Error In String Comparison With Text File?

Feb 16, 2012

Dim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end



C# - String Comparison In .NET?

Feb 17, 2012

What is the difference (in bref) between (.NET)

myString == otherString


myString.CopareTo(otherString) == 0

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IsNot For String Comparison

Oct 12, 2010

If Object.Value IsNot "Something" Then Can you do this, or are there certain cases in which it wouldn't work? Wasn't sure if this should only be used for integers and booleans.

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VS 2008 String Comparison Methods

Apr 27, 2009

currently I am using something like the following:[code]It seems to work fine, but I've seen posts on different blogs and stuff that say is better for some reason.Is this ok to use or should I be using

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Function Returns Nothing, Yet Throws An Error During Comparison?

Mar 21, 2012

In our code base there is a function which should return either an object or nothing. The exact code is this : Return NothingThe calling method looks something like thismyObj = theClass.function()if myObj <> nothing then // fails

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.net - Basic String Comparison - Comparing The Vars Gives A False

Aug 5, 2009

after slicing and dicing, i got 2 vars with the following values in

strTag = "&lt;#<span class=SpellE>vermittler_person_Name</span>&gt;"
tmp = "&lt;#<span class=SpellE>vermittler_person_Name</span>&gt;"

Comparing the vars gives a false:

strTag = tmp ' ==> false

Comparing the values directly right there gives a true:

"&lt;#<span class=SpellE>vermittler_person_Name</span>&gt;" = "&lt;#<span class=SpellE>vermittler_person_Name</span>&gt;" ' ==> true

Both are strings, i tried all kinds of stuff:, string.equals, also regex etc. etc. everything works perfect with all the other strings with simlilar structure, just not and only not with "vermittler_person_Name" in the middle...

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Import A Particular Record In A Database To System And Convert It To String For Comparison?

Jan 27, 2011

it's a log in form and I need to put case-sensitive validation in other words if your Username = Admin then Admin != admin Consider this code block (VB is really unfamiliar for me so break it to me gently ^^) This is after it has matched a record in the database to the parameter passed to the function LogIn()

If dataTable.Rows.Count > 0 Then
'case-sensitive Validation follows
'data in Column ID and Password are placed in variables


the asterisk-ed line returns an error (obviously) as strId is not of data type String.I also tried using LIKE but again since strId and strPass are not Strings, all I get is an error.

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Comparison - 4 String Lists - Compare The Contents Of The Input List - Containing Words

May 31, 2009

I have 4 string lists as follows

Dim input_list As New List(Of String) Dim input_POS As New List(Of String) Dim trigger_list As New List(Of String) Dim trigger_POS As New List(Of String)

I want to compare the contents of the input list (containing words (e.g., want, the) etc. to the ones of the trigger list (containign again words) and if a same entry (i.e. word) get the POS for both input word and trigger word from the relevant lists and put them into a property list. For example

input list (want, the, right)trigger list(want, there, wait)input list POS (verb, article, adjective)trigger list POS (verb, pronoun, verb)

Output property list (want:verb, want:verb) (only want is common between input and trigger list). Then I need to conduct a test between the two property items for similarites. If they are exactly the same, the code should output a confirmation "i.e., Yes" into a textbox. If not the code should output a "No" plus the contents of the property list into a textbox.

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C# - Changes Highlight In (like Beyond Compare): Text Or HTML Comparison

Mar 5, 2010

I need to highlight changes(diff) between 2 database text fields in a application. I'm used to "beyond compare" text compare, so the Ideal solution will do something like it, but if it just highlight the differences, that would be OK. [URL] The content is HTML, so if it could compare the HTML rendered text, it would be even better. So, i need a link or a control (free if possible) to do that job.

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Use Or In Comparison Between File Attributes?

