Hi.....
How do i set a listview to only add one item from a combobox?

Example:
In the text file containing the list are "Chicken, Beef, Buffalo", that already exists in listview is "Cow" then the listview will only add "Chicken, Buffalo".

i have here a code for adding items in a listview:

For Each ListedString As String In CType(iData.GetData(DataFormats.Text), String).Split(Environment.NewLine)
    For Each listItem As ListViewItem In MyListView1.Items
        If listItem.SubItems(2).Text = ListedString Then
            Return
        End If
    Next

    If UrlIsValid(ListedString) = True Then
        Dim lvi As New ListViewItem("Normal")
        lvi.SubItems.Add(MyListView1.Items.Count + 1)
        lvi.SubItems.Add(ListedString)
        lvi.SubItems.Add(GetFileNameFromURL(ListedString))
        MyListView1.Items.Add(lvi)
    End If
Next

Please, Help.

Thanks,

Bazzer Respeto

Unfortunately, there is no easy method to use for this. The Contains and ContainsKey (or even Find) methods do not search the listview for a given string. However, you can roll your own as follows:

Private Function InListView(lvw, text) As Boolean

    For Each item As ListViewItem In lvw.items
        If item.Text = text Then Return True
    Next

    Return False

End Function

If you pass this function a listview control and a string it will return True if that string appears in any cell in the first column, False otherwise. For example

Dim found As Boolean = InListView(MyListView, "Buffalo")

I dont get your point. What would you like to do exactly? Tell us the pattern why not adding a Beef as well?

I think the OP is saying that if (for example) