I want to be able to effectively search an array for the contents of a string.
dim arr() as string={"ravi","Kumar","Ravi","Ramesh"}
I pass the value is "ra" and I want it to return the index of 2 and 3.
How can I do this in VB.NET?
I am trying to search the 4 columns of my array by using this click event. The column is determined by a radio button as you can see. I changed my code from last time and now it works, but only for the first column. If i try to search out a string in the second or third columns I get an error based on the line highlighted in blue HTML accutally shows and it is green. the error says Index was outside bounds of array
Like i said It works fine for all values in the first column, accually the second (Numbered 1). If i enter a value in the partsnumBox and it is found in the the 2nd 3rd and 4th columns I want the value in the first column (0) of the same row.
Private Sub FindButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FindButton.Click
'Define Array
Dim PartsArray(,) As String = {{"PR214", "MR43T", "RBL8", "14K22"}, {"PR223", "R43", "RJ6", "14K24"},
[CODE]...
With writting a program that demotrates Binary Search Tree operation(insert, delete, and search)in VB.N NET?
View 1 RepliesRow1
;W910 RF3500AA ;Increase volume by 40 db ;(c) summer ;(p) horse +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row2
;W910 RF350011 ;Increase backlight by 50% ;(c) winter ;(p) vistar +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row3
;W910 RF350022 ;Increase backlight by 100% ;(c) spring ;(p) spaceman +1000000 F5 000000 5555 44 555555 904938291 8676859 00
Row4 (Duplicate of Row3)
;W910 RF350022 ;Increase backlight by 100% ;(c) spring ;(p) spaceman +1000000 F5 000000 5555 44 555555 904938291 8676859 00
if label1 = RF350022
label2 = Increase
label3 = spring
label4 = 100%
only if it contains all of these words it should return the first instance (row3) then end or null the rest (row4).how can i get row 3 to show in message box now it has been found?
I have to search within an array and display the number of occurrences that a value within the array appears. I know that my code is incorrect but this is what I have so far. If anyone can point out what I am doing wrong that would be great.
Private Sub btnResult_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnResult.Click
Dim intSearchAmount As Integer
Dim intCounter As Integer
Dim intIndex As Integer
[code].....
Basically I want to find the first occurrence of one array in another. I have tried using the Array.IndexOf Function, but it always returns -1. Example:
Dim array1 As Byte() = {1, 2, 3, 4, 5}
Dim array2 As Byte() = {2, 3}
MsgBox(Array.IndexOf(array1, array2))
Even though array2 does exist in array1, the message box always shows -1
The program allows users to insert Documents along with a bunch of their attributes into the program. The documents are stored in a relational database. One of the required functionalities is allowing the user to look for such documents. The User normally search directly for the obvious attributes of the document, like a unique ID, or it's Title. The problem is that from the search parameters is not allways known which ones will the user fill. For example the user inserts the name and version of the deocument, another time the user enters part of the Title and the person that delivered the document, or might just enter the document number and nothing else. Some of the data might even be incomplete, like title, name of the person who created the document and so on. The idea from the person who designed the system (I'm only reimplementing it) was to allow easier searches for the user, and allowing the user to search for more parameters tod with the idea that "the more parameters, the more specific results", since the results are always group of documents instead of single documents.
View 14 RepliesIf (strExcludeDirectories(i) = strNewActualDirectory) _
Or strNewActualDirectory.Contains(strExcludeDirectories(i)) _
Then
[code].....
I need to search through an array of X numbers (X is going to change, so for example, one instance could be that X = 20, the next could be X = 67). I need to find how many combinations of 1000 I can make. For example, each element in the array is going to be a number that is less than 1000. I want to see how many combinations I can make of the elements in the array (and what the combination is) such that the total of the combination is within 20 of 1000 (but not to exceed 1000). If getting within 20 is not possible, the range can increase to 30. If 30 is not possible, the range can increase to 40 and so on.
Every time an element in the array is used to get the combination closer to 1000, that element is to be deleted and NOT used for further combinations. The deliverable from this function would be the number of combinations along with what each combination is made of.
I went through a lot of sites about searching within an array, but I could not find any clues. I created the following array :
Private LetterArray() As String = {"A", "B", "C"}
and I don't know how to get the target letter from a "Textbox" and search "SearchButton" for it ?I have to do the following:
- Get the TargetLetter from the textbox
- Set a Boolean for Found to False (which I did)
- Use for loop For Each Letter in the Array (LetterArray)
- If the Word = the Target
Make Found True
Endif
I 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]....
I have a 2 column database....looks a little something like this:
Column A Column B
972CL 86.20716105
972CL 58.71034089
972CL 64.15368376[code].....
In column A there are 5 different variables (i have shown 3)....My goal code a macro to sort these by column A, calculate the average of the corresponding values in column B and ultimately end up with 5 variables that are the names of column A. e.g
972CL = average of all the 9721CL variables
972V = average of all the 972V variables
A caveat is that i will not know the names of the variables...i'm not sure if this code below is the right way:
For Row2 = 1 To 100
If Worksheets("Sheet2").Cells(Row2, Col2).Value = Worksheets("Sheet2").Cells(Row2 + 1, Col2 + 1).Value Then
testno = Worksheets("Sheet2").Cells(Row2, Col2).Value[code].....
