixed length text file into a SQL table. It takes about 2 minutes in a DTS package on SQL server 2000. But we are migrating to a SQL 2008 server and since this code has several manual steps and does not manipulate the data I thought it would be easier to use the TextFieldParser object to handle reading in the data.
Here is the code:
CODE:
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May 2, 2012
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()
[code]....
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Feb 16, 2011
I use this code to read in a text file:
Quote:
Dim fileName As String = fileloc
Using reader As New System.IO.StreamReader(fileName)
While Not reader.ReadLine() Is Nothing
[code]....
THe problem is it reads in every other line.I assume its because its reading line one in the 'while' then the next line being stored during the loop....
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Feb 18, 2011
I'm reading a xml document via a text reader, this is my code
[Code]...
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Jul 8, 2009
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 (" ")
[Code]...
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Apr 1, 2011
I have a VB2010 project where I need to read a tab delimited 50MB file using Microsoft.VisualBasic.FileIO.TextFieldParser. This technique works fine until the reader encounters a Unicode character upon which it inserts the little square thingy. The obvious choice is to change the encoding of the reader to Unicode from the default. This would probably work fine but for most files but this one is fairly large and I get the error TextFieldParser is unable to complete the read operation because maximum buffer size has been exceeded. By the way this file can be read completely without the Unicode option. Making the file smaller or breaking it up really isn't an option. Is is possible to increase the buffer size or is there another way to read this data that places the data in fields like the textparser and allows unicode characters?
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Mar 21, 2012
I have to work with network program with vb 2010. I'm trying to show the ReadLine stream in label text but it won't show.
Dim tcpCli As TcpClient = tcpList.AcceptTcpClient() 'claiming tcp listener to accept the tcp client
Dim ns As NetworkStream = tcpCli.GetStream ' assign ns as network stream and assign as client to get nw stream
[Code]....
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Mar 11, 2010
When I read a text file as the code below the first line returns as nothing. I checked the text file and it contains 3 lines before the read. After the read the first line is blank the following 2 lines have values.
[Code]...
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Aug 25, 2010
I am learning to use TextFieldParser to read a fixed width text data file. It works great. I copied code below. Question: How to stop at the end of each line because I need to add some code?
Using tf As New TextFieldParser(fileName)
tf.TextFieldType = FileIO.FieldType.FixedWidth
tf.SetFieldWidths(60, 30, 20) //three columns
[Code].....
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Sep 13, 2008
When the form load I needed to create a text file into "C:\Program Files\User\User.text" But if the file exist it will read line1, line 2 and line3 of the text in different textboxes Then if I click save, it will write textbox 1 to line 1, textbox2 to line 2 and textbox3 to line 3.How do I do it?
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Jan 14, 2011
Private Sub runExe()
Dim myProcess As New Process()
Dim myProcessStartInfo As New ProcessStartInfo("mkclean", " --optimize """ & txtSrcFile.Text & """ """ & txtSaveFile.Text & """")
[Code]....
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Sep 15, 2010
I am trying to use Microsoft.VisualBasic.FileIO.TextFieldParser for parsing any format of tab delimited text file that user may have and show the data in web page in tabular fashion.I have sample tsv file with text qualifiers such as quotes saved in different encoding styles for different platforms such as pc, unix, mac saved using textpad. and I am trying to parse these using TextFieldParser. It works for all PC files but fails for mac.
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Jun 1, 2010
I'm trying to import an xml file into vb.net XmlDocument but am getting the error:'.', hexadecimal value 0x00, is an invalid character. Line 94, position 1.I'm wondering if there is a way to replace the hex character 0x00The following are lines 92,93,94 the file ends on line 94
92 | </request>
93 |</rpc> <!-- XML Finishes here -->
94 |
[code]....
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Aug 22, 2010
I need a bit of advice. I am working on my project with the listbox. I know how to create a source to get the strings from the text file using ReadLine method, but I have no idea how to split the strings in the text file by on the third commas and ignore the other strings while select with the matched strings on the listbox for each row.Here it is an example listbox Here it is an example items on the listbox
random item 1
random item 2
random item 3
random item 4
random item 5
And here it is an example text file.
example strings one, any strings 1, any random strings 1, other strings 1, final end of strings 1
example strings two, any strings 2, any random strings 2, other strings 2, final end of strings 2
example strings three, any strings 3, any random strings 3, other strings 3, final end of strings 3
example strings four, any strings 4, any random strings 4, other strings 4, final end of strings 4
example strings five, any strings 5, any random strings 5, other strings 5, final end of strings 5
The listbox is display the list of an example items, so if I select the "random item 1" item on the listbox, it read the strings through in the text file on the first line to get the strings on the third commas in the same line which it is (any random strings 1) to split it while ignore the other strings (other strings 1, final end of strings 1) that come fourth and fifth commas. So, if I select the "random item 2" item on the listbox, it read the the strings through in the text file on the second line to get the strings on the third commas in the same line which it is (any random strings 2) to split it while ignore the other strings (other strings 2, final end of strings 2) that come fourth and fifth commas and so on...That is what I am trying to achieve by select the each listbox item to get the correct strings for each line in the text file that come on the third commas while to ignore the other strings.
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Oct 22, 2009
Using Access 2003 and VB code, I have created a form with a number of labels. The labels will display an employee's names. I have named the labels name1, name2, name3...etc. Using an ADO data set and DCount I have determined the number of names in an Access table (the number of names can vary). What I want to do is for each record in succession to pick the first name and surname from the data set , combine them into a full name (this part has been successful), and then set the full name into the label caption in succession. Example: full name 1 into name1, full name 2 into name2, full name 3 into name3... until all names appear as labels on the form.
