Binary Search In ListBox
May 17, 2010Binary Search in ListBox
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Program That Demotrates Binary Search Tree Operation(insert, Delete, And Search)
Jun 10, 2011With writting a program that demotrates Binary Search Tree operation(insert, delete, and search)in VB.N NET?
View 1 RepliesCreating A Search Function To Search Through A Binary File?
Jan 5, 2010I'm creating a search function to search through a binary file and find a record based on the users input. Surprisingly, that isn't the problem! The problem I'm having is that as part of this I'm using a procedure to display results in text boxes, and I'm getting the error "Too many arguments to private sub display customer"I've encountered this error before, but never really knew what it was... Here is my code.
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
FilenameCust = "F:\College\CustomersFile.bin"
[code].....
Binary Search Not Using An Array?
Apr 11, 2011I am trying to write a program which performs a binary search. The user will input the name of a state in a textbox.I have a listbox which is populated with the 50 states in ABC order.The middle of the list must be determined and then determine which half of the list the state may be located. If the middle item is less than the state name the state should be in the second half of the list. If it's greater than the state name is should be in the first half of the list. The calculation for looking at the middle itemi the list is:
middle = CInt(first + last)/2)
There is a variable 'flag' which is initially set to false and then will be set to true if the state name is found. The variable first is initially set to 0 and last needs to be set to one less than the number of items in the list.Below is a very rough program fragment.
Code:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim i As Integer
Dim flag As Boolean = False
Dim first As Double = 0
[code]....
Create And Search A Non-binary Tree?
Jan 17, 2012I need to compare two tree-structured reports and show comparison results in a datagridview in vb.net. I think using tree structure should be efficient. But note that I DO NOT use a tree view to display results (I found a lot of help in tree view though). All I want to do is to construct two trees, and then search the trees and compare. I do not know how to write this in vb.net.
View 1 RepliesBinary Search Algorithm Applicable To VB 2010?
Sep 24, 2010Im currently using the streamreader/writer method for writing to a text file im considering implementing a binary search to increase the efficiency of searching through records.
Qus: Does binary search require the text file to be a binary file?Do I need to do binary reader/writer instead of streamreader/writer And are there any tutorials regarding binary operations in vb 2010 this is my first attempt at coding binary operations and have no idea where to start
Binary Search Array - Show Entered Value
Aug 4, 2009We need to show the value entered and the number that it is compared to in the textbox and concatenated to the binary array. This is the code that I have so far:
Public Class Tester
Shared array1 As Integer() = New Integer(14) {}
Dim count As Integer
Public Sub Main()
Dim i As Integer
[Code] .....
Binary Search Tree Delete Method?
Apr 9, 2011I have a delete method for a binary search tree. It only deletes the last two entered values. When trying to delete the root or anything to left of it it returns a null pointer exception.
PublicFunction Delete(ByVal key AsInteger) AsBoolean Dim current AsNode = root Dim parent AsNode = root Dim isLeftChild AsBoolean = True While (current.value <> key)
parent = current If (key < current.value) Then isLeftChild = True current = current.rightNode Else
[code].....
Binary Search Tree Sample Code In .Net?
Mar 13, 2010Anyone knows where I can download binary search tree for VB.Net ? I'm working on a small project for my company and I'm thinking of using BST as a sorting tool.I used to do BST using C++ and I was using linked list. I'm not sure if that can be done in VB.Net but is there any other ways? any input and comments are welcome.
View 1 RepliesDisplay Multiple Results With Binary Search?
Aug 14, 2011I want to produce a search that lets me have multiple search results but it only returns one.[code]...
View 14 RepliesIDE :: Selection Sort And Binary Search With Words?
Apr 28, 2009I have an array of words that must be sorted alpabetically using selection sort, I must then be able to search the array with a binary search. I just can't get my head around how you would go about doing it. I know that the words must be first sorted into alphabetical order. Here is the code for selection sort with numbers:
Dim pass As Integer
Dim count As Integer
Dim minmax As Integer
Dim temp As Integer
[code]....
How would you apply that to an array of strings?
Search For A String Pattern In A Binary File?
Oct 26, 2010I want to search for a String Pattern in a Binary File (Binary File is not 100% plain text). Here is the pattern:
"**_*_*_*"
or
"111_11_11_112"
VS 2010 Binary Search Of Arrays/Lists?
Dec 15, 2011my binary search isnt working, i think it has to do with the fact that im using a list and its searching thru an array
List
Option Strict On
Public Class Form1
[Code].....
Search MS Word Binary File For Specific Content?
Mar 4, 2011I have some .doc binary files stored in my database and i would like to now search them all (without converting them to .doc) to see which one contains the word "hello" for instance.
Is there any way to do this search in the binary file?
Binary Search Tree Delete Method Only Deletes Last Two Values?
Apr 9, 2011I have a delete method for a binary search tree that only deletes the last two values that were entered in, and when it tries to delete anything to the left of the root or even the root itself it returns a null pointer exception.
Public Function Delete(ByVal key As Integer) As Boolean
Dim current As Node = root
Dim parent As Node = root
Dim isLeftChild As Boolean = True
[Code]...
Getting A Binary Search To Work (warning:large Amounts Of Text/code)?
Dec 25, 2009Couldn't think of a better title.(Background on the problem/me)Okay, so, first question/post here, so hi. Now that that's done with, the information pertinent to my problem. I'm fairly new to VB (and programming as well, aside from screwing around with C++ and learning assembler(well, attempting is the better word) god knows how many years ago), and have only seriously been programming for about under half a year, and my skill level is about at that stage. Only been using VB.Net, nothing older. Depending on the time of day and if I'm home or at school, I fluxuate between VB express and Vis Studio 08. Umm, this program I'm having trouble with was on a test that I took yesterday (took the problem home with me cause I really wanted to figure out what was wrong with it).
