VS 2010 Link Items In List?

Mar 8, 2012

I have two string lists in VB.NET 2010, one with questions and one with answers:

questionlist.Add("When shall we meet?")
questionlist.Add("Let's meet at eight")
questionlist.Add("Shall we meet in front of the bar?")

[Code]....

When a button is clicked the program will check if the answer matches the answer in the list. The problem is that I need it to pick the corresponding entry from the answer list to check if the answer is correct. How can I do this?

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Link :: Excluding Items From Different List Types?

May 18, 2009

Is there any way to select items in a list that aren't contained in another? For example:list1 = From t In list1 Where Not list2.Contains(t.column1)That gives me the error:Value of type 'Integer' cannot be converted to '<anonymous type>'which makes sense, since list2.Contains is expecting the same type as list2. However, the list types are different. I want only to select based on column comparisons.

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VS 2010 Return Items In A List Before Returning The List?

May 23, 2012

That was probably bad title, but I'll illustrate what I'm trying to do. I have a method in a class that I need to call several times. The method returns a List(Of String). I'm just grabbing some information from a database.

VB.NET
Public Function GetTestList() As List(Of String)
Dim int As Integer = 0

[code]....

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VS 2010 Transition To A Different Link (from A List) When The Timer Runs Out

May 31, 2012

I'm making a browser type program and I want it to transition to a different link (from a list) when the timer runs out.

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VS 2010 - Removing Items From A List (of T) With For Each

Dec 14, 2010

Public Structure ReportOrderType
Public ReportName As String
Public ReportDate As Date
Public SaveFile As String
End Structure
[Code] ....

Basically, I have a list of reports. In one place they get ordered, and later on the program looks to see which ones have come back -- see if the .SaveFile exists on disk. If it exists, then that report gets processed, and then I want to remove that item from the list of reports-on-order. However, I get an error message back that by doing the .Remove(R), I've changed the list itself & things won't go well with the rest of the For Each loop, which makes some sense.

When I get to this routine, the list of ordered reports will be something from a couple of dozen or less, and some number of them (perhaps zero, perhaps all, probably a few) will exist & be processed & then should be removed from the list. How should I go about accomplishing this? This is my first time working with List(of t) as a Visual Basic tool; everything I've used in the past has been with arrays, and I can do this there.

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VS 2010 Checking Items In A List?

Mar 13, 2012

I have a checkedlistbox with numbers in it and I'm trying to load a list of numbers from a database and check all of them (they should all be in the checkedlistbox).

I was trying to do this by loading all the values into a separate listbox using my own subroutine (I know that part works) and then finding the corresponding item on the checkedlistbox, like this:

Dim ItemName As String
For Each item In ListBox1.Items
ItemName = ListBox1.GetItemText(item)
If CheckedListBox1.Items.Contains(ItemName) = true Then
CheckedListBox1.SetItemChecked(CheckedListBox1.Items.IndexOf(ItemName), True)
End If
Next
End If

But this doesn't work: It never returns a match, even when the item is definitely on the list. How do I make this work?

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VS 2010 List (of T) Removing Items?

Mar 7, 2012

I have the following

Public itemArray As New List(Of ItemArrayStructure)
Public Structure ItemArrayStructure
Dim DisplayText As String
Dim Checked As Boolean
End Structure

If I know the DisplayText of an item in this array, how can I remove it?

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VS 2010 : Make A List Items Property?

Nov 23, 2011

how to create a property like this:[URL]

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VS 2010 ComboBox List Items Still Exist?

May 2, 2011

When i use the code below to delete an item from a comboox, the text of the combobox deletes but the item still exists in the list

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VS 2010 Storing Data Along With List Box Items?

Sep 19, 2011

What I'm trying to accomplish is first of all, adding items in a list box, but while doing so, store data into that item so when the user clicks on it, the data will be brought up into the correct text boxes.

My idea on how this will all work out has to do with array lists. I'm thinking each time an item is added to the list box, an array list is generated containing all the data from the text boxes. The array list would be named as the text of the list box item.

So then when the user clicks on one of the items, it can find that array list easily because of the selected index, and then update the text boxes with the data.

Is the way I'm thinking of possible? If not, or if there is an easier what, what would that be?

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2010 Express Items Donot Display In List Box?

