Remove Duplicates From A List(Of T)?
Feb 23, 2010I fail to remove duplicates from my List. What am I doing wrong?
Dim Contacts As New List(Of Person)
...
' remove duplicates '
[code].....
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Remove Duplicates From Dgv?
Jun 20, 2012i use csv file to populate my dgv. now i wanna eliminate duplicates from my dgv. i knew it could be done using unique datatable. but i wanna eliminate it from dgv not from the dataset or datatable.to understand it in better way- i wanna check column1 if the vales in column 1 are repeated then the entire row must be deleted i.e the duplicate row must be deleted( if column 1 has 2 duplicate values then 1 row must be deleted)
View 4 RepliesRemove Duplicates And Originals?
Apr 28, 2012I have a String which contains the following[code]...
give me a VB.NET code for this?
Remove Duplicates From An Array?
May 31, 2011[Code]...
I build up the ItemList array with the above code. How do i remove any duplicates in this array?
Remove Duplicates From String?
Sep 1, 2009I want to remove duplicate values from a string using VB.NET. If values = "3,40,15,109,15" then I need the end result to be "3,40,15,109". I'm using the code below but receiving the error message 'Value of type 'String' cannot be converted to '1-dimensional array of String' and I'm not sure how to proceed.
Dim values As String
values = lblIDList.Text
'Remove duplicates
values = RemoveDuplicates(values)
[code]....
Value of type 'String' cannot be converted to '1-dimensional array of String'.
Remove Duplicates Lines?
Oct 2, 20112.0 28 Blue (2 14.00 63.0) [2 12.43 54.3] 42111 9275 55111 -1725
2.0 28 Blue (2 14.00 64.0) [2 13.50 55.3] 40611 9275 53611 5775
2.0 28 Blue (2 14.00 58.0) [2 12.21 54.3] 49611 9275 55111 -3225
[code]....
VS 2010 - How To Remove Duplicates
Sep 3, 2010just to finalise this, how can i remove duplicates? i have tried this:
[Code]....
VS 2010 Remove All Duplicates?
Apr 6, 2012I have the following coding in place which basically edits my text file, however with the information that is shown in the text file I want to remove all duplicates, is this possible?
Dim path As String = "c: est1.txt"
Dim sb As New StringBuilder
Dim sr As New StreamReader(path)
[Code]....
Compare And Remove Duplicates Between 2 Listboxes?
Feb 10, 2012Depending 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.
View 5 RepliesRead From Textfile And Remove Duplicates?
Jan 16, 2009I have my code it is able to read a text file and do checks each line if there are 7W and 5L in that particular line, if no matches it will remove that line... 1 problem i face now is that, there are duplicates in my textfile..Im not sure how am i going to remove the duplicate in the text file. I want to know if there is a way to integrate an additional function inside my code to check if that particular line is a duplicate so i can accomplish 2 tasks at 1 time... Since there are about close to 1million records in my text file.
[Code]....
Remove All Duplicates In A Data Table In .net?
Oct 7, 2011Consider my data table
ID Name
1 AAA
2 BBB
[code]....
Final Output is
2 BBB
3 CCC
4 DDD
How can i remove the rows in the data table using Vb.Net
Remove Duplicates From A String Collection?
Apr 23, 2010This seems like a simple question, How do i remove duplicates from a string collection?
View 12 RepliesRemove Duplicates From Dropdownlist With LINQ?
Mar 1, 2012I have a dropdownlist with some duplicate items on it. I intended to remove them by using LINQ, but do not know how to do it.
View 1 RepliesRemove Duplicates In Matches Collection?
Feb 26, 2010I know how to remove duplicates in an array (have a simple function for that) but now I was trying to do the same in a matches collection and I can't get anything to work somehow.
In this case the matches collection has a few duplicates that I want to remove.
Dim matches As MatchCollection
matches = Regex.Matches(sExtractedText, "word=""[dw]{8,30}""")
For Each match As Match In matches
[Code]....
Sort An Array And Remove Duplicates?
Sep 8, 2009I have a semicolon delimited string (e.g. an EMail Address List returned from a database or a textbox). How do I separate the string into an array, sort, and remove duplicates? The code below works to separate the string and sort the results, but doesn't remove the duplicates. I could probably then loop through the array and copy to a new array to eliminate the duplicates, but there must be a better way to do this using the VB.Net Array, String, and Collections handling classes.
Dim s As
String =
"Test; Test8;Test1;Test2;Test3; Test8;Test4;Test5; Test6"
[code]....
VS 2008 Remove Duplicates From A Listbox?
Dec 15, 2009i have a listbox and i need to remove duplicates (that can be more than 2)
i try this way but doesn't work...
For i = 0 To ListBox2.Items.Count - 1
For j = 0 To ListBox2.Items.Count - 1
If ListBox2.Items.Item(j) = ListBox2.Items.Item(i) Then
[Code]....
VS 2008 Remove Duplicates Of 2 Listboxes
Oct 22, 2010the question states im looking to remove duplicates from a textbox in the sense that i have two textboxes like this
[Code]...
My goal here is to remove item 1 and 3 from the first listbox if it exists on the 2nd listbox, ive searched for 30 minutes to no avail, found a similar question on how to do it in vb but still didnt give me a idea on how to do it relating to vb.net also this is more then one instance,
[Code]...