Feb 3, 2012

I have searched a lot on the web about changing file attributes in .net , it takes me a long time to get the final code but it was really good. But after all of my search I didn't know why we use "And" when we compare file attribute like this:

If (System.IO.File.GetAttributes(FilePath_txt.Text) And System.IO.FileAttributes.Hidden) = System.IO.FileAttributes.Hidden Then
MsgBox("File is hidden")
MsgBox("File isn't hidden")
End If

Otherwise when I want to set Multiple attributes for on file I have to use "Or" with it like this

System.IO.File.SetAttributes(FilePath_txt.Text, IO.FileAttributes.System Or IO.FileAttributes.Hidden Or IO.FileAttributes.ReadOnly)I know this isn't a big problem but , I can't write a code I don't know how it is actually works.

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Comparison To A File On A Different Computer On The Same Network

Jan 4, 2012

I have a computer that takes in a barcode through a Visual Basic program on one computer and I want to be able to compare that barcode as a String to data on a different computer on the same network by ethernet connection where the data is stored in an Excel 2010 file (.xlsm) in Column A in a workbook called 'Data.xlsm'.  Before the data is allowed to be saved or used further in the program on the first computer, I would like for the comparison to happen.

Some more details that you all may or may not need.

Computer 1 (where barcode is scanned): Windows 7, Office 2010

Computer 2 (where data file is stored): Windows XP, Office 2007

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Excelsheet Comparison - Put All The Cells That Are Different In A New File

Apr 14, 2011

i have 2 excel sheets (file1.xls, file2.xls), both with 2 columns. the first column of both files contain keywords, (both files have the same). now i want to write code in excel that compares the 2 files and put all the cells that are different in a new file (file3.xls). i already saw an example here on the site, Excel sheet values comparison, but somehow it doesn't fit for what i need, and i don't get it to work.

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Binding TextBox.Text Causes 'Input String Was Not In A Correct Format' Error When Deleting Text

Oct 25, 2009

I am trying to bind a textbox to a binding source (using the IDE DataBindings Editor) and it works fine except for one thing: if I delete the text I get the subject error. What I want to happen is the datarecord field be updated to a dbnull value -- how do I get that to happen?

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Comparison Error Operator "=" Is Not Defined For Types 'Byte' And 'Char' While Converting C#

Jan 21, 2011

I am in the process of converting some c# code to that of VB.NET...I am running into error at the following


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Split Comma Separated String In Text File And Save Each String In Different Variable?

Dec 5, 2011

These is the content of my txt file which is saved in D drive in my pc abc,1,2,3..I tried the flowing but it didn't work:[code]I am getting error on this line.. data = line.Split(","c) says this line isn't in use anymore or something and that I rather use LineInput but thats asks for filenumber and i don't know what that is. I am sorry but I am a complete beginner. what else can I try? [code]ok that error is gone now but now if I want to add these values to a list can i do that?

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Read Unknown String After String In A Text File

Jan 30, 2010

i have a string with the value = "/var/mobile/Media/iTunes_Control/Music/" i need to read the next 13 letter after this string in a text file i am also using a loop to do this multiple times

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Header As String = "/var/mobile/Media/iTunes_Control/Music/"


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Update The Text In The TextBox - Get This Error All The Time: "Public Member 'Text' On Type 'String' Not Found"?

Jun 6, 2009

I've created a private sub called addIRCRoom Which makes the Tab and the TextBox, but i can't figure out how to update the text in the TextBox.I've made this function to handle it:

Private Sub displayOut(ByVal Channel As Object, Optional ByVal User As String = "", _
Optional ByVal Message As String = "")
Channel.Text = "<" & User & "> " & Message & vbCrLf
End Sub

But i just get this error all the time: "Public member 'Text' on type 'String' not found."how to update the text

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How Will Change The Label's Text To The Random String Of The Text File On Startup Of The Application

Apr 23, 2011

I have a label that reads a random line from a text file and that string becomes the text for the label.

Now the problem; the label will only work if it is clicked because the event handler is click.What I need is this to work automatically at startup. In other words, it should change the label's text to the random string of the text file on startup of the application.

