Scope Of .NET's List(Of T).Reverse Method
Apr 7, 2009I've got a simple function that takes a List parameter. While working with it, it copies it and reverses the copy using .NET's List(Of T).Reverse method.
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Method To Reverse Array In A Textbox
Apr 25, 2012Is There Any Method To Reverse Array In A Textbox? i want to reverse the array by line in the textbox [Code]
View 3 RepliesPopulate A List(Of Object) In A Class Method, Where The List Was Passed To The Method As A Parameter
Aug 13, 2011I'm trying to code a class of RandomNumber. One of the class methods needs to populate a "List (Of RandomNumber)" ... which was passed as a parameter to the method ... with 10 random numbers between 1 and 50. DEAD SIMPLE :)
View 6 RepliesExcel Vba - How To Reverse A List
Jul 26, 2011[Code]...
What am I doing wrong ? How Should I correct it ?
VS 2010 Reverse Alphabetize A List?
Mar 11, 2011I have this coding for alphabetizing a list of the 50 states, but how would I reverse the process?
Private Sub btnAlphabetic_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAlpha.Click
lstOutput.Sorted = True
Dim highestIndex As Integer = lstStates.Items.Count - 1
For i As Integer = 0 To highestIndex
lstOutput.Items.Add(lstStates.Items(i))
Next
End Sub
Can't Get Number From List Box To Display In Reverse In Text Box
Mar 10, 2012Build a small application that fills a collection (list) with 10 sequential numbers, and then prints the collection(list) in reverse order, skipping every other member, until the entire collection has been displayed. For example, if the collection contained the numbers 1 through 10, they would print as:
10, 8, 6, 4, 2, 9, 7, 5, 3, 1 The print out should be in that order no matter what sequential numbers are in the collection (list). If it were 21 through 30, output would be 30,28,26,24,22,29,27,25,23,21 and so forth.
Note: you must use a collection - do not write down the numbers directly to produce the output. Loops should be employed but the loop control variable should be used as an index or subscript number. Your code should work even if I change the list of sequential numbers to something else. Remember that indexes count from 0 first -- the first item in a collection has index 0, the second item in a collection has index 1, and so forth.
I've got the first part of the problem, getting the numbers in the list box, done with no problem. It's the second part I am struggling with. I cannot get the numbers (I am using 1-10) from the list box to display in reverse order in an adjacent text box.[code]...
Reverse A String Of Words Without Using The Reverse Function?
Apr 5, 2010I need to reverse a string of words without using the reverse function. This is what I have so far, BUT it only shows the last two letters. For example: if i type "John" it will only give me "ho"
Public Class frmReverse
Dim original As String
Dim New1 As String
[code]....
I need to this without using things we haven't seen in class.
Get Type Of Derived Generic List Class From List Item Method?
Mar 23, 2011Public Class notifierMain
Public Class Contacts
Inherits List(Of row)
Public Sub New()
[code]....
When I debug this winforms application I get curType = "notifier.notifierMain+Contacts+row" I want to the Validate function to know it is in MyContacts. How do I do this?
Passing List (Of ChildClass) As Parameter To Method Expecting List (Of ParentClass)?
Apr 12, 2010I have implemented inheritance for two parent classes called Table and Field. Each parent class has several child classes. In the Table parent class, I created a method that expects parameter List(Of Field).
I get an error when trying to pass in parameter List(Of ChildField) to the method that expects a parameter of List(Of Field). The error message is as below:
Value of type
'System.Collections.Generic.List(Of
com.hlb.icisbatch.data.ChildField)'
[Code]....
Reverse Sorting An Array - Array.Reverse (strTheString)?
Dec 16, 2010I have the array dimensioned as public to the form. I populate the array on Form1_Load.When I click the button btnReversingAnArray the first time all are sorted in reverse except for Wendy and it is the last item shown. ie..(The book I am even shows an image of the list Box and their example also shows Wendy as the last item)
Richard
Michelle
Jay
Harriet
Wendy
Then I do nothing else except I click the button btnReversingAnArray again and then it displays correctly.
Wendy
Richard
Michelle
[code]....
Getting A Method Name And Add It To A List
Jan 4, 2012I am trying to get a methods name and add it to a list. I had a look around and came across actions. So far I have the following:
Protected Function MethodToString(method As Action) As String
Return method.Method.Name
End Function
...
Me.Stages.Add(MethodToString(GetWeightFromSID()))
but it does not work when called as it says expression do not produce a value.
.net - Add Method Of The List Function?
