Just a litte about me. Well, I am not intermediate but I am not a beginner either. And I like to try to do my own work as much as I can. I am not a mooch just to let you know.
I made this tiny program that pulls in a text file data with StreamReader method. Okay how can I sort the text file alpahbetically A - Z while it comes in is this possible? and how do I do it, I have no clue.
I made this tiny program that pulls in a text file data with StreamReader method. Okay how can I sort the text file alpahbetically A - Z while it comes in is this possible? [code]
View 3 Replieshow to create ascending order datatable in asp.net without sorting method
View 3 RepliesI have a problem with a streamreader in visual basic 2008.I am updating a database from text files on an ftp server. The streamreader works fine until the file is more than 100,000 bytes long.It reads until it reaches this point and then just ends. No error message, it just reads to this point which happens to be 2 fields out of 6 in the database stream. My question is - does the streamreader have a limit? And if so what is a workaround?
Dim connString As String = "Data Source=" & pDataBase
conn = New SqlCeConnection(connString)
Dim strQuery As String = ""[code]......
I'm writing a program that basically loads an entire text file into a streamreader variable, then reads this variable line by line and parses and writes a line into a new text file. I'm VERY new and my knowledge is mostly self-taught, but I can't seem to get out of this one. It works for smaller files, but it appears to reach a limit in characters at some point because in a file of 900 lines, it stops writing about halfway through 800 and there are no errors, the program actually completes and the message box pops up.
There are a few things with this code I already know I should fix, such as creating the new text file name, it's messy, I just don't know how.
Private Sub btnProcess_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProcess.Click
Dim IndexValues As String()
[CODE]...
I have a flat file that is sorted by account number. I am migrating an application that was in vb6 to .Net. The application uses Random file access and uses a binary sort method to find a record.
Here is the code
Do While (low < high Or low = high) And (f = 0) 'Checking for an account match
middle = (low + high) / 2
FileGet(FileNum, Record, middle)
If Account < Trim(Mid(Record.Data, Byte1Start, Byte1Len)) Then
[Code] .....
From reading up on this in .Net it seems that using the Binary Reader seek method would be the alternative to using old vb6 random access code. The problem is the Binary Reader Seek method goes by Byte position instead of record number. How to convert my code to use a binary reader.
In the following code all goes well until the .Sort line. Then I get an error which says, "The sort method is not valid. Make sure it is within the data you want to sort and the first sort by box isn't the same or blank."I've tried various permutations to deal with this exception, all to no avail. The Range is Selected ok and the Excel data are pasted from the clip board ok. Then I get the error and no sort occurs.
[code]...
How can I improve this bit below to make the items in the TreeView to sort faster or something totally different to sort them easier?
[Code]...
Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
I have a MyObject; myObjects as List(Of MyObject) and a delegate Comparison(Of MyObject) that uses a lot of comparison functions (ByA, ByB, ByC etc) Ã la:
Shared Function CompareMyObjectsByName(x As MyObject, y As MyObject) As Integer
Return x.Name.CompareTo(y.Name)
End Function
[Code].....
Sub Sort()
ReDim RollsCC(NumOfPlayers - 1)
For N As Integer = 0 To (NumOfPlayers - 1)[code]....
Here I am creating a temp single dimensional array, merging my 2d array into it, and then attempting to sort it by Rolls(N,1), which is a integer 1-6, Everything seems to be working right with the exception of this.
RollsCC.Sort(RollsCC, 0, 1)
How would one specify a numeral sort based on the first character in the string? im aware that I am switching Rolls(n,1) and Rolls(n,0) information during the sort.
Currently my ListView sorts items by image.index. So 0 is at the top, then 1, 2 and so on. Think of it as an IRC chat room nick list. Ops at top then the rest are sorted alphabetically
[Code]....
I am trying to sort an arraylist using .Sort() but am not sure what to put in the () for the field/column I want to sort on. Here is the portion of my code that creates the array from a SQL Query
[Code]...
