Re-arranging Elements In List(Of T)?

Apr 7, 2011

I got a list of objects. Each object has a property called Z (integer).There will come a point during run-time I will want to re-arrange such objects in my list depending on their Z property. The objects with lower Z go first in the list, and the ones with higher will go last.I have thought of a couple things, like making a new List, then loop through each object in the original list as many times as the amount of objects such list has (so if it has 10 objects, I would loop 100 times), and each iteration will check the Z values. When a cycle is done (for every 10 iterations), I will remove the object with the lowest Z number in cycle and add it to the new List. And so on until the 100 iterations are done.

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Create Local Copy Of A List To Be Able To Change Elements Only In New List?

Oct 26, 2011

This is probably a really basic question - but I have a list of items (custom objects) being passed from one winform (.net 3.5) to another. I want to create a local list to store changes that only get persisted if the user clicks save. Currently if the user clicks cancel - the changes are still applied in the first form because I assume the objects are reference type.I have the save working as it calls a service layer to do the save and then refreshes the other form - but not the cancel.

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App For Copying Elements From One List To Another?

Mar 11, 2012

I want to copy the elements from one list to another.

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Getting A List Of Elements To Load?

Apr 11, 2011

I'm Having trouble getting a list of elements to load. The data is defined like this:

Public Class NavEquipmentMgr
Shared M_ps_NavQuit As Boolean
Shared M_ps_No_Nav_Equip As Boolean

[Code].....

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Remove Elements From A List?

Feb 6, 2010

I have a List of a custom class (barData) that I need to remove elements form based on a date.

The bardata class holds data of stock price information.[cod]e...

Is there a way to do it without looping through each bar as I may have 2000 plus bars for each stock and may have 2000+ plus stocks to look at. It can be done by looping but it is slow.

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Generate Combinations Of Elements Of A List<T> In .NET 4.0?

Jul 13, 2009

I would like a function generate all of the k-combinations of elements from a List of n elements. Note that I am looking for combinations, not permutations, and that we need a solution for varying k (i.e., hard-coding the loops is a no-no).

I am looking for a solution that is a) elegant, and b) can be coded in VB10/.Net 4.0.

This means a) solutions requiring LINQ are ok, b) those using the C# "yield" command are not.

The order of the combinations is not important (i.e., lexicographical, Gray-code, what-have-you) and elegance is favored over performance, if the two are in conflict.

(The OCaml and C# solutions here would be perfect, if they could be coded in VB10.)

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Reflection For A List Properties Elements?

Oct 31, 2010

I am creating a dynamic clone method to be used in my custom classes. I want the clone function to be completely generic, so I do not have to make any changes when I add new properties to the class. I am having an issue with regards to making a deep copy a property that is a List. sample code that will enable me to identify with reflection that a property of my class is a List, and then more importantly the code to loop through the the List elements and copy of each of them. I have been able to identify a property as a List by using the NameSpace of the property type, but I'm not a big fan of that method. Either way, I have yet been able to dynamically loop and deep copy the elements of the property that's a List using reflection.

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VS 2010 HTML Elements List?

Jan 17, 2012

I'm making a bot to auto-reply to my PMs on a website, and I'd like to get all of the HTML elements with a class name 'InboxRow'. I can get the HTML element one at time, but the problem is that these will be dynamic, so the id and amt. of them will always change, so I want to put them in an array, where I can call each one up and perform the rest of my code for it. I just can't seem to be able to figure out how to find all the HTML elements with the class name and put them in an array, and I can't seem to find any tutorials online

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.net - Does For Each Acting On A List Always Visit Elements In The Same Order

Nov 4, 2010

Will the elements in myList always be visited in the same order with a For Each loop (assuming I don't alter the list)?

Dim myList As New List(Of MyElement)
....
For Each myElem As MyElement In myList
' yadda yadda yadda
Next

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.net - Make Array From Properties Of Elements Of List?

Mar 25, 2012

Is there a succint way in vb.net to create an array or similar of each of the properties in a list?

E.g. If I have a list of 'a' and each 'a' has a property 'b', I want to create an array which contains all the 'b's, in the same index positions as the original list.

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Assign Values To Structure Elements In A List?

Aug 19, 2011

I have a user defined structure in a list that I am trying to change the value for in an individual element within the list of structures. Accessing the element is not a problem. However, the compiler complains

"Expression is a value and therefore cannot be the target of the assignment"when I try to update the value.For example:

Public Structure Person
Dim first as String
Dim last as String
Dim age as Integer

[code]....

