Remove Duplicates From String?
Sep 1, 2009
I 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'.
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Apr 23, 2010
This seems like a simple question, How do i remove duplicates from a string collection?
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Jun 20, 2012
i 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)
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Apr 28, 2012
I have a String which contains the following[code]...
give me a VB.NET code for this?
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Feb 23, 2010
I 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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May 31, 2011
[Code]...
I build up the ItemList array with the above code. How do i remove any duplicates in this array?
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Oct 2, 2011
2.0 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]....
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Sep 3, 2010
just to finalise this, how can i remove duplicates? i have tried this:
[Code]....
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Apr 6, 2012
I 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]....
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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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Jan 16, 2009
I 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]....
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Oct 7, 2011
Consider 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
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Mar 1, 2012
I 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.
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Feb 26, 2010
I 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]....
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Sep 8, 2009
I 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]....
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Dec 15, 2009
i 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]....
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Oct 22, 2010
the 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]...
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Jun 7, 2011
Ok, 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]
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Sep 27, 2010
I 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].....
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Nov 17, 2010
I'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?
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Mar 25, 2012
I am trying to find duplicates in a string. The code works more than I would. The purpose is to create a jagged array with values and positions like this one:
myString = "1123464263948465475965069068547363532627281901"
jagged= {{{1},{0,1,42,45}},{{2},{2,7,36,38,40}},{{3},{3,9,31,33,35}},{{4},{4,6,11,13,16,29}},.........}
Value Positions
1 0,1,42,45
2 2,7,36,38,40
3 3,9,31,33,35
4 4,6,11,13,16,29 ......... and so on with unique keys and multiple or not values.
My code do this, but looping all over the string there a moment when it repeats values and positions, because already found them earlier. How do I make to keep just the UNIQUES? How do I skip the loop when the value is already in?
My code below
Public Class Form1
Public myString As String = " "
Public jagged()() As Integer
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
myString = "1123464263948465475965069068547363532627281901"
jagged = New Integer(myString.Length - 1)() {}
[Code] .....
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Aug 21, 2009
I have for-next loop that loops 6 times around before exiting. Each time it loops it adds a small number and a space to a string so I end up with a string containing 6 numbers separated by spaces. Whats ends up happening is I get "555 555 666 666 777 777" when I should get "444 555 666 777 888 999". I know for sure it isn't the code that generates or applies the numbers because when you put a messagebox.show at the end of the loop it works perfectly, so it seems to me something is happening to quickly but showing the message box every loop gives it time to catch up. What can I do here?
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Jan 25, 2010
I have a string array Array1 and a string array A2. I want to combine these in a 3rd array A3 but excluding duplicate values. Can this be done through lambda expressions or only through iterating through the array and checking array.Contains()?
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Jun 27, 2012
I have a customers List(of String) on which I am trying to find the duplicate customers.[code]...
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Jun 28, 2010
Okay 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]...
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Feb 22, 2009
I'm trying to get a ComboBox to remove the 6th string in the ComboBox or an index of (5) but it doesn't remove it here is the function I am using:
if ComboBox1.items.count = 6 then
ComboBox1.Items.RemoveAt(5)
End If
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Feb 17, 2009
I made a simple gui whit vb 2005
[Code]...
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Aug 24, 2009
The following code:
If checkboxList.Items(i).Selected Then
.Fields("DESC1").Value += checkboxList.Items(i).Text + ", "
End If
should produce output such as "A, B, C,(space)", which will then be bound to a dynamically created GridView. I would like to remove the last two-char string, that is ",(space)". How can I do this?
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Jun 2, 2009
how do I remove a certain part of a string, but I don't know what it will be, I only know that it will start with: [Code]
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Jan 6, 2011
i have the folowing problem: i made a combobox on my form and in order to add items to it i use a normal textbox and a string in application settings, the textbox add's the item in both the combobox( with this code ComboBox1.Items.Add(TextBox1.Text) ) and the string in application settings with the folowing code:
[Code]....
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