Compare Arrays And Listboxes Values In VB 2010
Jul 22, 2011
I have a program that has to store a pre-made array that contains strings (moviename, moviegenre).
I setup all the items in the array already, example:
moviearray(0,0) = "Green Lantern"
moviearray(0,1) = "Action"
For this example, if the user selected "Green Lantern" from my listbox, then the label needs to display "Action". So yeah, it's a 2-column array: first column = movie name, 2nd column = movie genre. Now, I have a listbox containing all of the movie names (not entered by the array, but entered through the Item property of the listbox). When a selection is made in the listbox and a button is clicked, I need to have the genre of the movie output to a label. That is where I am stuck, I just can't figure out to compare what's in the list box with the first column of the array to output the 2nd column to the label.
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Jun 12, 2012
I'm trying to determine the highest customers in a single month of the year. I also need to add the corresponding month to that.
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Jul 2, 2011
I want to put the matches from a regular expression into an array or something that i can use to compare it with another array, it being the lines from a txt file names "users.txt". Code A:
[Code]...
And the second code will do the exact same thing. What i want to do is compare each line in the Txt file (Code B) to the reg expression matches (Code A) and for it to alert me if any is missing. So it needs to compare Code B to Code A. (PS. Order is irrelevant, it can be in different places as long as its there) In my other thread i got a little confused and couldn't clearly communicate what i was trying to do.
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Jun 19, 2011
how to compare two list boxes and remove identical values or add them to a 3rd list box, but for some reason it's not working when I retrieve the data from a mySQL database using ADODB, here's my work cut down by a fair bit for it to be easy to understand.
For k As Integer = lstFriends.Items.Count - 1 To 0 Step -1
If lstDBFriends.Items.Contains(lstFriends.Items(k)) Then
lstFriends.Items.RemoveAt(k)
End If
Next
I've tried everything from changing the data type on the mySQL database to storing the retrieved data from the database to String declaration and it simply wont compare the two listboxes
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Feb 10, 2012
Depending on the data being used, I can have up 10,000 items in each of the 2 ListBoxs. I need to find and remove any Duplicates between the 2.I am currently using the method of select and Item from Listbox1 and search in Listbox2. If I find a match, then remove both items. This goes back and forth until all the duplicates have been removed. This take some time.Currently have the code in Old VB6 and VB2008 Express.
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Nov 29, 2011
Is it possible to compare 2 arrays without looping? For this example, I need to compare aryFi.Count to currentarraycount. if aryFI.count>currentarraycount, then I need to add the ones in aryFi.count into a public array named pgarraylist. Since aryFi contains more items, I can't just take the .count-the difference in counts, I need a way to get the items contained in aryFi but not in currentarraycount. EDIT - currentarray is the list of currentarraycount Sounds confusing - but here's an example.
Public pgarraylist As New ArrayList
Dim aryFi As IO.FileInfo() = di.GetFiles("*.xls")
cntdif = aryFi.Count - currentarraycount 'currentarraycount is updated after changes occur and when loading program.
For y = cntdif To 1 Step -1
[code]....
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Aug 13, 2009
How can i compare two arrays like :
Dim Ar1,Ar2 as array
Ar1 = My.Computer.FileSystem.ReadAllBytes("C:Try.mp3")
Ar2 = My.Computer.FileSystem.ReadAllBytes("C:Try1.mp3")
how can i compare that two?
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Mar 9, 2009
I am trying to compare two long bytearrays in vb.net and have run into a snag. Comparing two 50 meg files takes almost two mins so I'm clearly doing something wrong. I'm on an x64 machine with tons of memory so there are no issues there. Here is the code that I'm using at the moment and would like to change.[code]...
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Dec 28, 2011
I am trying to make an intelligent stock pick/dispatch location system at the point of invoice from a stock database. Multiple locations are available to dispatch from, and essentially I want to make efficient dispatch, so if all items purchased can be dispatched from one location, they are grouped and dispatched as such, but if not, it groups what it can and dispatches the rest from wherever the highest stock level is available.Because the number of locations has to be variable, this system is scalable.Because the number of items is also scalable So, instead of listing suitable stock locations, I am now listing the quantity of stock available in each location for the respective items.