Nov 15, 2011

have a project due tomorrow and this is the first part I am so close to getting the answer but when I click display nothing appears in the list box.txtLetter.text is the letter I input from A to Z and Display is what needs to be displayed in the list box.The function selects a letter and finds the letter in an array an

Option Explicit On
Option Strict On

[code].....

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VS 2010 Program To Check The Number Of Items In A List Box?

Jul 6, 2010

I want the program to check the number of items in a list box, then send use that number to form a FOR loop and send each to the serial port individually. It actually sends everything, but the program always crashes after the last one saying that the sdprintcount variable is an invalid number for the index. I don't get it as this happens no matter how many items are in the list, and it always crashes on the last one. It sends it, but then it says the index number is invalid.

*********************************
Dim sdmods As Integer
Dim sdmodsp As String
sdmods = sandwichmodlist.Items.Count

[code]....

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VS 2010 : Adding Selected Items In List Box To Multi Picturebox?

Aug 9, 2011

building simple program that i could print index pictures to 11x17 size paper. and came across with listbox multi items selected and wanted to add them to different picture boxes?

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VS 2010 : Display Distinct Items From A Column In A Checked List Box?

Mar 6, 2012

I want to display distinct items from a column in a checked list box then make a selection or selections and perform commands based on info from a second column in that database the database is a small Access 2010 database in the application directory right now I added the data source and items dont display even though I selected that source in the checked list box properties

Dataset = MyDataSet1
CheckedListBox = MyListBox1

I tried it with a combo box and it shows items but includes duplicates, did I setup the datasource wrong?

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VS 2010 Make The Download Manager Know It Is Link To Downloadable File As Opposed To Something Like Link To Another Webpage?

Dec 4, 2010

I'm using visual basic 2010 express..I'm building my own web browser and want to add a download manager.I have been able to build one that will download a file if I type the file location into a text box.What I'm trying to figure out is how to have the download manager open when I click on a download link on a web page.How to make the download manager know it is a link to a downloadable file as opposed to something like a link to another webpage?

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Determine If Property Is Generic List<of T> Via Reflection And Loop List Items

Oct 1, 2009

I'm looping all the properties in an object via reflection:

For Each p As PropertyInfo In values.[GetType]().GetProperties()
If p.CanRead Then
'Do stuff
End If
Next

how to determine whether the property in question is a generic List(Of T)? If it is I need to loop the list itself.

I've experimented with GetType and TypeOf but have not managed to get anything working.

To clarify, I want to keep this generic. I do not want to specify the type of T, I need to loop the list items and call the ToString method on each item. T could be one of a number of different types (application specific reference types). Is it possible to do this without specifying types?

(VB.NET 2005 with .Net 2.0)

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Placing Selected/unselected Items In Checked List Box Into List Boxes?

Mar 16, 2011

This program is supposed to allow the user to check items in a checked list box. If the item is checked, it goes into the Completed List Box on the right. The program then adds the unchecked items to the Pending list box on the left. I keep getting placement values (e.g. O,1,2) instead of the strings (e.g. "Key Returned") in the list box results (see photo attached)

Public Class frmCheckOut
Dim i As Integer
Dim cleaning As String = "Cleaning Inspection"
Dim damage As String = "Damage Repaired"

[code].....

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Shuffling Items Inside A Movie List / Need To Delete Half List

May 16, 2011

Another program I am working on for fun, I am basically shuffling a list inside a listbox, what I want to do is delete the rest but not sure how to go through with that. At the moment I have this: [code] Just contains the code, declarations outside weren't included.So anyway, once clicked, it will call on the function to basically shuffle in a for loop, I was wondering if I should (or how should) create another function and call it in the click button or have just a loop in the click button so it deletes half the list. What I am doing is I have 20 list of items, I want the program to shuffle the items and then deleting the lower 10, meaning, if I had 10 items and wanted 5 top, I'd want: 0, 1, 2, 3, 4 and deleting 5, 6, 7, 8, 9.

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List.count While Adding Items To The List Increments Returns 0

Jul 20, 2011

I am attempting to read the results from a SQL query into a List(Of) and I can see the List.count while adding items to the List increments, however in another part of my code when I am attempting to read the List the List.Count returns 0. My List is as follows:

[Code]...

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Dynamically Generate List Items To An Unordered List In ASP.NET?