I created a counter to and a variable to increment the label number but when I address the caption property of the variable containing the new label (e.g. name1, name2..etc.) it throws an errer at runtime. Here is the code:
[Code]....
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Nov 29, 2009
I have a text file in this format
Date TimeTickerSectorOpenHighLowCloseVolumeAsk AskVolBid Bid VolMidSpread Fact1
200802069:30:00AAPL45130.88130.88130.88130.88294028130.93850130.92700130.9250.500000
200802069:30:05AAPL45130.92130.95130.82130.9417294130.95700130.94100130.945-0.200000
[CODE]...
Basically I would like to read in this file line by line and separate every every field into a custom variable and then do some processing. So, I would read in the first record and put the data into these fields
date
time
ticker
sector
open
high
ETC
I started coding this using a TEST file that only had two fields name and a number
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Dim FILE_NAME As String = "C:aaple2.txt"
[CODE]...
I got an unhandled exception on this line: mNum = objReader.ReadLine
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Nov 11, 2009
I want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
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May 9, 2010
My form has a texbox where user enters an ID. IDmust be4 chracters in length andof the form: begins with either "E" or "e" and the next 3 chracters cannot be "all characters".
Example:
E102 - corect
e3ff - correct
[code].....
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Nov 11, 2009
I want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
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Aug 19, 2009
I have a word (2003) document containing many Activex textboxes which are used to apply a character limit to the users input. Sometimes users want to paste data into the textbox from another source ks fine, but if they try to do it via the Edit menu then the textbox is deleted and replaced with the pasted text
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Mar 30, 2010
I'm trying to read a XML file, but only certain values.So my XML file is built from the result of a SQL query.[code]The probelm is the loop starts with line 1, good start.But then it will go to line one again, then line 2, line 2 again and so on.When it hits line 5, the first value I need to pull, it then stops.And thats how it is written, so that makes sence.I need to loop through this document, grab the certain values I need, and move on.
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Jan 21, 2009
I have a program that is saving information into and XML file that is later read from to continue the users progress. I am having trouble getting the reader to work without an error This is the code that I am having trouble with and below is the error.
[Code]....
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Feb 22, 2010
I want to be able to read my XML document but I am a little lost how to. I cant really post my XML on here because it is just trying to use markup. Anyways, I have a root node that surrounds the whole object i want to read. From there, there are a few elements. 2 of those elements can have multiple instances. There will only be one object i need to read from the XML document.
[Code]...
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Oct 15, 2011
I have an xml file document and I am trying to display the xml contents in a datagridview.what am I doing wrong? I had it working when I pull one column at a time
[Code]...
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Oct 4, 2011
This is my Connection String :
cn.Open("Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" & PathtoTextFile & ";" + "Extended Properties=""text;HDR=YES;FMT=Delimited""")
[code].....
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Mar 4, 2009
I am reading datas from MSWord Document. I know how to read the file. the sample text in my MSword. C# code review checklist. My current client uses PSP extensively, so I've been putting together a checklist for reviewing C# code for use on our new project.
1.Are exceptions used to indicate error rather than returning status or error codes?
2.Are all classes and public methods commented with .NET style comments? Note that <summary> comments should discuss the "what" of public methods. Discussion of "how" should be in <remarks> blocks or in-line with the code in question?
3.Are method arguments validated and rejected with an exception if they are invalid?
4.Are Debug.Asserts used to verify assumptions about the functioning of the code? Comments like, "j will be positive" should be rewritten as Asserts.
5.Do classes that should not be instantiated have a private constructor?
6.Are classes declared as value types only infrequently used as method parameters, returned from methods or stored in Collections?
7.Are classes, methods and events that are specific to an assembly marked as internal?
8.Are singletons that may be accessed by multiple threads instantiated correctly?
9.Are methods that must be overriden by derived classes marked as abstract?
10.Are classes that should not be overriden marked as sealed?
11.Is "as" used for possibly incorrect downcasts?
12.Do classes override ToString instead of defining a Dump method for outputting the object's state?
so in this i need to read the question only. but when i am reading i am getting the hgeader text also.
Following is my code.
dt.Columns.Add("CheckList", typeof(System.String));
//Word.Application app = new Word.ApplicationClass();
object nullobj = System.Reflection.Missing.Value;
//object file = @"D:dbWordappCheckList.doc";
[CODE]..........
So using this code i can able to read the doc and fill the values in datatable.but i need to fetch the questions only. sor example in my doc sample 1st question is filling up as follows. C# code review checklist. My current client uses PSP extensively, so I've been putting together a checklist for reviewing C# code for use on our new project.
1.Are exceptions used to indicate error rather than returning status or error codes but i need
1.Are exceptions used to indicate error rather than returning status or error codes .header text i don't want. so how could i omit the headertext.
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May 23, 2012
I have published xml document through web service like this
<WebMethod()> _
Public Function HelloWorld() As XmlDocument
Dim xmlDoc As New XmlDocument
[code]....
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Sep 1, 2011
I'm Alan and I'm writing a little program (beginner), but I'm stuck and I can't get any further. So I hope one of you guys can help me solve following problem.Let me explain what I'm making, so it can give you all a better perspective.
For a this project I'm receiving data via the RS232 communication port. So basically I receive bytes. These bytes are converted to a string. So for example I receive this:"BAA" this is good because I can get the correct decimal value for "B"(66) and "A"(65) using the command asc("A") in .NET.but sometimes I receive a character that exceeds the 0-127 limit for example ""(128) (please see [URL]..But now when I try to get the decimal value of "" I get 63 instead of 128. I searched the Internet and forums for an answer but I didn't find one that fits my problem.
So if it's possible, can one of you code experts explain me how to fix this problem ? It would help me a lot. I hope I described my problem clearly, but if there are some questions,
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