Items Locations
_________|__1___|___2__|__3__| - this is location IDs
Item 1 | 3 , 4 , 1 - this is the qty of stock available
[code]....
I can turn this into a string which might be used to split and create arrays
ie
stockDetails = "3,4,1|2,4,0|1,3,1|6,1,3"
Here, the comma separated values are quantity of available stock in each stock location and the pipes separate the individual items, so the table above is translated to the string above.I am not keen on multi-dimensional arrays and don't know how I'd create one without knowing how many stock locations there are.
We can safely assume That the stock quantities are in the correct order to correlate back to the stock locations IDs.
Each pipe separate series of comma separated values will have the same number of comma separated values.I just can't work out how to determine the pick locations! In the above example, all four items can actually be picked from stock location 1, providing only one of each item is purchased. Suppose though a customer bought 2 of item 3. Then the pick would have to be from location 2. All kinds of other scenarios can of course be presented depending on the number of items purchased, the quantity of items purchased and how many stock locations there are to pick from.I started off simply picking from the location with the highest available stock, but that made no sense when stock was available to pick from more than one locaton because we ended up with multiple dispatch locations which was not necessary.How can I analyse these variable length strings/arrays to determine the most intelligent way to dispatch.
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Jun 29, 2009
This code below is from one of the different forms that I am using for a bigger project. I keep getting an error when it comes to the list box. Each index needs to be assigned a value and I can't get it to work!
Index 0=8
Index 1=15
Index 2=70
Public Class frmRegular
Private Sub btnCloseRegular_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCloseRegular.Click
Me.Close()
End Sub
[Code] .....
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May 2, 2012
I declare my 2D lists:
Dim _invoiceitems As New List(Of List(Of String))
Dim _dbitems As New List(Of List(Of String))
Each List is filled like this: Example Code To fill:
_invoiceitems.Add(New List(Of String))
_invoiceitems(0).Add("Code #")
_invoiceitems(0).Add("Quantity")
Well, now i need a third list called (_changesitems) Note that this result with the differences: be the result of subtraction of quantities if this is found (dbitems - invoiceitems).
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Jul 16, 2009
I have a question about efficient implementation. Lets say I have two arrays:
One array is all possible items in a house: Table, Chair, TV, Fireplace, Bed
The other is an array of items in a particular house: Table, TV, Bed
I also have two list boxes:
1. listbox for items in the house - the "HAS" list box
2. listbox items not in the house - the "NEEDS" list box
I need to list the items already in the house in the "HAS" list box as well as the items that are NOT in the house in the "NEEDS" list box. It seems to me that nested "For each" loops would be a start to solving this problem but I am not exactly sure which case needs to be nested.
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Jan 13, 2010
i have tese two arrays
if i find filter_ids in stroutids i want to remove those from stroutids array
Dim strOutIDs() As String = Split(OutIDs, ",")
Dim Filter_Ids() As String = Split(Me.ucIo_Entry.Filterd_RowIds, ",")
[Code]...
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Jul 15, 2011
I have a two different tables, Table 1 and table 2.
Table 1
-----------
Resource
Start Date
End date
[Code]....
Here I have to match the total hours of each table according to the resource,
then have to find the mismatched data and find difference with that values of mismatched data.
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Mar 28, 2011
Comparing value from the same table for my final project.[code]...
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Apr 5, 2011
Am just goin on 3 weeks of teaching myself vb2010 and have found a long way to do a simple task. Well it seems it should be a simple task. I have about 12 different listboxes spread over 3 different tabcontrols. There are 3 buttons that load all the listboxes according to which tabcontrol they are in. I found that when populating the listboxes it would not clear before loading the information so it would basically double post, triple post etc. I've figured out one way to do it that I've put in a sub and call the line before the tabcontrols are populated with their listboxes. Here is the sub:
[Code]...
It seems like a longwinded way to do this is their an easier way to have one command clear all listboxes within all tabpages within all tabcontrols on the form??
