VS 2008 Finding And Writing To A String In A Text File?
Jul 24, 2009
Well I basically know how to read a text file, replace text then write to one. how to append text after a specified string (ie, insert text at a specified line, removing the text after a string in a line and changing it without altering other lines, etc). Can someone please tell me how I would go about adding a string after a certain string in a text file? For example:
In a text file I have users add a folder using the folderbrowserdialog users then push add which appends the text with lets say they selected downloads
Downloadsname=Downloads downloadspath=C:documents and settingsJamesDesktop
how can I make it so that when they push a button it seraches for downloadsname then after the = is the text to use as a string and do the same with downloadspath
I have written a program which reads the text from the text file cleans it for some specific letters or phrases and then saves it in another text file. I am having a problem in rewriting the processed or cleaned data (after it has removed some phrases and characters)onto writing the file.
I have successfully written the text on the file except one problem. In each loop when each string is cleaned and is written on the text file, it overwrites the previous string. What I want is that it should write in the next line or in the same line.
My code is given below: Private Sub btnopen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnopen.Click FileOpen.Title = "Please select the file"
[Code]...
how can I write the text in the new line and avoid overwriting of text in my text file.
I'm outputting a number of variables to a text file and each field needs to be in a specific place.For example:I have a string that is varying in length, but will never be more than 5 characters. The string has to end on the 8th character of the line. Is there a way to write the string to ensure that the string ends at a specific place on the line, regardless of the length?
writing a text file, If LineData(1) = "ABCDE" then I need the file to look like this when the text file is opened:$mov "ABCD" D10 No other quotes or spaces are allowed. Now I have opening and closing quotes on the entire line no quotes on the ABCD section
DRegister = 10 FileName = "C:PLC Print2.txt" FileOpen(ff, FileName, OpenMode.Output) For K = 1 To I
i read a text file and i need to overwrite the first line of the text file this is my code
Private Sub readProvisionOrder() 'Loads ProvisionOrder from text file Dim sFileName As String ' name of file in the directory Dim sr_ProductsFile As StreamReader 'file reading variable
i have a string array that i want to output to a text file. the array size is 10000. i fill the array starting from 0 with some strings. at the end, i only want to show the array from index 256 to the last array that is not empty (for eg. if the array is filled with data from 0 to 2000, i only want the text file to show the data from 256 to 2000 and ignore the remaining strings). Is there any function to do this?t i use is shown below
Dim myArray(10000) as string Dim strArray As New System.IO.StreamWriter("c:List.txt") strArray.WriteLine("{0,10}{1,30}", "Index", "Symbol")
I'm trying to make a program that can export my schedule into a CSV file to upload on to google calender.I need to extract some text within a textbox control. I'll show you an example.This is the text in the textbox:
I have a binary file. If I look at it with a hex editor, the first values are:208, 207, 17, 224, 161, 177, 26, 225, 0, 0, 0, ... etc.It has a length of 330240 bytes I have tried to open it and read it into a string so I can manipulate it and write it back. No matter what I use, I either don't get the correct number of bytes or the values in the string are incorrect. The most common error results in the first values being: 63, 63, 17, 63, 63, 26, 0, 0, 0 .... etc.It is interesting that it appears that any value > 63 becomes 63.
I get the 2nd values by a simple loop:
For lnx = 0 To 99 Debug.Write(Asc(line.Substring(lnx, 1))) Next
I have tried a whole number of ways to read in the file, including filestream, My.Computer.FileSystem.ReadAllText, File.io.readAllLines, etc.All either give me a string length of about 324000 (not sure why) or, if they do, don't have the correct values. Yes, I have tried various encoding options.
I need to find a string (sort of like: "D" & Chr(0) + "L" & Chr(0) + "S" & Chr(0)... ) so I can then replace that portion of the string with a new value, then write out the file.I use the ".indexOf" to find the data in the string.Why can't I load the file into a string? Or, do you know of an easy way to find some text (similar to above) in a file and then replace the next x number of bytes with a new value and close the file?
