I have problem in copying array in list box. Array has duplicate values but i want to avoid duplication in the list box. Is there any solution to avoid this duplication? Also in my case duplication in the array is essential but not in list box.
View 1 RepliesI have a program that will compare an array of grocery list items glist and an array of coupon item clist.When I compare the two and if there is a match somewhere in the array I want to have a picturebox visible.When there is no match, I want the picture box not to be visible. [code] The code seems to work great until I come to the else statement.When the code finds a match it displays the picture box and the msgbox without error, but as soon as the message box is cleared, even though i've input it as an ELSE statement, the picturebox goes false again.Does anyone have any idea of how I can "hold" the picturebox to stay visible while the match between the arrays exists?
View 18 RepliesI want to copy the elements from one list to another.
View 4 RepliesI need to copy the contents of one list box to a list box on another form. I've tried a number of ways of tackling this, including copying to the clip board and then to another form.....but with no success.
View 8 RepliesI am having a hell of a time figuring out where I am going wrong in copying the contents of arrays to listboxes.
I am using textboxes to input team numbers and team names.
The code for that is as follows (used in a button after the data has been entered in the text boxes:
Teamname, Teamnumber and numteams have been previously declared as public variables (string,integer and integer) in a module as they are used throughout the project. Numteams has had a value ascribed to it in a previous form
ReDim Teamname(Numteams)
ReDim Teamnumber(Numteams)
Dim thisteam As Integer
[Code]....
I have had to put in the "" for the Teamname variable as otherwise I was getting an error saying "Value cannot be null". I am also not sure what is causing that.
When I do that, I get 0 in the listboxes for all the teamnumbers except the last one which is right and blank strings for the team names except for the last one which is also right.
I am working on a functionality which requires me to copy the last line of a richtextbox into a textbox, then removing certain characters. The code I am trying is below. I have on a form a richtextbox (txtMain), 2 textboxes (TextBox1, TextBox2), and a button (button1). The first time a ran it, it worked perfectly - it selected the last line, copied, pasted it into TextBox1. Then after that first time it didn't do it. Perhaps there is a simpler way to get this last line consistently into the TextBox1. Here's the code. (See below the code for a copy of the text in"Text.txt" file):
[Code]...
Is it possible to read perhaps the first 150/300 bytes of a byte array without having to copy the array to another array of proper size.[cod]e...
View 3 RepliesI'm trying to copy the elements from a List(Of Frequency) where Frequency is a custom class I have made. Everything in the other places seems alright but the problem seems to be with the copying, where it still references the original table, so changing the values of one changes the original. I've tried the List.CopyTo() method and tried converting to and array with List.ToArray and then using Array.Copy but it seems they always change the original. I've also tried a for loop and create and New instance of the classes but that doesn't work either. What I'm using it for is to pass the List(Of Frequency) to a new Task to do multitasking(), if anyone can think of a better method to pass a List(Of Frequency), or an array to to a task and have it not change the original.
View 3 RepliesI'm trying to copy multiple files from a directory, put them into an array, then copy just the 30 newest files(I haven't coded the 30 newest loop yet). I added a list box to the following code just to ensure the all the files are storing into the array properly... they are. When it try's to copy, it renames the first file to .log, then tells me that the .log file already exist. How do I get it to copy and keep the source file name in the destination folder Eventually I'll loop this and grab only 30 of the files.
Here's the code I'm playing with:
Private Sub transferButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles transferButton.Click
[code].....
If I increase the capacity of a given list, or add elements until count>capacity, does this mean the program is actually copying the entire list's contents to a new space in memory (similar to redim preserve with arrays)? If so, than I have really been hurting the performance of my lists, as before I was inserting and adding without a second thought. This seems a strong restriction on the dynamic abilities of lists.
View 2 RepliesI have a copying error with my program. I am trying to copy the internet cache folder, and the error states that some files cannont be copied (read only maybe?) How can i make it copy, or just skip the uncopyable files?
My.Computer.FileSystem.CopyDirectory(Environment.GetFolderPath(Environment.SpecialFolder.Internet Cache), "d:My Documents")
i have issue returning a list in a web method. here is the code
<WebMethod()> _
Public Function getTags(para_parents As String) As List(Of getTypeDetailsByParentName_Result)()
Dim context As New PPEntities
[code]....
the error is
Value of type 'System.Collections.Generic.List(Of SaftyonRoad.getTypeDetailsByParentName_Result)' cannot be converted to '1-dimensional array of System.Collections.Generic.List(Of SaftyonRoad.getTypeDetailsByParentName_Result)'
I am trying to get a count of all the times a byte sequences occurs in another byte sequences. It cannot however re-use a bytes if it already counted them. For example given the string let's assume the byte sequence was k.k it would then find only 3 occurrences rather than 5 because they would be broke down like: [k.k].[k.k].[k.k]. and not like [k.[k].[k].[k].[k].k] where they over lap and essentially just shift 2 to the right.
Ideally the idea is to get an idea how a compression dictionary or run time encoding might look. so the goal would be to get down to just 2 parts, as (k.k.k.) is the biggest and best symbol you can have.