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Sep 6, 2011
I'd like to display the same data in 6 different listboxes but with different queries.The data is formatted as so:
ExptStage
expt1Expt List
expt2Ready to Print
[code].....
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Mar 29, 2010
Basically i have 12-16 text boxes, with certain values in them.
i think i need a nested loop one to take first box and go through the rest to compare them and then a second loop withint that to do the actual comparison.
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Aug 10, 2009
I'm trying to figure out a way to compare two "salted-hash" strings. How can I do this? I know that the salt is a random generated value that's appended to the plain text, then we just compute the hash of that new string.So how can I compare these two values? O_O (The new hash that the user hash written in a textbox and the hash stored in a database)
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Oct 4, 2009
how to compare values of two different strings.
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May 10, 2009
I wanted to ask how should i read the text file find a value and place it in textbox then find for the same value from other part but at the same text file.
I give the example of my text file:This is one part.
[Code]...
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Nov 13, 2009
How can i compare two string values in vb.net? i've tried compare, equals functions but it's not giving me the correct result. what i'm trying to compare is as follows. also let me know if the code is correct. i'm new to vb.net
[code]...
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Jun 8, 2011
I need comparing value from the same table for my final project.
Example :
Table 1 :
SubjectCodeClasses
Sub Aclass 1
Sub Aclass 2
Sub Aclass 3
Sub Bclass 2
Sub Bclass 3
Sub Bclass 4
Sub Bclass 5
Sub Cclass 6
Sub Cclass 7
Sub Cclass 8
...
My task is, I need to compare the classes in the subject. Sub A with class 1, class 2, class 3 have to compare with Sub B and Sub C. if classes from Sub A exist in Sub B then the output is 0, if not the output is 1. then Sub A again will compare with Sub C and the rest. After Sub A compare its value with other subject. Sub B will start comparing with all the subject and so on.
Below is the concept.
Sub ASub BSub C
Sub A001
Sub B000
Sub C100
I really don't know to do the loop..
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Apr 5, 2012
I have an array with 35 "cells" each with a value. ( CheckValue(34) ) Now i want to compare all values with eachother to find out wich 7 of they are the biggest. Is there any easy way to to that?
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Dec 6, 2011
I have a checkedlistbox full of values, and then a list of values that's a subset of of those in the checkedlistbox. I need to check all the items that are on the list--preferably without repeating through both of them.
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Jan 18, 2010
I have a tblVersion that contains the versions of my application:
VersionID Version
VersionID is a bigint primary key, version is a ntext column that holds the current version... I want to be able to pick the row that has the highest version number, but version could be in this format:
MyApplication 1.0.1
If I try to convert that to a int32 it will throw an exception obviously. I would like to know if some of you have a idea how to solve this issue. I could of course make sure the column will only contain numeric values but this gives a little more flexibility.
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Jul 20, 2009
I have two text files which contains are like this[code]..
When the original files find the same values in drill file than it must overwrite the original file the line from drill file. Let say original file contain T230 than it must serch for same value in drill file if it find than it must overwrite the original file line with drill file line. The content of drill file is not fix. It will allways be update according to need.
is that posible to connect two text file?
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Oct 18, 2011
This is a 2 part question about list comparisons. I see lots of threads on comparing two separate lists, but I need to know how to compare values in a single list.
Part 1:I have a bunch of string values that I am first splitting and then adding to two separate lists. The strings look something like this... 3-ABC, 6-DEC, 11-RFG, 6-ABC, 12-ABC, etc... So, with the code below(vb) I am splitting the numerical portion of the string and putting it into myLeadQtys(saved for later). I then take the rest of the string and put it in another list (myLeadVals):
Dim myLeadVals As New List(Of String)
Dim myLeadQtys As New List(Of String)
Dim strMtextValue As String
[code]....
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May 20, 2009
Is there a way to compare values in text boxes?
For example, if I have two text boxes, I want to compare the numbers in each to see which is higher and then commit actions if one if higher.
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Dec 15, 2010
I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.
I need to compare what is in the database table with what is in the datagridview, update the history table for records that exist, and then insert new records.
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