Here's a list example
SortedList name = test
"nothing" | 0
"something" | 1
How can I go about running a for each loop or something to add each first column in test to, say a listbox.
Listbox should just have listed.
nothing
something
I tried
For Each i In text.Values
lbTest.Items.Add(i)
Next
But that produces:
0
1
1) SortedLIst has a GetKey property: you ask for the nth key in the sorted list of keys and you get it. SortedList(of TKey, TValue) does not have this kind of feature. Why not?
2) SortedList stores values as "object." Is this a less memory-effective method to store values of Double than SortedList(of TKey, TValue)?
How to get the key of a sorted list from the corresponding value directly without using For Each loop. For instance in the following code snippet, I want to get the key value (and not the index) of "Canada", how?
Code Snippet:
SortedList
Imports System
Imports System.Collections
[Code]...
I have a the need for key value pair that I wish to sort so I decided to use a SortedList instead of a HashTable.I am adding the data in the order below to my SortedList which is the order I need it in
Key | Value
--------------------------------
1 "700-800" | List(Of Object)
2 "900-1000" | List(Of Object)
[code]....
The key is a string and the value is a List of objects. The key is representing a time slot that has been concatenated from two integer values and delimited by "-". "700" as a string was 0700 initially an integer.e.g.
Dim key As String = slotTimeStart.ToString() & "-" & slotTimeEnd.ToString()
But once these key value pairs are added to the SortedList they appear in the order
3 "1100-1200" | List(Of Object)
4 "1700-1800" | List(Of Object)
[code]....
Unfortunately I recieve the times slots as two integer values which cannot be changed.Is there any way to force a sort on a SortedList? or is this problem because of the way I am storing my key? Is there a better way to store it?
i can get a value, a key out of a list by using index ,key or value parameters but a kvp as object ?nattelip
View 13 Replieswhen you use the object browser to see the features of a sortedlist elementat is not shown , but because a sorted list inherets features of ienumerable it works, cant that be corrected
View 1 Repliesi have a sortedlist variable called :
Cart
which contains two Cartitem object and within these two objects is a further object called Product.i wish to amend the Product object Property named Quantity
["860"] = {Cartitem}
["861"] = {Cartitem}
When i attempt to update the Cartitem object using the key value it overwrites Cartitem to Product.
Present Update
Cart(key.ToString) = product
results in
["860"] = {Product}
How may i update a Product property without replacing Cartitem object to Product?
I'm making a sortedlist I can read a file into my program but do someone now how to show the output? Its made with classes and they will work. How to show the output of the file because I can't find.
This is the Form1
Public Class Form1
Public lijst As New SortedList(Of String, bankrekening)
'Dim spaar As spaarrekening
'Dim zicht As zichtrekening
Private Sub OverschrijvenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OverschrijvenToolStripMenuItem.Click
FrmOverschrijven.show()
[Code] .....
I have a txt file I' m trying to read a line and add it to the array list, I' m identying the begining of the new line with B and N charecters in the 11 and 12 th positions respectively. Now the problem is that few keys are getting dropped the structure of the file is
10000BN test 1 test2
10000S0000 test3 test 4// these are getting dropped because they are on a new line
10000S 0000 test5
so how do I add these two lines to the record
[Code]....
I have a SortedList
Protected _Items As New Generic.SortedList(Of String, _Control)
I am adding items into this SortedList
_Items.Add(_key, _Control)
[code].....
The code below shows me (I think) that the "for each" loop is about 10% faster than the "i to n" loop, but the "for each" loop creates 567k in new memory? Is this right? Which way is generally most efficient with regards to speed and memory usage? If you want to run this code in VB just add a button and 2 labels to a form.
[Code]...
Just had a question regarding a Windows Form Application in Visual Studio 2008.I was wondering if it is possible to have a RichTextBox and have a < (previous) and >(next) button. When the user selects the Next button, a new blank RichTextBox will be displayed, when the user selects previous button, the prevoius RichTextBox w/ whatever text was in there before will be displayed.
View 2 RepliesIn Visual Studio 2005 Visual Basic, I want to create an exe (without any forms) that will cycle through each file in a folder. I have not found any method of cycling through file names in a folder.
View 1 RepliesNow what I am trying to do is to find cycles in my graph. I have a user drawn graph using lines. Now what I want is to find out if any cycles exist in the graphs. My idea is to find a way to recognize a closed shape and then fill it in. I get this idea from ms paint , where if you draw shapes, the lines must intersect each other and form a cycle for the color to be in.
[Code]...
I am familiar with the VB6 ADO way of dealing with SQL queries and looping through the record set results.