Here is source so far:
[Code]...
How would I go about copying every value of one Dictionary list to another Dictionary list.
Here is what I've done:
VB.net
' Assign values to player pairs enumeration
Private Enum cmptrPairsList
empty = 0
[code]....
I have a class called Car. Car has a bunch of properties i.e. Car.Color. CarService has a method called GetCars(). Within GetCar, I have a loop that appends a List of, you guessed it.. Cars.[code].....
I get: Value of type '1-dimensional array of Namespace.Car' cannot be converted to 'System.Collections.Generic.List(Of Namespace.Car)'. What would be the best way to convert this 1-dimensional array' back into a List of Cars?
I have a variable declared as...
Dim MyList as List(Of String)
I would like to create an array of these lists of string.
Something like....
[code].....
I'm trying to create a Combobox List and I created the following my first try:
Private Sub ComboBox1_DropButtonClick()
ComboBox1.List = Array("LI-3:comparing and contrasting two or more print sources based on
[code].....
I want the Function to accept List(Of String), Array & String and similarly return List(Of String), Array & String respectively. The Function simply adds a string (month) to the input collection. I just want to use it for string, array and list with needing to think of conversions.
[Code]...
was just looking for info on why I can't seem to get the last value from an arraylist of integers, my code looks like this:
'sort items in array
arrayListInfo.Sort()
Dim i, num As Integer
[Code]....
and give i a number like 5 then this works but it just appears to have a problem the last number for me.
I am trying to make a MVP kinda system and I am trying to define and load an array, through the system. Then read it out and it should populate a ListView1 object.I know they are set correct, because the console tells me it's set ok.I know the sample would fill with the same item (a week to be exact) every time i add an item, but that's not the point.Also, is it possible to define the array without the index, i mean now i set it with (6) so it sets 6 blocks for strings, but I would like to be more flexible. Is there a way like in php for example
$item["firstname"]
$item["lastname"]
...
ClientlistItem.vb (definition of the actual item)
Public Class ClientlistItem
Private entry(6) As String[code].......
I have this piece of code
For a As Single = 1 To Picture1.Height - 1
If a < TempArray.Length Then
' Some Stuff here that i really would love not to share
Else
[code]....
I get an error when i try to add the Array TempArray to the List of Boolean TruthBool... The Error Says QuoteObject reference not set to an instance of an object.The Variables are declared like this
Dim TruthBool As List(Of Boolean)
Dim TempArray(10000) As Boolean
I know there are a couple of other problems with this code.. and i have solved most of them in my actual program.. I just cant get this error to go away...
I have two arraylists. The JobArraylist gets adresses from a database table and JobIDArray Gets the ID for those addresses.I'm populating a Combobox with the JobArrayList which is working ok.When I select a an address in the combobox I use the sectectindex to get the AdressID from JobIDArray.My Issue is when I have duplicate addresses the JobIDArray always returns the the ID for the last Address. not the select one.[code]...
View 2 RepliesI have a few running totals and a name associated with these totals and was wondering if an array would be quicker to use instead of storing it in a database.Basically what happens is I need to search a name and if it exists I add the necessary amounts to the totals and if it doesn't exists I add a new record.
View 4 RepliesI'm writing a program and currently have 4 lists called Palette1, Palette2, Palette3, Palette4.Each contain 15 list items of Color type.I was hoping to create an array of lists but have been unsuccessfull in doing so.[code]
View 6 RepliesI am successfully building an array list as shown below:
Dim obj1 As paperCutObj = New paperCutObj
obj1.Model = readLine(0)
obj1.IPaddress = readLine(1)
[code]....
Is there a clear command that I can use on an array list, I try to use clear but something is wrong here[code]...
View 5 RepliesI'm trying to create a small program where someone would select one of five items from a list box (Hot, Medium, Mild, Sweet, Zesty). When they select this, they then enter in a qtyTextBox the quantity they want, ie.e, 1, 2, 3, 5,... Then they the Calculate Button, which then the total would go into the preDiscountLabel box, where it would calculate the amount they want * the sale price. Here is the Price Listing:
Hot - 3.19
Medium - 3.09
Mild - 2.98
[Code].....
I want to load all of the LOCATIONS in the Location table to a Combobox and then for any found locations (in another table) to be deleted from that combobox. Im using a Array list, but can't get the Data reader to write to the Array list.
Dim SQL As String = ""
Dim Reader As OleDbDataReader
Dim i As Integer = 0
Dim LocationArray As ArrayList = Nothing
[Code]...
I cannot figure out how to set an array to one of two sets of numbers (there will be more later), every way that I have tried throws some kind of error. I have tried to Dim the array inside the case statements, but then I cannot use the array in the For Each, which makes this worthless. [Code]
View 3 RepliesHere is what I am trying to do:
TemporaryControlsPart.ChannelList = Split(MainControllerModuleChannelList,
";")
Here is the error I receive:
Error 1 Value of type '1-dimensional array of String' cannot be converted to 'System.Collections.Generic.List(Of String)'.
To me, this seems like a reasonable line of code.