The stipulations of the test were:
No For->Each Loops
No using Built-In Sorting or Searching Functions
[code].....
Search Listbox If String Found Copy To Another Listbox?
Nov 29, 2008I have a listbox which on form load generates correctly from a text file like so in a listbox...ex"John Doe, 1""Bob Brown,2"I now would like to search the listbox if it contains either a "1" or a "2" which is does in this case and copy the item to another listbox. The 1 and 2 indicate positions I have a position listbox for each position. So 3 listbos, first one contains the names on form load, 2 other empty listboxes one for position 1 other for position 2...I have tried the following
If xReservationListBox.SelectedIndex = xReservationListBox.FindString("1") Then
'MessageBox.Show("Found It")
xSpot1ListBox.Items.Add(xReservationListBox.Items(0))
[code].....
Search A Listbox And Save All The Results In Another Listbox?
Jan 27, 2012for now, i am using this code but it doesnt give me what i want.. for example i want to list all the items with the string "1"
Dim x, count As Integer
x = ListBox1.Items.Count
count = 0
[Code]....
How To Read All Files In Binary Mode And Put Into ListBox
May 14, 2011Using fs As New FileStream("C: estsomefilename.ext", FileMode.Open)Using rdr As New BinaryReader(fs) fs.Seek(225, SeekOrigin.Begin)Dim b() As Byte = rdr.ReadBytes(32)Dim s As String = Encoding.UTF8.GetString(b)
End Using
End Using
End Sub
How To Search A Listbox
Jun 21, 2012How do I make a search button so I can search for a string in my listbox. Example: The word "Apple" is in the listbox, I type "Apple" into the search box, click search and it shows up with the closest matches.
View 4 RepliesUsing A TextBox To Search In A ListBox?
Sep 13, 2011I am using a TextBox to search in a ListBox.My requirement is to search the list box for the string entered in the TextBox and if the string is found select that row (this work fine) and then look for a second occurrence of the string and if none is found set the TextBox text to the value in the ListBox selected item.
[Code]....
.Net Multicolumn Listbox Search?
Jan 25, 2010I want to create a search option.I have 3 text box with "name", "address", "phone number" on a form.what i want is when i start typing into the "name" textbox there should be a multicolum listbox with name and phone number,and as i type into the textbox the name should be searched into the listbox and highlited.when i select the name from the listbox the remaning textbox (address & phone number) should get the data accordingl from the database.if the name that i type into name textbox is not available in the listbox then i should get other two text box so that i can type the address and phone number and when i click save it (name, address, phone number) should be saved into the database.
View 3 RepliesListbox Items Search
Apr 15, 2012Im having a problem in my search..
I have a listbox named listbox1 then a button beside a textbox for searching records inserted inside
the listbox..
but when I dont type anything, the listview items gone..,what is the best way to solve this?
Listbox Search And Test
Dec 26, 2010Because 70 has a number which is 4 it will no longer be tested so we will test the second number which is 5)Because 6 is not less than 5 it will test the next number which is 25. 6 is less than 25 so it will move the number to the second listbox.)If you still dont get it iam willing to give you more idea and information.
View 7 RepliesSearch Function For A Listbox?
Apr 30, 2011I am trying to do a search function for a listbox and I have the search working but it is case-sensitive. How do you make it non?
For i As Integer = 0 To FrmMain.LstBxMovie.Items.Count - 1
If Not cancelled Then
If FrmMain.LstBxMovie.Items(i).ToString.Contains(sSearchString) Then
[Code].....
Search Using A Text Box And Listbox?
Nov 1, 2010give me code, in which i can enter a word in a textbox and a listbox appear with a item that has same string in which i enter in a textbox.
View 2 RepliesVB6 - Search ListBox Elements?
Nov 29, 2010I'm migrating an application from VB6 to VB.Net and I found a change in the behavior of the ListBox and I'm not sure of how to make it equal to VB6.The problem is this:In the VB6 app, when the ListBox is focused and I type into it, the list selects the element that matches what I type. e.g. If the list contains a list of countries and I type "ita", "Italy" will be selected in the listbox.The problem is that with the .Net version of the control if I type "ita" it will select the first element that starts with i, then the first element that starts with "t" and finally the first element that starts with "a".
View 2 RepliesVS 2010 Search In A Listbox?
Dec 11, 2011I use this code to search items, using a textbox, in a listbox:
ListBox2.SelectedItems.Clear()
Dim count As Integer = (ListBox2.Items.Count - 1)
Dim words As String
[code].....
How To Search For Part Of An Item In A Listbox
Aug 4, 2009I currently have this for search:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Using sr As New streamreader("C:moblist.txt")
While Not sr.endofstream
[code]....
I'd like to modify that to be able to put part of the name and it find it. example: Search for Banana Apple pie what it finds is 1743 = Banana Apple Pie Also I'd like when clicked the item from the listbox is displayed in a text box. If I use textbox.text = moblist.items(i) it only shows it when I search and not when I click. I've tried textbox.text = moblist.selecteditem but it does nothing?
ListBox Control With Auto-Search
May 17, 2012I am trying to create a custom listbox control by inheriting the default system.windows.controls.listbox class which would automatically select the item based on keyboard input. Currently the listbox provided in Visual Studio is capable of searching only on the first letter, but I am trying to create onw which would select the item based on consecutive keyboard input characters. on the listbox, The control would select Banana upon pressing b,ba,ban etc etc..on keyboard..I am trying to findout the event that get raised when typing is done.
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