However, what is the correct way to query a server, cycle through the results, and dispose of my query in VB.Net? All the ways I have been using seem to be unstable and crash randomly.
I have been using the following code:
Public Function GetSQLTable(ByVal strSQL As String) As DataTable
Dim table As New DataTable
Dim adapt As SqlDataAdapter
[Code].....
how can I step in a for cycle on the following index?
f.e.
for i = 0 to 10
if (some condition) then next i
next
I have a subroutine with a for i as integer=1 to 128 it should send 128 mouse clicks to another application sometimes it does sometimes it doesn't (it works well until it reaches 64 then the numbers go crazy). i suppose that because vb debugger reports that for my form there are 2 threads running (i have a Core2Duo processor and i've read somewhere that multithreading has something to do with the processor).Is there anything i can do to make the cycle reach the 128 clicks? i've tried setappartmentstate to STA, i've tried synclock monitor.enter nothing works, it fails it returns from the subroutine to where it started from and the next time the same story
View 8 RepliesMy application creates MDI Children programatically. I have a frmBrowser as an MDI Child which I create multiple instances of. There are several other MDI children in the MDIParent. How do I only cycle through the frmBrowser MDI children?
For Each Child As frmBrowser In frmMain.MdiChildren
'perform action on child
Next Child
The code above gives an error for all the Child that aren't of the type frmBrowser.
i need to count the number of iterations which occure in algorithms Blowfish, DES, and RC4.
blowfish i use this class DES i use DESCryptoServiceProvider and for RC4 i use this class Public Shared Function RC4(ByVal bytes() As Byte, ByVal key() As Byte) As Byte()
[Code]...
l try to cycle the number from 0 - 100 using RANDOM methhod.but everytime push the button , the different number come out..how to get same number when the button was press.
View 14 RepliesI have a listbox with items, and when I press a button I would like to go to the next item.I'm having a horrible brain fart and have been for quite some time.
for x = 0 to listbox1.items.count - 1
label1.text = listbox1.items.item(x)
x += 1
next
What events are hit before form_load in a winforms app? Somewhere before the form_load a file called .ini is created and I can't figure out where it's being created. It's just .ini with no name before the extension.
View 2 RepliesI have a loop and I need that at the end of each step of the cycle that it sets in pause for a few secondsHow?
View 3 RepliesI have a loop and I need that at the end of each step of the cycle that it sets in pause for a few seconds How?
View 5 RepliesLet's assume one joins a project near the end of its development cycle. The project has been passed on across many teams and has been an overall free-for-all with no testing whatsoever taking place along the whole time. The other members on this team have no knowledge of testing (shame!) and unit testing each method seems infeasible at this point.
What would the recommended strategy for testing a product be at this point, besides usability testing? Is this normally the point where you're stuck with manual point-and-click expected output/actual output work?
I'm in the middle of porting a VB6 product to VB .NET and .NET Framework 3.5, using Visual Studio 2008. Backward compatibility with customer VB6 legacy code is a requirement.Our VB6 product uses the COM ADODB.Recordset objects extensively both internally and in our API. They port directly to VB.NET if I add an adodb interop reference to my VS 2008 project. My question is how long will Microsoft continue to support ADODB.Recordsets in their languages and operating systems? 2018?I'm trying to make a design decision. Since backward compatibility with VB6 is a requirement, I would prefer to leave them in the .NET code. However, if support will be dropped soon in the near future, then I will use ADO.NET datasets instead, and convert between ADODB.Recordsets and datasets until support is dropped.
View 1 RepliesI have found a list of words [URL] that I saved as a txt. I want to be able to cycle through it with my program I am making. I have a string and I want it to change everytime that timer3 is finished, timer1 will use it again.
An example:
dim theWord as String
timer1.tick....textbox1.text = "It is a " & theWord " day!"end sub
timer2.tick....Whatever I have this doend sub
timer3.tick...theWord = the next word in the listend sub
How would I accomplish this? Anyone better list of words than 850 in txt format.
How can I read data from textbox1 to....n using cycles? Something like this:
1. For n=1 to 50
2. text=textbox_n.text
3. Output=output+text
4. Next
5. Msgbox(output)
The question is in line 2. Syntax "textbox_n.text" is not right. How is it possible to read from textboxes using cycle and variable n?
I have a system whereby I have a SQLite database with around 200+ records. I basically need to cycle through all rows, get the value from one of the columns, perform an algorithm, then re-insert the value.
I know I could do this in a long engrossed way, by getting all data, updating in arrays and such, and then re-inserting via tons of sql queries, however this seems a bit slow and I am sure there is some better way of doing it.
is it possible to cycle through background images from my resources for a button by pressing it the button, what's the simplest code to do this?
View 8 Replies