I used an array for collecting data throughout my program. With "Redim Preserve" I increase the size along the way. However I understand that this method is not really efficient and recommended is to use: List
So I tried (simplified here):
[Code]...
But the line: "ExtInfo(indx).Done = True" produces an error: "Expression is a value and therefore cannot be the target of an assignment."Clearly I don't understand fully the concept of "List(Of T)"...
I 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 RepliesHow can i add an array on names in a list box And be able to add and delet name in a listbox ps sence i just fond out .net cant mke control array ill use listbox with an array of names in it
View 2 Repliesnew to Arrays/List and not sure how to use them properly
Dim deck() As String = {"Ac", "Kc", "Qc", "Jc", "Tc", "9c", "8c", "7c", "6c", "5c", "4c", "3c", "2c", "As", "Ks", "Qs", "Js", "Ts", "9s", "8s", "7s", "6s", "5s", "4s", "3s", "2s", "Ad", "Kd", "Qd", "Jd", "Td", "9d", "8d", "7d", "6d", "5d", "4d", "3d", "2d", "Ah", "Kh",
[code].....
I am working on a Card game, and i have a little question. I want to put all the cards in a array or list. The problem is that the list need to be shuffled/randomised. But it should also be able to shrink. Witch of those 2 is better to use? And how can i shuffle them?
View 7 RepliesIs it possible to have a two-dimensional array/list/collection such as the following. The first dimension is to have 2 elements, 0 and 1. The second dimension I would like to be able to have a different number of elements for each of the elements in the first dimension. To explain better, I'd like X in array (0, X) to go up to say 4 and Y in array(1, Y) to only go up to say 2.
So there would be:
array(0,0)
array(0,1)
array(0,2)
array(0,3)
array(0,4)
array(1,0)
array(1,1)
array(1,2)
But no array(1,3) or array(1,4).
I'd also need to be able to use Redim Preserve to increase the size of the second dimension for each of the first dimension's elements.
i read data from a textfile into a one dimensional array (string()) and refer to that later on to build a new list with just the lines i want. using chartData as New List (of String) I can load the List collection just fine. Now, I want to send the output to a table so I can bind it to a datagrid. using Split and AddRange breaks the one dimensional data up into new rows but I want this sort of thing:
"Row0 Cell0"->"Row0 Cell1 "->"Row0 Cell3";<line break>
"Row1 Cell0""Row1 Cell1"Row1 Cell3;<line break>
Note I provided for characters that can be used in a split function (-> and vbTab), which works, but the split in the List gives me a one dimensional array.
I have an array of integers (5 x 5). Is it possible for an index to have a a list of numbers?For example, Row3, Column 4 has 10, 4 52,10 Array (3,4) = 10,4,52,10
View 4 RepliesI have this .txt file with 5 lines, let's say:
I
Have
An
Easy
Question
If I wanted to add those lines to an array list position, how would I do that?
I have seen and used Text.split with a single delimiter such as " ",-","-".". However I cannot find a method which allows multiple delimiters. I need to be able to split a richTextBox's text into an array list.
View 14 Repliesi 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]...
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 am trying to create an list or an array of a class.Here is my "Ingredient" class that I am trying to create a list of:[code]In my "recipe" class, I am want to create a list (or array) and I am drawing a big blank on how to do it. Can anyone point me in the right direction?
View 2 RepliesI'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
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 Replies