I want to search number in array, i wrote the following code but it doesnt work
Sub Main() Dim array As Integer() = New Integer(3) {} Dim search As Integer For i As Integer = 0 To array.GetUpperBound(0) Console.Write("Enter any number for array location [{0}]: ", i + 1) array(i) = Console.ReadLine() Next Console.WriteLine() For i As Integer = 0 To array.GetUpperBound(0)
[code].....
I'm importing a text file of 42 lines, each containing 11 segments to be read. This is then split and put in an array. This is all displayed in TextBox1 for check purposes only.Next I'd like to search the array(0) of each line, and when the searched for text (search) is found, take the (1) (2) etc of that line to store in another variable which will be used for calculations later on in the program.I'll admit my head is now a Do Until = Crazy ! Loop I can't seem to get my head around the syntax and logic.How do I get a search function to check each line until the right text is found, pass the variables on that i need and exit that routine ?
My code up to now:
Imports System.IO
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim objStreamReader As StreamReader
[code].....
I have two array I'm trying to compare at many levels. Both have the same structure with 3 "columns.The first column contains the polygon's ID, the second a area type, and the third, the percentage of each area type for a polygone.So, for many rows, it will compare, for example, ID : 1 Type : aaa % : 100..But for some elements, I have many rows for the same ID. For example, I'll have ID 2, Type aaa, 25% --- ID 2, type bbb, 25% --- ID 2, type ccc, 50%. And in the second array, I'll have ID 2, Type aaa, 25% --- ID 2, type bbb, 10% --- ID 2, type eee, 38% --- ID 2, type fff, 27%.So, my function has to compare these two array and send me an email if there are differences.(I wont show you the real code because there are 811 lines). The first "if" condition is [code]I have two different layers in a geospatial database. Both layers have the same structure. They are a "spatial join" of the land parcels (55 000), and the land use layer. The first layer is the current one, and the second layer is the next one we'll use after 2015.So I have, for each "land parcel" the percentage of each land use. So, for a "land parcel" (ID 7580-80-2532, I can have 50% of farming use (TYPE FAR-23), and 50% of residantial use (RES-112). In the first array, I'll have 2 rows with the same ID (7580-80-2532), but each one will have a different type (FAR-23, RES-112) and a different %.
In the second layer, the same the municipal zoning (land use) has changed. So the same "land parcel" will now be 40% of residential use (RES-112), 20% of commercial (COM-54) and 40% of a new farming use (FAR-33).So, I wanna know if there are some differences. Some land parcels will be exactly the same. Some parcels will keep the same land use, but not the same percentage of each. But for some land parcel, there will be more or less land use types with different percentage of each.I want this script to compare these two layers and send me an email when there are differences between these two layers for the same land parcel ID.The script is already working, but it takes too much time. The probleme is, I think, the script go through all array2 for each row in array 1. What I want is when there are more than 1 rows with the same ID in array1, take only this ID in both arrays.Maybe if I order them by IDs, I could write a condition. kind of "when you find what you're looking for, stop searching when you'll find a different value?
I'm having problems trying to serial search an array. My code for the Form_Load event appears to work (I think!), but not for the combo box.
Imports System.IO
Public Class Form1
Dim winners() As String
[Code].....
The basic idea is:
1. Load data into array from text file
2. Display array data in text box (to check data is in array)
3. Select a football team from a combo box
4. Search the array for all occurrences of the selected team. I'm working towards counting the number of times a team has won the championship and then output a message box to this effect, but the code in the For loop is for checking purposes only. Likewise, the message box after the For loop is for checking purposes only.
What I'm getting is:
1. Data appears to enter array / displays in text box, but there is one blank line in the text box at the end of the list
2. The selected name is not transferred to the list box
3. The number of wins for Manchester United, Blackburn Rovers and Arsenal output 0, but the number of wins for Chelsea is 1. (NB: Manchester United is the first name in the array and Chelsea is the last).
I'm attempting to setup a search function from a string a user types. (ex: "John Doe" or "Doe, John") I was thinking I would use Replace(SearchString, ",", "") to get rid of the commas the user might enter, and then use Split(SearchString, " ") to get all the words into an array. Once they're in the array I would execute a Stored Procedure on each of the terms and build a DataTable with the results.
Below is what I'm wanting to use for executing my stored procedure.
oCommand = DataAccess.GetSQLCommand("MyStoredProcedure", CommandType.StoredProcedure, SourceServer.ConnectionLocal)
oCommand.Parameters.AddWithValue("@MySearchString", SearchString)
[Code]....
Now I'm thinking the "SearchString" I will assign while looping through my array of words... but this doesn't seem like the right way to do this. Maybe it is but I don't know how to append my next result to the previous DataTable either.
I have this as the structure
Public Structure TagInfo
Dim TagName as String
Dim hpt as Integer
[code]....
have the structures are populated and when the form opens up, I make a copy of the structure.on my form i have a textbox... that would have information matching the TagName(x).TagValue I am trying to figure out how i could find that value in my textbox quicker than doing a loop through the tagname structure.