I am doing an assignment for my programming class in which we have a text document full of names (one per line), and we set up a program with a textbox, button, and listbox. The user enters a name in the text box, clicks the button, and it searches the document for the name. If it's found, the listbox should say so and list the line number.I can get that working no problem, but the assignment also requires informing the user if the name can not be found, and I am not doing something right with that.My code is as follows:
Quote:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim inputname As String = TextBox1.Text
Dim linecount As Double = 0
If I remove the three bolded lines and it finds a name, it will work fine to the point that it informs as such and tells what line it is on, but it won't inform the user if a name wasn't found, which I need. I thought adding those three bolded lines would help, but when I have them in there, it will incorrectly display "Name not found. " no matter what name I type in the box, even if it is in the text document.
I am using the Array type .Sort function to sort my array.By default it places the result Array into Ascending order Least to Greatest How do I change that to Descending order Greatest to Least?and How do I change it to Closest to logic? or does that not exist?Assume there is an Array of Numbers 0,13,21,-2,4,5,1.34 and I want them to sort closest to 0 or some other arbitray value; the Output should look similar to:
0,1.34,-2,4,5,13,21
Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
View 5 RepliesI have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
[code]....
How do I use a StreamReader to read the data (from a text file), parse it, and place it in a two dimensional array??
The data:
0,710,887,1130,525
710,0,1510,1610,515
[code].....
I am testing code that recursively searches for files, reads them and determines if a user supplied text string can be found. I am getting Out of memory errors on files > 250 MB. The system has 4GB RAM and no other apps are running. Here is the section that throws the error. Other than this, the program seems to work perfectly. 250 MB files are OK, 275MB files are not.
Private Function FindStringInFile(ByVal FileName As String, ByVal SearchFor As String) As Integer
Dim strTest As String = String.Empty
[Code].....
I have a comma delimited text file with the U.S. States and their respective state bird listed in the following format.
"ALABAMA", "YELLOWHAMMER"
"ARKANSAS","...
"...
What im trying to do is parse the rows and send the parsed data to different comboboxes. I have a combobox for states and one for birds.I can load the file into the first combo box but im not sure how to parse and send the second column to the second combobox. here is what i have so far.
[Code]...
magine there is search box (textbox), and below there are a search button with a rich text box.My text file located in the drive C is like this: [code]I want to search only two types of items in my text file located in drive C, namely: Construction and Non-construction. When the user will type a product name, OR size, OR whatever, he must get results only for the Construction or Non-construction. The user must not get results for the Food. And the user can make misspelling of words in the search, so the Search box must tackle it. And yes, the results should appear on the rich text box on the form itself.What is the code of doing the Search according the criteria above? All I know I have made a srteamreader code but when clicking on the search button, it is giving me all the texts i wrote in the text files. However, I want only some lines to be read.
View 3 RepliesHow do I know if I have reached the end of file using streamreader. My file has a lot of empty lines in it.
So if it try to use the following, its just stops wherever an empty line appears.
[code] while ( Not line is Nothing) do.... end while [code]
Using vb 2010, How can I use the streamreader to read within a rtf file from one pt to another pt thus capturing specific txt then loading it into a datagrid
View 2 Repliesfor some reson stream reader is failing, i have made a simple program that creates opens and edits files but the open, save as is not working for some reson here is my code:
open:
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
Dim ofd As New OpenFileDialog
Dim fl As String
ofd.ShowDialog()
[code]....
using the StreamReader / StreamWriter code. I want to store a new password in a .txt document that will later be printed. Here is the code I have so far. The code runs but I cannot find the .txt document.[code].....
View 2 RepliesWhat is the best method to get towards the end of a file in a Stream Reader. In my case, I have data at the end I want, but the rest of the data I don't need. If the file is very large instead of reading line by line until eof, is there a better way to get to the end?
View 2 RepliesWrite an overload for every numeric type or if possible constrain a generic extension method to just numeric types.
View 2 RepliesI just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesI will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...