G:DevelopmentDOT NET DevColony_4ImagesBattenhallAve_Plan.bmpand i want to find and return the value after the last '' for example in the string above i would want to return:BattenhallAve_Plan.bmp
I am needing to locate a given set of numbers in a string, and have limited success, it is almost always finding the numbers that I want, but I need it to be more reliable.Below is a test program that I am using to test with and also 2 picures that may explain better that I can put into words.
I have a string. I need to check what characters it contains because certain invalid characters are causing my sql query not to work. In the query I select where SupplierName is equal to the string. I need to replace the invalid characters at database and vb level. But I need to know first what the characters are.
I am trying to find the position in a string of a perticular letter of the alphabet (Q), I have found a method to determine if the letter exsists in the string, but not it's position.
I am not an ardent developer in vb.net programming. But off late I am using vb.net to develop a windows application.
The following is what I am trying to do:
I am reading an excel file and storing the string value present in each cell, and trying to match the string in a word file.
The program works fine except that I am having problems in returning the page numbers of the matched string.
The page number value is always returned as one.
The following is a piece of what I had written:
If FindStringInFile(wordfilename, vValues) Then currentPageNumber = word.ActiveDocument.ActiveWindow.Selection.Range.Information(Microsoft.Office.Interop.Word.WdInformation.wdActiveEndAdjustedPageNumber) TextBox3.Text = currentPageNumber End If
wordfilename is my word file and vValues is my excel string data
i can parse html source code and regex a few things, but i know the exact phrase i'm looking for do i still need a regex if i know what i'm looking for?
if (string = logged) then do the code if 'logged' is found in the html source else
I have a long UTF8 encoded text string. The actual values stored in the string are hexadecimal. I want to convert the encoding and save to a binary file.
Is there a simple encoding.convert or other method to do this with?
Basically the output is twice as large as it needs to be right now. The long way of doing it would be a routine to go through the string two characters at a time and convert to byte array and then .writeallbytes I guess. It seems there must be a simpler way of converting this?
Write a program that requests a color as input in a text box and then determines whether or not the color is in the text file. The program should use the Boolean-valued Function procedure IsCrayola that returns the value True if the color in the text box is a Crayola color.
I've been writing a socket application in which the client sends a user/pass combination which the server compares to a local text file. I'm only hacvin a problem with a small section where I have a do loop which does this comparison:(the string 'fromclient' has been defined earlier, as the information was received from the client)
fromfile As String Dim sr As StreamReader = File.OpenText("C:PASS.txt") Do While sr.Peek <> -1
All I am doing is reading each txt file I find in a directory and finding certain strings in the text then counting how many I find in each file and then once each file has its separate counts it send it to a sql database. I have most of it done, but I cant seem to get the count to separate each file so my problem now is that it counts the first file but when it counts the next file it adds to the first file and so on through all the files
I've two Strings which I'm loading from a SQL Server 2008 database (nvarchar-field)After loading them from the database Visual Studio 2010 displays them as follows in the watch window:
str1 = "Test" str2 = "Test"
But the comparison with str1 = str2 returns False If I write those strings to a file with UTF8 Encoding the result is as expected:
Test Test
If I write those strings to a file with ANSI (Default) Encoding the result is NOT as expected:
Where is the Byte 63 in case of ANSI Encoding OR Bytes 239, 187, 191 in case of UTF8 Encoding for str1 coming from?Well, Bytes 239, 187, 191 are the BOM for UTF8. The question here would more likely be: Why do I get the BOM for str1 but not for str2?(Well, the values are values passed to a webservice which inserts them into the database, the initial values are passed to this webservice by a client I've no control over)
This is my first post in the community. I am putting together a program that serves two functions:1. Takes input from TextBoxes and writes it to a text file.2. Takes the text from the text file and displays two specific strings of text in a MessageBox.This is the code for the button that writes the input to file.
Private Sub facSubmitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles facSubmitButton.Click Dim facultyRecord As String = "C:\Documents and Settings\All Users\Desktop\teeny.txt"
When using .write method the string will be stored at the end of the text file. Is there a method that adds them on top? If not, how can I get this done without using too much memory and processor time?