VS 2010 - Adding Items And Checking Contents In ListBox

Sep 25, 2011

So I'm using the following code to add items into my list box, and I'm trying to get it to check the contents of the list box as well.

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
If ListBox2.Items.Contains(TextBox3.Text) Then
MsgBox("Character already exists!")
Else
ListBox2.Items.Add(New LBnfo With {.v4 = RadioButton6.Checked,
[Code] .....

But when I try to compare the two:
If ListBox2.Items.Contains(TextBox3.Text) Then
MsgBox("Character already exists!")
Else

It doesn't show the message box even when the character actually does exist. I believe the problem is that I never do add the item really. I just use, "Return Me.character," which is assigned the value of Textbox3. So I just need to figure out how to check Me.character before returning it.

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How would one go about checking a listbox's items for duplicates? Basically I need to write a program that displays the teams from a text file provided by my instructor, in alphabetical order. I can do that, but what I can't figure out is how to prevent the For loop from adding a duplicate team. What I'm envisioning is:

If teams(i).name is not in lstTeams.Items Then
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End If

I have a program that compiles and works so far, except for the above problem and my alphabetical order (which I can probably figure out on my own:

Public Class danbrockteams
Structure team
Dim name As String

[Code]....

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Private Structure Bets
Public id As Long
Public name As String
Public size As Double

[code]....

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If LocationsSearchTextBox.Text <> "" And LocationListBox.Items.Count > 0 Then
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Dim stream_reader As New IO.StreamReader(OpenFileDialog1.FileName)
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[Code]....

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Private Sub cmdAdd_Click(ByVal sender As System.Object,
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[code]......

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Code:

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[code]....

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vb.net
For i = 0 To lstFiles.Items.Count - 1
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[Code].....

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Dim ItemName As String
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Next
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[code]....

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[Code]...

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[code]....

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[Code]....

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[code].....

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