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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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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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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Copy List(Of T) Into An Independent List(of T)

Sep 23, 2009

I have to collection objects as follows Dim List1 As New List(Of clsTimesheet_Detail)
Dim List2 As New List(Of clsTimesheet_Detail) I have filled the List1 and now want to make an independent copy to the List2

[Code]...

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Create A Toggle Button That Switches A List To A Range And Then Back To A List If Needed?

May 14, 2009

II am trying to create a toggle button that switches a list to a range and then back to a list if needed. I am able to get it to do both but when I add an item to the list, convert to a range and then convert back to a list it leaves off the last items I entered.I tried to work in a code to select all cells but I must not be putting it in the right place.This is what I have so far:

ActiveSheet.ListObjects.Add(xlSrcRange, Range("$A$3:$AE$7"), , xlYes).Name = _
"List1"

I realize the problem is the $AE$7 (the $A$3 is correct)

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Create A List Of List In That Would Like To Work On Multiple Accounts At Same Time

Oct 24, 2011

i am trying to create a list of list in that i would like to work on multiple accounts at the same time. lets say i have 5 accounts. every account has a seperate name. each account has a few fields. so i though of having a list of bookkeeping (with 5 accounts) and a list of accounts (with expense, income, tax, status, etc as fields). [code] and if the idea of using list of list works how do i loop through both lists.

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Create List Of Child Objects From List Of Parent Object?

Jun 2, 2011

I would like to create list of child objects from list of parent object. Like If i have list of bookingroom which has one member room then i would like to create list of room from it.

eg. code:

Dim BookingRoomList As List(Of BookingRoom) = New List(Of BookingRoom)
Dim RoomList As List(Of Room) = New List(Of Room)
BookingRoomList = BookingRooms.FillGrid()

[Code]....

Is there any short cut method instead of iterating over for earch?

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.net - Create New Distinct List(of T) From Existing List(of T) Using LINQ?

Jun 1, 2011

How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.

Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}
).Distinct()
_columnList = New List(Of CheckBoxListItem)(tmpQryColumn)

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Create New Distinct List(of T) From Existing List(of T) Using LINQ?

Mar 12, 2010

How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.

Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}

[code]......

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Linq - Create A List Of Integers From A List Of Objects?

Nov 23, 2011

I'm trying to create a list of days(integer) from a list of dates(date).

I tryed to do this....

[Code]...

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VS 2005 List(of T) - Create A List To Hold More Than One Control Type Or Create A List For Each Control Type?

Jan 20, 2011

If I create a list for a TextBox:

[Code]....

I am able to only add controls that are of type TextBox. My question to you is, can I create a List to hold more than one control type or do I have to create a list for each control type?

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Create An Array Of List (not Arraylist) From A List?

Dec 15, 2009

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].....

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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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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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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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List Of Local Variables

Feb 6, 2010

I am using a lot of variables in my code and like to have them listed or printed. How can I do that?

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