Jan 2, 2010I have a data structure (which is a class) called user_class and I want to load all the users data from a database.Currently I have
While SQLreader.Read()
Hold_user.username = SQLreader(0)
Hold_user.BlahBlahBlah = SQLreader(1)
[code]....
Where return_value is a List of user_class and hold_user is an instance of the same class.
Dim return_value As New List(Of user_class)
Dim Hold_user As New user_class
As the while statement loops through the read data, SQLreader(0),(1) and (2) are updated with new data, however they also appear to be updating the stored values held in return_value....
InvokeMember Method List?
Feb 20, 2012I am using the HtmlElement's InvokeMember function and was wondering if there is a nicely formatted list of all the strings that can be passed into that function.So far I know about these strings that can be passed into InvokeMember:Click, Focus provide a link to a list of all strings that can be passed into the InvokeMember function or write them down?
View 1 RepliesUsing TrueForAll Method In Generic List?
Jun 7, 2009I have a class myClass. MyClass has a property myName. I have a generic list myList(of myClass). I have to check if value of myName in all myClass objects in myList is same and is equal to a string myString. I have created a method:
Private Function IsMatching(ByVal objMyClass As MyClass, ByVal strMyString As String) As Boolean
If objMyClass.MyName = strMyString Then
Return True
Else
Return False
End If
End Function
Now I want to use is TrueForAll method of Generic list. How can I use it ?
If there was No second Parameter in IsMatching method, I could have simply used
myList.TrueForAll(AddressOf IsMatching)
But since there is a parameter strMyString, I dont understand how can I use IsTrueForAll method. How can I use IsTrueForAll method in this scenario.
Error: Expression Is Not An Array Or A Method And Cannot Have An Argument List
Aug 4, 2011i have these 3 sets of code that are giving me INT() errors. Error: Expression is not an array or a method, and cannot have an argument list.
Code1:
Private Sub Form6_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim Browser As New WebBrowser
[code]....
Fastest Method To Load A List Into ListView Control?
Aug 14, 2011When ListView is not in Virtual mode the following method seems to be the fast method to load a large list into ListView:
Dim items As New List(Of ListViewItem)
Dim alllines as String()=System.IO.File.ReadAllLines("FilePath")
For each line as string in alllines
Dim item As New ListViewItem
item.Text = line
items.Add(item)
Next
ListView1.Items.AddRange(items.ToArray())
List Fonts Used By A Word Document (faster Method)?
Mar 10, 2011I am working on process for validating documents to make sure that they meet corporate standards. One of the steps is to make sure that the Word document does not use non-approved fonts.I have the following stub of code, which works:
Dim wordApplication As Word.ApplicationClass = New Word.ApplicationClass()
Dim wordDocument As Word.Document = Nothing
Dim fontList As New List(Of String)()
[code]....
Load List Method Locking Text File
Jun 14, 2010[code]I load a text file to a list box and if I try to modify or save over that same text file I get an access violation error. How can I load a text file and release all permissions/holds on that file?
View 4 RepliesStrongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?
Oct 19, 2010Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
.net - Can The Select Extension Method Project To A List Of Instantiated Objects
Mar 24, 2011I have two lists declared as follows:
Dim lstDBItems As New List(Of DBItem)
Dim lstAppItems As New List(Of AppItem)
I am trying to do something like this:
I've a function which returns List(Of AppItem):
Function GetAppItems() As List(Of AppItem)
'...
End Function
In the above function I populate lstDBItems and then write the return statement like follows:
Return lstDBItems.Select(Function(x)
dim oItem As New AppItem()
oItem.Property1 = x.DbProperty1
[Code]....
The weird thing is the code compiles, but on rumtime I get a type case error.
.net - Generic List Extension Method ForEach Stopped Working?
Dec 16, 2010I have a custom list that inherits Generic.List and it has a method for deselecting all of the members named DeselectAll It has looked like this for a few weeks and has worked fine.
Public Sub DeselectAll()
MyBase.ForEach(Function(p As Publipostable) p.ModeEnvoiChoisi = Nothing)
End Sub
Today, it stopped working ?!? I reverted to an earlier version using delegates and that works fine...
Public Sub DeselectAll()
MyBase.ForEach(AddressOf DeselectModeEnvoi)
End Sub
[code]....
Edit: Stopped Working meaning it no longer sets the property p.ModeEnvoiChoisi to Nothing on each item in the list. The DeselectAll method gets called, but all the items retain their previous values...
Array Of Structures Method - Get The File Read And Printed Onto A List Box?
