To Find Min. Value In A List?
Jul 30, 2011
I have a list of specific class.In this list , a position class is included.And that position class includes X and Y coordinates.I have Current Coordinates and the coordinates in list .I want to calculate the distance for each item in List and find which item has minimal distance.Here is my code :
For Each item As ITEMX In xHandle.ItemList
Dim CurrX As Integer = txt_TrainX.Text
Dim CurrY As Integer = txt_TrainY.Text[code]....
so distance is the distance between my coordinates and the item.I calculate it for each item in list but how do i find the minimal one ?
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Sep 3, 2009
After reading all the examples for list of T exists and Find and find first, none show how to handle multi-property objects. Below is bare bones example maybe someone could flesh out to show how this should be done.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim DatePriceList As New List(Of DateAndPrice)
DatePriceList.Add(New DateAndPrice(Date.Parse("1/1/2000"), 10.12))
DatePriceList.Add(New DateAndPrice(Date.Parse("1/2/2000"), 11.12))
[Code]...
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Oct 13, 2011
i m getting a collection of data in list's object. And from this list i want to get the maximum id.`
Dim objinfo As List(Of AlbumInfo) = objPhotos.GetPhotos_Alb_ID(Me.ModuleId, hdd_AlbID.Value)
Dim Photo_Image As String = ""
Dim str As String = Photo_Image & fu_Photo.PostedFile.FileName.Substrng(fu_Photo.PostedFile.FileName.LastIndexOf("."))
[code]....
this returns the "0"th positions id from Convert.ToString(objinfo.Item("0").Photo_Id + 1)but i want to get the last item's id.
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Nov 4, 2009
I have a simple class called Player. I can add players to it, but haven't figured out how to remove them. I've tried various ways, some compile some don't none work
Public Class Player
Public Name As String
Public Sub New(ByVal name As String)
[code].....
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Aug 12, 2011
Does anyone know where I can find a list of symbols used in VB?I'm trying to place documentation in a program, but I want VB to ignore the line.
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Oct 19, 2010
I have a list of names with corresponding numbers (In this case volume and weight names and their corresponding conversion number to deciliter and gram)
I have been looking how to program something like this in visual basic and came up with a list of class objects in which i could then do a find for the name and then get the corresponding modifier decimal.[code]...
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Feb 22, 2011
I am writing a program using editable list boxes that will then be compared to a string later. I have no problem editing the listbox, but I am having trouble figuring out how to compare the list of things to the string. I envision using either a "for/next" loop or a "do/while" loop.
Mostly, what I need is the way to read the list box one entry at a time, in order.
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Jan 29, 2008
I've been looking at the List(Of T).Find method and cannot figure out why it is useful?
Microsoft's example for using it is as follows:
CODE:
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Oct 3, 2009
Where can I find a list of Virtual key codes? [code]
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Jun 6, 2012
Can't find a drive list box in the tools (2010).
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Jun 10, 2010
I have this VB.Net form and I need to know the names of all the controls on it. I would suppose that Microsoft keeps a list of all the controls on any given form I just don't know how to access it.
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Jul 26, 2010
I have the following setup[code]...
What I would like is a Item property in the collection that I can say [code]...
I know about predicates but what I am struggling with is how to set the criteria of the predicate (i.e passing x,y,z)
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Oct 8, 2010
This Questions has properties QuestionID and QuestionAnswer. While iterating through this List of Question in foreach, I have to find .QuestionID = 12. If I find .QuestionID = 12 then I have to immediately assign a value to .QuestionAnswer = "SomeText" of .QuestionID = 14.
I don't want iterate again inside .QuestionId = 12' to find.QuestionID = 14` again.
Is there any way I can go directly to .QuestionID = 14 using LINQ?[code]...
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Jun 7, 2010
I have an List(of String), i need to find the index of a particular string in that list. I have searched msdn , but i am confused over the predicate methods. I have never used predicates. This i what i have tried
vb
'on button1 click
Dim Heads As List(Of String) = Me.GetSelectedNodes()
Dim tmp As Integer
[Code].....