I am trying to search an array and then say whether the result was found or not.
So far i have:
Option Explicit On
Module Module1
Const MaxAnimals = 20
[Code]....
Now i have looked online and all of them seem to give you like ready made things on VB but i have not used them yet and i know there is an easy way of doing it as my friend managed to do it before but i can't get hold of him.
Basically it is a program (There is more of it but this is not necessary for this) which puts the names of animals into an array then you can either add another animal, or in the sub i am doing at the moment view all the animals in the array but i can't work out how!
Given an enum similar to this:
Friend Enum TestValue As Int32
tstNotSet = -1
tstA = 0
[code]....
As noted in my comment to Jon Skeet, this construct, along with the rest of the Object's components, executes 100,000 times in a profiling loop in ~570ms (rough average of 3-5 runs).
Exchanging the above construct out with a smaller Array.IndexOf construct loops 100,000 times in ~630ms (again, 3-5 runs, rough average, the whole Object). The new construct looks like this:
Dim p As Int32
p = Array.IndexOf(TestValues, s)
If p <> tstNotSet Then
[Code]....
I'm programming a game of blackjack, it's working pretty fine but i still can get for example two ace of spades. I was thinking to put every card that is used in an array and when you deal another card you check your array first. if the card is already in the array you go back to generate another card if not its put into the array and you continue.
View 6 RepliesHow can I perform a very fast search in an array, that finds a substring of an entry in the array? As an example, let's say that I have an array containing these objects (as strings):
[Code]...
What I then want to do, is to find any matches matching (as an example) the letter "S". I want it to display all the entries with the letter "S" in it. I don't want to use loops of any kind, and I prefer using things such as the array's inbuilt BinarySearch function. However, it seems like the BinarySearch function only compares from the beginning of each item. I'm using very large arrays. So a fast method is really needed.
I have 2 byte arrays:
Dim A() As Byte = {1, 2, 3, 4, 5, 6, 7, 8, 9}
Dim B() As Byte = {5, 6, 7}
Now I want to find the occurrence of the full B in A. I tried Array.IndexOf(A, B) with no luck. Is there a simple way to search an array by array without the need to use any loops? It should find the index (position) of 5,6,7 in the same order as in B(). If A() contains {1,2,3,4,7,6,5,9} it should return false or -1 because they are not in the same order.
We 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] .....
I have been searching for a while now, but I still can't seem to figure this out. I wrote a rather large program, and to make things more efficient I started to create structs to store more info in a variable.All was well replacing my old code with new code, till I reached a certain point and found that blindly using a loop of integers to access the indexes of the array wouldn't work anymore... I need to access a specific struct by the information contained in a single variable within the struct (like a hashtable key), but can't seem to figure out how.
Is it possible for me to go through my array indexes in a fashion like this?:
Dim myArray(TableCount) As myStruct
Dim TableName As String = "SomeTable"
[code].....
Following is the format of the data stored in my arraylist.
A-Amsterdam
B- Brussels
C-Canada
so and so forth. I wan to search my array list by passing just the first few characters till '-' So if i have something like AA-Test then i want to pass just 'AA' to check if it exists or not.
I know that i can use contains or binarysearch but it does not serve my purpose as they both compare objects.
currently working through a project using VB 2008 windows form application and having a little trouble with the code. I need to read data from a text file into an array of a structure, displayed in a list box and have a number of searches conducted on the data and these results displayed on the form. The test data is of rainfall across a number of areas and is in the format:
I have a textbox which has about 120 lines of text but this can vary. I want to search for an array of words, like Boeing, Airbus, Saab etc there might be 3 options there might be 5 options in this array that i'm looking for. My question is how can I search the textbox and highlight all these words? Similar to (Control + F) in IE8. I've looked at InStr but am unsure if this is what I'm after as it does not seem to work for me.
View 4 RepliesI need to create a code that searches an array of movie titles. When the user enters a specific string, the first movie title that contains that string is displayed. For example, entering "he" would display Sherlock Holmes as opposed to the Blind Side. I don't know how to create a code that reads a string that the user enters.[code]...
View 2 RepliesThe following code works just fine:
Dim wksSheetNames(0 To xlsWB.Worksheets.Count - 1, 0 To 1) As String
Dim i As Integer = 0
For Each Wks In xlsWB.Worksheets
Wks.Activate()
wksSheetNames(i, 0) = xlsApp.ActiveSheet.codename
[Code] .....
What is the best vb.net based search method that would permit me to search for i.e. "Sheet2" and be able to obtain "Cats"? I attempted to ascertain the index number of "Sheet1" with:
Dim SheetArrIndex As Integer = Array.IndexOf(wksSheetNames, "Sheet1")
Then obtain the value "Cats"
wksSheetNames(SheetArrIndex, 1)
But I received an error message:
Code Line ->>>> "Dim SheetArrIndex As Integer = Array.IndexOf(wksSheetNames, "Sheet1")"
Error msg ->>>> "Only single dimension arrays are supported here.:
Obviously I do not know how to Search and Return the results of a 2D array.