Nov 27, 2009

I have an error panel that is subbed in to a page if an error goes wrong to gracefully handle and display errors.Currently, I am just appending the error messages to a string and pushing that to a label. If you have multiple errors, this gets messy.I'd like to push each error to a list item in a bulleted, unordered list.How can I dynamically generate, from a vb codebehind file, new list items inside of an undordered list element?

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Finding Items In One List That Aren't In A Second List Using Linq

Jan 25, 2011

I have two generic lists, named ListA and ListB. Both ListA and ListB could potentially have duplicate items. What I would like to do is use LINQ to grab the items in ListB that are not in ListA, but I'm unsure how to do so.

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VS 2008 Search Item A (from A List Of X Items) In List B?

May 5, 2010

i want to search item A (from a list of X items) in list B but i want to get the item not found example Search ITEM A in LIST B if not found then return a print....if found continue with ITEM B..and so on.

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List Box Text Box Link?

Feb 2, 2009

I have a list box and a text box on a form. What I want to happen is when a user clicks an item in the list box the selected item will be displayed in the text box. I am using object data sources. Here is the code I have so far:

Imports System.Data.SqlClient
Imports CreditCardData
Public Class frmModifyCreditCard
Dim creditCardList As List(Of CreditCard)

[Code]...

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Comparing An Item In A List Against Other Items In The Same List In .NET?

May 30, 2011

I have a List(Of MyObj), and I want to iterate through that list and compare each element to all other elements in the same list, excluding (if possible) the same element. I have a solution that works, but it's slow and uses double For loops. It may possibly have also summoned Cthulhu from his sleep. This below is a sanitized version of what I have:

Dim MyList As New List(Of MyObj)({Obj1, Obj2, Obj3, Obj4, Obj5, Obj6})
If MyList.Count > 0 Then
For i = 0 To (MyList.Count - 1) Step 1

[code]....

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Getting List Of Items Not In Parent List Using LINQ

Mar 28, 2011

I am writing app in vb.net

I have two variables one with list of RoomRate and other with list of RoomTypes.

We have RoomRates and RoomTypes linked with RoomTypeInfo variable insite the RoomRate.

So how do i find the RoomTypes which donot have the RoomRates Defined.

My Sample Code:

class RoomType
property UIN as integer
property Title as string
end class

[Code]......

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How To Test 1st List Box If It Has Items More Than Other List Box But By One Item

Nov 15, 2011

I want to know how to test the 1st list box if it has items more than the other list box but by one item, here is what i have: If lstInvisibleTv. Items.Count > lstInvisiblePc.Items.Count Then it works good if the lstInvisibleTv list box is greater than the other list box by one but it also works if it is greater the other one by one or more which I do not want. I want it to work just by one.

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Link Item In Drop Down List To Image?

Nov 15, 2011

i'm new to vb.net.is it possible to link item in drop down list to image? for example if i click "computer" in the drop down list, the image of the computer will appear. sorry if my question sounds silly. i'm really a newbie in vb.

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Link To XML - Determine If An Element Exists In A List?

Apr 27, 2012

I am working with LINQ to XML in VB (although answers in C# are great, too). First off- my code works, so this is not critical. However, I can't help but think that what I'm doing with conditional logic should already be doable using the LINQ query itself. Here's what I've got:

'Get the Description elements in the ResultData section where the value is "Op Code"
Dim opCodes As List(Of XElement) = (From c In xdoc.Descendants("ResultData").Descendants("Description")
Where c.Value = "Op Code"[code].....

Please don't be too critical of my method of locating the sibling nodes- the XML files are produced by a third-party testing device and this is the only generic way to get the values I need. What I'm really looking for here is a better way to handle the If block.

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Opening Link On Click In Favorites List

Jun 12, 2009

Every time I click on a link the favorites list it doesn't open the link it just ADDS the current page to the favorites list. I want to have it so when I click on the favorites tab I want to have the button in there that says remove from favorites instead of having it as a separate button.

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Can Not Link Two Tables Together Using A List Box And Data Grid View

Jul 13, 2009

I am trying to write the code needed to link two tables together. One table is a list box and the other table is a data grid view. What would the example of the code needed in order to link these tables together so that each time you click on an item in the list box, the data grid would then show the corresponding information that matches up with the selected item.

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