Apr 17, 2012These are the directions for the assignment.So far I am able to get the file read and printed onto a list box.The book we have for the class does not clearly talk about using the array of structure method with formatting an imported text file.After that I'm pretty much having a bit of trouble with everything else.I know I can figure most of it out but what I'm having a big amount of trouble with is the array of structures that he wants.I know that when I have the file imported that I need to save it temporarily and go through it and at every ":" put it in an array and save that spot and then keep scanning through the file. I know it is going to be a for loop using the index to count through but I'm not sure if how to start it.This is how the text file that he wants sorted out looks.
Ally Gators:Tim Tebow:240:280:250
Ally Gators:Albert Gator:150:175:222
Ally Gators:Joe Cool:195:220:217[code]...........
C# - From A List<object> , ToString() Them Just When They Are Primitive Types Or Have This Method Overridden??
Feb 15, 2011Given a list of objects, I'd like to print a string version of them just in case the object.ToString() result is a relevant string.By that I mean I don't want to get things like:
obj.ToString() -> System.Collections.Generic.List`1[MyLib.Dude]
obj.ToString() -> System.Collections.Generic.Dictionary`2[System.Int32,System.DateTime]
obj.ToString() -> System.Byte[]
But I want to get things like:
obj.ToString() -> Hi
obj.ToString() -> 129847.123
obj.ToString() -> Id = 123
What should be the best way to implement this in a method:
Public Sub PrintInterestingStuffOnly(ByVal coolList as Ilist(Of Object))
For Each obj in coolList
'insert solution here
[code].....
C# - List All Invocations And Hardcoded String Parameters Of A Method From A .Net Assembly?
Nov 24, 2010For example, assume that in my assembly, in Namespace A, Class B, there is an instance method with the following signature: void Test(string someString, int someOtherParm, string someOtherString ); This method is called multiple times, from multiple places in the assembly. I would like to be able build a list of all invocations of this method and the value of the someString/someOtherString (assuming they are hardcoded). In other words, I like to extract a list of calls like the example one below, if they happen in the assembly somewhere: Test("some text", 8, "some other text");
View 1 RepliesGetting Method For Loading CheckedListBoxes And Saving Checked Items To List?
Oct 26, 2011I gather case info from a DB table into a list(of T) list and display it in a checkedlistbox. When an item in the checkedlistbox is selected (highlighted, not checked), the selectedindexchanged event then retrieves account information from the DB for that case and loads the different accounts for that case in another checkedlistbox.
My issue is figuring out the best way to save the different items that are checked in the accounts checked list box. Since the accounts are loaded dynamically given the selected item in the cases listbox, what would be the best way to save which accounts are selected for each case?Below is my current method of loading the listboxes and selectedindexchanged procedure. I'm fairly new to programing and this is how I was taught load most controls, by list after saving to the list from the DB (which gets very complicated when you have to keep relations between items in separate lists).
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim CasesList As New List(Of String)
CasesList = Db.GetAccounts(CDbl(txtAccountBalance.Text))
[code]....
Search A Generic List - Keep Getting:Delegate To An Instance Method Cannot Have Null 'this'?
Feb 16, 2009I'm trying to search a generic list of 'User' business objects which has a property called 'Username': If (From u In colUsers Select u.Username Where Username.Equals(strUsername)).Count > 0 ThenI keep getting:Delegate to an instance method cannot have null 'this'.
View 16 RepliesUsing List(Of T).ForEach Method To Update Values Not Working As Expected?
Aug 8, 2011I have the following code,
PB.ForEach(Function(x) x.Cost = GetPartCost(x.PartNumber, x.Units, x.Cost, FB))
Return PB.Sum(Function(x) (x.Cost * x.Qty))
However it always returns 0. I've checked and the GetPartCost function executes and returns a non-zero number but the list item cost properties are never updated.The property is just a simple property,
Public Property Cost() As Double
Get
Return _Cost[code]....
If I set a breakpoint in the Set of the property, it never gets hit.
C# - Class Name And Method Name Dropdown List Is Missing (visual Studio Setting)
Sep 17, 2009Does anyone know how to get my class name and method name dropdown lists again? It's the dropdown lists that are usually above the code. It's just a setting but i can't seem to find it. I don't want to reset my setting btw. I shouldn't have to.
View 2 RepliesCreate A Remoteable Object With Method That Sums Up Elements In Array List
Jul 27, 2010I need to create a remoteable object with a method that sums up elements in an array list. How do i go about it?
View 1 RepliesGet List Of Table Fields When Using A Class (function Or Method) In Design Time?
Aug 2, 2010Let say I have a function inside a class which require 4 parameter (table name,field name,field value, return field) When I use this function my form, such as
myclass.Search("customers", <-- after pressing the "," a popup list will be displayed that contain all the fields in "customers" table.