Here is my code.[code..]

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Error Message Text Not Member Of String?

Feb 25, 2012

I keep getting an error message in my code "text is not a member of string" on each line similiar to: TextBoxVerb1 = TextBoxVerb1.text.Trim and I can't figure it out. Here is the code:

Private Sub Buttonsubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Buttonsubmit.Click
Dim str As String


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Replace A Portion Of Text In A Text File With A String

Feb 16, 2010

How would I go about replacing a portion of text in a text file with a string?

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Error When Opening Text File - FileNotFoundException Was Unhandled - Could Not Find File At Xxx

Feb 15, 2012

I have a program that can save user's input into a text file and load it back, but whenever I try to open the file and exit without selecting the file I get an error.(if i select the file and open it i don't get any errors).

This is the code that handles text file loading:
Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
OpenFileDialog1.InitialDirectory = "C:"
OpenFileDialog1.Filter = "Text Files ONLY (*.txt) | *.txt"


The error is :"FileNotFoundException was unhandled. Could not find file at xxx". also I would like to know how to make it so that the initial file name for file saving is today's date. I do not get any errors when I try to save the file.

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File I/O And Registry :: Find/Extract String From A Text File?

Jun 7, 2011

I've got an application that passes commands to a terminal window and saves all the output to a text file Here is one of the commands my application passes to the terminal

MyProcess.StandardInput.WriteLine("host " + device)

The output of which is

"HostA has address Y.Y.Y.Y"

this along with a whole bunch of other text is saved to a text question is how do I find the sting "HostA has address Y.Y.Y.Y" in that text file and then extract the IP address and assign it as a string variable?

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After Change Text Of A Listbox Item Error Can't Cast String To List

Apr 20, 2010

Function runs fine on the listbox until i use the btnUp_Lanemgr click event

throws an exception in function (below in bold) "Unable to cast object of type system.string to type namespace.myitem"

what i can do to make this work?

'Button moves selected listbox item up
Private Sub btnUp_Lanemgr_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUp_Lanemgr.Click


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File I/O And Registry :: Extracting Md5 String From Text File?

Dec 21, 2010

i am working on a project to extract all md5 hash from a text file;btw i don't mean the text file hash i talking abt the hash string inside the file?

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Getting String From Text File

May 7, 2011

so I have a file called config.cfg that looks like this [code]

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Add String In Middle Of A Text File?

May 4, 2009

What I'm trying to do is add a string in the middle of a text file, instead of just appending the end of the file.[code]...

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Delete Last String In A Text File?

May 13, 2010

I am trying to delete the last line of a text file, then append new text to the end - The problem I have is that the code I have is set up to search for an Index, not a String, or the EOF line - I tried to modify it to search for the end string in the file, but that didn't work, either - Here's what I have:

'Delete last line
Dim lines As New List(Of String)(IO.File.ReadAllLines(LocalAppData & "settings.txt"))
'Remove the line to delete, e.g.


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Detect A Certain String From A Text File?

Jul 7, 2009

How do i detect a part of a string from a string in a text file? I'm using vb08[code]...

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Read String In Text File?

Jun 28, 2010

I know how can i read string from the text file?[code]....

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Replacing String In A Text File?

Aug 12, 2011

What I basically have is a small game which I want to count wins/loss/ties. I have no problem with the game aspect but need to know how I can replace a string in a csv file. IE: If Jim wins the game, his 5 needs to be turned to a 6. After googling quite a while I came across the replace() function, but it doesn't actually rewrite it back to the text file

Contents of users.txt:
Snippet of


The issue I have, is if I try to use any sort of IO function after this (WriteAllLines, streamwriter, etc) - I get a process is being used and can't touch the file (because its being read).Must I somehow create a new file with a copy of everything including the replaced string?

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Searching Text File From Certain String?