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Setup A List Consisting Of Arrays Of Two Elements?

Feb 27, 2009

I need to set up a list consisting of arrays of two elements. Simple, right?

Like: (code snippet):

Dim strDataPoint(1) As String '2-element array
Dim lBiasCurve As New List(Of strDataPoint) 'list of 2-element arrays
Dim lPwrCurve As New List(Of strDataPoint) 'another list of 2-element arrays

But this gives me an error msg on 2nd and 3rd line: type strDataPoint is not defined....

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Copying Elements From List Where Frequency Is Custom Class

Sep 21, 2010

I'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.

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Difference Between A Pointer Or A Variable In The Contect Of List Elements?

Apr 25, 2009

Do List's hold the instances of a variable element or just the pointer to the the variable element? My application uses a list of elements, which can be re-ordered at any time, but I need to maintain another list of pointers to those elements, so that the element pointers can be used to access any element irrespective of their order in the main list? the difference between a pointer or a variable in the contect of list elements?

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Linq To Xml Query Returning A List Of All Child Elements?

Mar 8, 2010

I have got an xml document which looks something like this.

<Root>
<Info>
</Info>
<Info>

[Code]...

How can i write a linqToXML query so that it returns me an IEnumerable containing each child element, in this case all five child elements of , so that i could iterate over them. The order of child elements is not definite, neither is number of times the may appear.

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Read All Elements And Child Nodes Of XML In A List Using XDocument?

Jul 6, 2011

I have to get all the Entity Source,Entity Target,Property Source and Property Target values in list respectively.[code]...

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Read The String Which Contains XML Data And Store The Elements In A List?

May 17, 2011

I have a string with xml data.Dim appManifest As String = New System.IO.StreamReader(Application.GetResourceStream(New System.Windows.Resources.StreamResourceInfo(e.Result, Nothing), New Uri("AppManifest.xaml", UriKind.Relative)).Stream).ReadToEnd()

[Code]...

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Use The RemoveRange Function To Remove A Couple Elements From A List?

Feb 2, 2011

I use the removeRange function to remove a couple elements from a list, but the Count of the list seems to be intact, so I assume it didn't work the way I expected it too.... so, how do you remove elements? I mean, reduce the list's Count value ultimately.

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Draw Lines Between Elements In 2 List Views To Bind The Data?

Aug 4, 2009

I am using VB 2008 and wonder if there is a way to draw lines between the data elements in two listviews to bind the elements together?

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List View Techniques - Populate The Corresponding Data Elements On Another Form?

Jul 18, 2011

I have the following "contact" data (exampled below) stored in an xml file.I've created a frmContacts windows form and placed a list box control inside it.I'm new to the list box but plan to have the users manage the list by letting them add, delete, and pick from it. For searching there should also be a sort function/button (by last name then first name).If the user deletes from the list the corresponding data in the file will be deleted.If the user picks from or adds to the list, I'd like to find the best way to populate the corresponding data elements on another form (i.e., in their respective text boxes). This will include the ability to edit/save from this other form too.

<?xml version="1.0" encoding="utf-8"?>
<Rows>
<Row>[code]......

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Ruby Re-create Such List (as An Array) With Such Elements (they Will Be Strings, Booleans And Integers)?

Apr 4, 2011

How would I create a list of elements in VB.NET, save it to a .dat file, and make Ruby re-create such list (as an array) with such elements (they will be strings, booleans and integers)?

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Auto-resizing Wpf Elements With Scroll Bars (Rich Text Box - List Box) Vb

Sep 10, 2010

I'm having a problem where I have elements such as Listboxes and Rich Text boxes that I want to set to size automatically in xaml according to the size of the window, but I only want it to resize to the size of the window and then put scrollbars if the content is any bigger than that.

Unfortunately, the only way I can get scroll bars to work is if I set a specific height of the listbox/rich text box (which does not work because I want it to automatically resize to the height of the grid that it is contained within, which is generally the height of the window (auto).

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Create A Remoteable Object With Method That Sums Up Elements In Array List

Jul 27, 2010

I need to create a remoteable object with a method that sums up elements in an array list. How do i go about it?