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Mar 9, 2011
I have class called GroupSelect and made a collection List(Of GroupSelect)().Now I need find to RowNo = 4 in List(Of GroupSelect)() and get GroupSelect object.[code]
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Aug 15, 2011
Ive got two lists (each representing a table in a DB, so they are related). lstTransaction has t_id, date, and cust_id. lstCustomer has Name, and cust_id.For each item in lstTransaction Id like to find the index in lstCustomer where lstCustomer.cust_id = lstTransaction.cust_id.
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Aug 15, 2009
where can I find the full list of VB.Net Exceptions? I saw one similar question in this forum, but couldn't find the answer.
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Apr 14, 2009
how to use ListName.Find. I am trying to find a number in an a list of integers.
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May 27, 2010
In a vb.net application I have a set of integers currently stored in multiple Arraylist (But this could be something different if required)
al1 = {1, 2, 3, 6, 7, 9}
al2 = {2, 3, 4, 9}
al3 = {2, 3, 19}
[code]....
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Mar 20, 2011
In vb.net, I am having myList as List(of myClass) and myData as myClass. So how do I find whether if myList contains myData or not? Currently I am doing it like:
dim myList as List(of myClass) = myClasses.GetData()
dim myData as myClass = myClasses.getData(1)
for each Item as myClass in myList
if Item.uin = myData.uin then
msgbox 'yeah'
end if
next
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Apr 6, 2011
I have a database called BDEP.accdb already connected to a program in vb.net is ok, but I have a problem.I have a list box with the name of the fields in the Customers table but I can not find the code to search this list information starting at a textbox.
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Oct 7, 2009
I gat a problem in the .NET 2 in VB . I would like to use List(Of T).Find method with parameters. in C# v.8 this task is accomplished by using anonymous delegates like:
[Code]...
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Mar 10, 2011
I have class called GroupSelect and made a collection List(Of GroupSelect)().[code]...
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Dec 20, 2011
I'm following this exampleto build an editable GridView control.I have this code in my GridView:
<asp:TemplateField HeaderText="Negócio">
<ItemTemplate>
<asp:Label ID="lblNegocio" runat="server" Text='<%# Eval("Negocio") %>'></asp:Label>
[code].....
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May 16, 2010
I am using VB10 Pro. I am trying to add an MSComm to a project. I have tried to follow this example: [URL] which utilizes VB6 but cannot. Instead I right clicked the mailbox, selected Choose Items, but could not find Microsoft Comm Control 6.0 in any of the tabs. After doing a search I found another example.
From that one you go Project | Add Reference | COM.
But again Microsoft Comm Control 6.0 does not show up in the list. Where is MSCOMM? Doing some further research, I do not have mscomm32.ocx in my C:WindowsSystem directory.
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Mar 21, 2010
I have been trying to figure out how to get my code to work. (It was a homework assignment which has already been turned in but I am determined to get this code to work.)I have a text box titled txtSearch and btnClick.I need to search a list box for a city name and then have it displayed in a message box. If there is not a match then I need to display an alternative message box stating there is no match. City is in the list box starting at 16.The text needs to be case insensitive.I am only getting the message "That is not a valid city." for any entry that I type into my txtSearch even though I know it should be a match.
Here is what I have for code
Private Sub btnFind_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFind.Click
' Declare variables to find text on txtSearch when button clicked
Dim length As Integer = txtSearch.TextLength
Dim value As String = txtSearch.Text.ToUpper
[code].....
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Aug 6, 2008
I have a GridView and some textboxes, etc whose BindingSource is a list of business objects.
Problem comes when my business objects are updated programmatically. My objects implement INotifyPropertyChanged, and I raise the PropertyChanged event when the object is updated. When the object changed happens to be the selected row in the GridView.
I get the following exception: System.InvalidOperationException
DataBinding cannot find a row in the list that is suitable for all bindings.
How can I solve this?
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Oct 2, 2009
I would like to get a list of the VB.net/C# "wide" functions for unicode - i.e. AscW, ChrW, MessageBoxW, etc.
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Sep 15, 2011
I want to check for each item in list box if item exist then add it to listbox3[code]...
but it is very slow if there is way to search for list of items in listbox at once?
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Sep 25, 2011
Is it possible to find a complete object in list of objects?
how to find x in list1 if it exists without comparing a single property like ID ?
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