VS 2010 - How To Remove Duplicates In ListView
Jun 7, 2011Ok, I found some code online on how to do this, but they only compare the Listview.item.text, and they don't care what is in the entire ListViewItem. Is there any code to remove duplicates in a ListView that checks to see if all the subitems are the same as well and THEN removes the entry? [Code]
View 7 RepliesVS 2010 Remove Duplicates From Listbox?
Sep 27, 2010I started programming Visual Basic .NET a few weeks ago. I wanted to make a tool to remove duplicate lines from a listbox. I have the following
Dim strItems As New List(Of String) 'Make a list with originals
Dim strDup As New List(Of String) 'This list contains the duplicated lines
For i As Integer = 0 To ListBox1.Items.Count - 1
LabelChecking.Text = "Checking for duplicates: " & i & "/" & ListBox1.Items.Count - 1
Application.DoEvents()
If strItems.Contains(ListBox1.Items(i).ToString) Then
[Code].....
VS 2010 Remove Duplicates From Text File?
Nov 17, 2010I'm trying to make a snippet that will remove duplicate lines from text files. However, I seem to be mixing my for loops up.. does anyone know a simple way that I could do this?
View 7 RepliesMarking Duplicates In A List While Not Sorting
Feb 15, 2012I had a need to mark a listview row if filenames were duplicates for n number of characters from the left. I wrote the following but it smacks of VB6.[code]...
View 5 RepliesVS 2005 : Prevent Duplicates In List?
Feb 27, 2011I am trying to prevent an item from being added to my list this is what i have so far duplicates are being added
HTML
With dtAll
Dim List As New List(Of String)
Dim dtrow As DataRow
[code]....
Adding Items To List Results In Duplicates?
Jul 29, 2009I have this code to return a list of fund sources for our organization.
Dim FundSourceList As New List(Of FundSource)
Dim fs As New FundSource
If results.Count > 0 Then[code].....
The problem is that when I loop through the resulting FundSourceList all it shows is the last value. For example, if I have three fund sources (state, federal, athletic), then when I use this code to loop through all I get listed is athletic, athletic, athletic.
For Each FundSource In FundSources
Debug.Print(FundSource.FundDescription)
Next
So I change the code to this. I moved the creation of the fs variable inside the loop.
Dim results = From result In dsResult.Tables(0) Select result
Dim FundSourceList As New List(Of FundSource)
If results.Count > 0 Then[code]....
This works fine but now I'm creating a new class over and over again. It seems a little inefficient to me. Can I not create the class outside the loop and use it over and over again?
Find Duplicates In List(Of String) In Program?
Jun 27, 2012I have a customers List(of String) on which I am trying to find the duplicate customers.[code]...
View 2 RepliesLINQ VB How To Check For Duplicates In A List Of Objects
Oct 11, 2011I have a list of objects, each with 2 relevant properties: "ID" and "Name". Lets call the list "lstOutcomes".I need to check the list for duplicates (meaning object1.ID = object2.ID, etc.) and set a flag (valid = false, or something) if there is at least one duplicate. Also, it would be nice to send a message to the user mentioning the "Name" of the object, when it fails.I am sure I will need to use the Group By operator to do this, but I am not used to doing that in LINQ, and the examples out there are just not helping me. This article seems to be close to what i need, but not quite and it's in C#.
Here is a starting stab at it...
Dim duplist = _
(From o As objectType In lstOutcomes _
[code]......
help?
VS 2008 Searching List(of String) For Duplicates?
Jun 28, 2010Okay so i have a very large list of string (500 000 strings) i want to check the number of duplicate strings and maybe even isolate the duplicate strings if i can.
i cant find a fast method to do so :S
i tried using a string array (slower than list) takes ~15mins
i tried using list with the code below takes ~10 mins
that wont cut it :S i need something faster.
[Code]...
VS 2010 Searching A List(Of Integer) For Duplicates?
Aug 24, 2009Is there an easy way to search through a List(Of Integer) and find duplicates? Or do I need to do loops to search through it with each number, comparing it to each one?
View 3 RepliesFind Duplicates Within An Array List Of Random Numbers?
Feb 22, 2012I'm creating an application that creates a list of 20 ramdomly selected numbers within an array and displaying those numbers in a listbox. I then need to display the duplicate numbers in an adjacent listbox by clicking the find duplicates button. How would I be able to access those 20 numbers in order to find the duplicates?
View 2 RepliesRemove Items In One List From Another List?
May 2, 2012i am writing a program that reads a excel report from accounting software with our weeks orders on... so basically the program reads a list of around 100 items which all works fine.I also have a database that holds info on each item, when the excel sheet is parsed the software checks to see if any new items have been added to the list that are not on the softwares database. this is where i am having the issue.I have two lists: ItemsOrdered & ExistsingItems.
All the items ordered this week are in ItemsOrdered and all the items not in the items in the database are in the ExistsingItems list. using these two lists how can i find items that are in ItemsOrdered but not in ExistsingItems.
How To Remove From List
May 13, 2011I have a List which gets a Check Class like below:
[Code]...