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,
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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.
View 5 Repliesi 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]....
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)
View 4 RepliesI have a String which contains the following[code]...
give me a VB.NET code for this?
I fail to remove duplicates from my List. What am I doing wrong?
Dim Contacts As New List(Of Person)
...
' remove duplicates '
[code].....
[Code]...
I build up the ItemList array with the above code. How do i remove any duplicates in this array?
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'.
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
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just to finalise this, how can i remove duplicates? i have tried this:
[Code]....
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]....
ListBox1.Items.Remove(ListBox1.Text)
ListBox2.Items.Remove(ListBox2.Text)
I need so that I click the button once it deletes from both listboxes. For example a till... listbox1 had items listbox2 has prices to remove an item I want the price to go aswell with same click... I already have a clear all button.
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.
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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
This seems like a simple question, How do i remove duplicates from a string collection?
View 12 RepliesI 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 RepliesI 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]....
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]....
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]
View 7 RepliesI 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].....
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?
View 7 Repliesi have a problem, i have a
[Code]...
But when i want to delete something in the list, it deslect in the other list, so it don't remove there then i get like
[Code]...
so, now my code is: (part of it.)
For Each item1 In ListBox1.Items
Write.WriteLine(" " & item1.ToString)
Next
[code]....
1) Does this code make text the selected items text? If it doesnt then how would I do that?Dim text As String text = ListBox1.SelectedItem.ToString()
2)How would I make it so that if in combobox.items there is an item with the same text as the listbox selecteditem it is removed? This is what I have and it doesnt work.
If ComboBox3.Items.Item(text) Then
ComboBox3.Items.Remove(text)
End If
So, i have a saved file like:
|Cola
|Ice Tea
1,00 �
1,20 �
Now i would like everything with a "|" symbol for the sense to get in Listbox1 and everything with nothing in Listbox2.
okay i have have a textbox full of names say textbox1 =
austin
austin
john
[code].....
i considering implement something similar to this
where I display links between two listboxes, the links must correctly display when the listboxes are:moved resized scrolled
I have three listboxes with vertical scroll bars. I'd like it so that when one is scrolled, so are the others. However, I can't seem to find a "scroll" event. I tried this:
vb.net
Public Scrolling As Boolean
Private Sub ListBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListBox1.MouseDown
If e.Button = MouseButtons.Left Then
[code]....
It works when you click and drag on the listbox area where the items are, but not when you click on the scroll bar!
I need to get all the different values from my dgv, but no duplicates, and add them as rows to my dataset.for example if my dgv col1 have the following values:
a
b
c
[code]....
the procedure must get the values from dgv1 and add it to a dataset if the values isnt already there.My dataset should have this:
a
b
c
d
e
I am trying to kill the duplicate fields in a DataGridView. I have it alphabetize all the items in the DGV and then compare each item down the DGV as long as it is either equal to or alphabetically lower than the next item in the DGV.Here is the code I'm using:
Do While X < data.Rows.Count - 1
' Compare 2 items next to eachother
compareResult = String.Compare(data.Item(0, X).Value, data.Item(0, Y).Value, True)
' Update the status
[Code]...
As I run it through more largely populated DGVs (200k items), I run into an InvalidOperationException saying that rowIndex=190000 (just some high number) is an invalid value for rowIndex.The error seems to appear more or less randomly.When tested on DGVs with 20k items, it seems to complete fine (though it may just be luck and the error isn't popping up).