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Html - Dynamically Created Elements From Codebehind Need To Be Inserted Between Specific Elements

Sep 17, 2010

I created a method and pass the element type, id, and any inner text that instantiates a new html element. The last statement: Me.Controls.Add(element) adds it to the end of the page, but I would like it to be inserted in a specific position (between 2 divs within a form). What I am describing is very similar to this post on SO here, although it was for javascript.

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Arranging The Checklist Order?

Aug 8, 2009

i am currently doing a checkboxlist that is retrieved from database. is there any way where i can sort the checklist items in a way like those checked itmes will be displayed at the back then those that are not checked will be moved to the top.

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Dynamically Arranging Controls In .net?

Jun 21, 2010

I am looking for the best way to dynamically arrange the location of labels (or any control for that matter) during runtime in a Windows Forms application using VB.net or C# in VS2008.I have a control that displays messages created by users.This control has a panel docked at the top which holds the header information for each message, called pnlHeader There are 8 labels: 4 of them display static descriptions (e.g. "To", "From", "Created Date", "Completed Date")And the other 4 display the relevant data for those descriptions. (Passed in during runtime from a MS SQL 2005 DB).Static labels are named: lblCreatedDateLbl and dynamic ones: lblCreatedDate The application runs on monitors of various size and resolution, therefor I would like for all of the labels to arrange themselves with equal spacing in pnlHeader, based on the current width of the panel.

At first, I had simply created the labels in the Designer and used Anchors (half of the lables were set to (Top, Left) and the other half to (Top, Right)). This solution worked for most scenarios, but did not always provide a consistent solution, so I decided to add the controls in code instead.

I thought it would be easier to work with the labels by creating a panel for each corresponding pair. So pnlCreatedDate would hold lblCreatedDateLbl and lblCreatedDate I wrote 2 methods: 1 to define each label and add it to the relevant panel: Sub AddLabels
and another to determine the width of the panels and set the correct location: Sub SetLoc Currently, AddLabels runs in the constructor after InitializeComponent() and SetLoc is called after the data has been passed in from the database.

I've tried making minor changes and tweaks to the width and size parameters, enabling and disabling AutoSize, but nothing returns a consistent solution, instead either all the description labels are misplaced, or do not appear at all or completely whack locations come up.

Private Sub AddLabels()
'Label Created By:'
lblCreatedByLbl.Location = New Point(0, 0)

[code]....

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Re-arranging Columns In Excel?

Sep 26, 2011

Is it possible to take an Excel spreadsheet and move some columns around? Basically I receive spreadsheets that need to be re-formatted and have the columns shifted, some also need to be deleted. I have no idea how to go about this, is it even possible? It's always the same columns so it's not like it changes from file to file. I know it probably makes more sense to just create a macro but I thought I'd see what was involved in it anyway.

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Arranging Data Reading In From A Database

Jan 9, 2009

Private Sub frmAttendace51_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'clear data set of any existing data
objDataSet.Clear()
'fill schema
[Code]...

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Arranging ListView By Dragging Items

Sep 20, 2009

I'm working on a little program that uses a ListView box. I'd like to know if you can arrange the list by dragging the items within the ListView box. Example: I'd like to be able to just drag the bottom item to the top, or the middle item to the bottom, and so on. I guess I'm just wondering if I can move items around using the mouse by dragging them around within the ListView box.

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C# - Arranging Many Windows Forms On Screens

Jan 14, 2011

Issue : Is there any efficient way to arrange many independent Windows Forms in .Net? I have to display many forms at the same time in my application. It is a graphic charting application, and the number of forms depends of what the user wants, so it has to be dynamic. Is it possible to arrange it like with MDI Layout ?

Example: For example, if user chooses 12 output chart forms, I would like to have them auto-arranged 4x3 on the default screen. Ideally, User could even choose many target screens among the monitors he has.

Why not use MDI: I do NOT want MDI, since my application is multi-screen and I want to leave the opportunity to the user to put his external output chart windows scattered over different screens wherever he wants. But I would though like to have a default arrangement of output windows, without calculating manually screen and forms width/heights by dividing and stuff (Already doing this, it's a real pain). I would like to spare myself this ant-work and focus on business logic.

What I am looking for: If somebody knows an open source library or tool or cool method that could be great. By the way, I found a very useful and handy tool that could help people having the same needs I am formulating here: It is named AquaSnap, but unfortunately code is not Open Source. PS: Again, I Know how to do it "by hand" and assign monitors to forms. It is not the kind of answers I am looking for.

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