Feb 1, 2010

I've got two text files. The first has got a list of certain keywords. Each one if these keywords are fed into a combobox. Now, when I choose one of the items from this combobox, I want to search the other textfile for the same keyword and read from that point to the next keyword. And then feed each line into a listbox. Perhaps I should use an INI-file for this purpose, doesn't really matter for me.

The textfiles have this structure;
New York

The second textfile has this structure;


'New York'

Is this possible? The reason I want to do it this way is to create a fully dynamic system. One which relies fully on whatever information is stored in these textfiles. I'm gonna build pretty complex strings from these results later on. So far, I've got this to read the first file and add each line to the combobox:

Dim oReadMenuFunction as System.IO.StreamReader
oReadMenuFunction = IO.File.OpenText("textfile1.txt")
Do While oReadMenuFunction.Peek <> -1
Dim LineIn as String = oReadMenuFunction.ReadLine()

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Try Read The String From Text.txt File?

Jan 3, 2011

i tried to read from the data.txt like this..

// name
name = fitri


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VB Connection String For Text File?

Mar 29, 2011

I want to connect to a text file(*.txt) through VB 6.0 and my connection string is:


I have also tried,


But I am getting an error for both:

Runtime error: -2147467259(80004005)

Could not find installable ISAM

I have Windows XP SP2 and MDAC 2.8 SP1 has been installed with that

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Error In Reading A Text File?

Feb 26, 2012

In my project i read text file line by line by checking with a specific word and store that line into textboxes.

My code id

Dim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end


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Error While Writing Into Text File

Jan 30, 2011

Application log file have been created to monitor the process and following code has been used to write the log information into text file. For the first time there is no error encountered when the application runs for hours, may be 3 hours i am getting following error "An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" [code]...

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SQL Error When Importing Text / CSV File

Aug 19, 2011

When the connections is successful (which it does when ran). Button 1 Writes to the text file (which it does successfully). Button 2 deletes the contents of the table and not the table itself (which it does successfully). Last, button 3 is supposed to read the text file and insert each field which is separated by a comma back into the existing table. However, at the "addComm.ExecuteNonQuery()" step I receive an error (An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in I have spent many hours trying to find a solution but can't seem to get it to rewrite the text file back to the table.[code]...

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Text File Being Used By Another Process Error

Jul 25, 2009

I have an App that saves one line of data to a textfile like this[code]...
If I try to overwrite that file or delete it I get the error "The process cannot access the file 'c:windowsDScatalog.ini' because it is being used by another process."

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Exract Lines From Text File That Start With "text:" String

Dec 26, 2010

i am trying to make text file that will include my sms text meassges 

for that in need a code that will extract the the line that appears after the string "text:"


the text file that exported from my phone  look like this :

time: 22:00
text: bla bla bla
time: 23:35
text: yada yada yada

what i need is a new file that will look like :

bla bla bla
yada yada yada 

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Compare String From TXT File And Textbox Text

Aug 23, 2010

First I create a class which have a string property
Property stdName() As String

Then I open a text file and put into array of that class
Dim arrStudent() As Students
Dim allstdinfo As New IO.StreamReader(dlgOpenStudentsFile.FileName)
Do Until (allstdinfo.Peek() = -1)
Dim strAllstdinfo As String = allstdinfo.ReadLine()
Dim arrStudentLine() As String
[Code] .....

Finally I run a for loop and compare the stdName property with textbox.text
Dim counter As Integer = arrStudent.Length
(debug here)
For i As Integer = 0 To counter - 1
If (String.Compare(arrStudent(i).stdName, txtStdName.Text) = 0) Then
lblPhoneNo.Text = arrStudent(i).phoneNo
End If

And I add watch:
Why the compare return 1

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Deleting A String From A Listbox And A Text File?

Jun 21, 2010

I'm writing a email program and i need to make it so that when I delete a item from a listbox it also deletes from a text file. Right now all it does is delete it from the listbox and when the program is reloaded its still there.

Dim arrEmailSelect As New List(Of Integer)
Dim fileContents As String
Dim thisEmail As New email


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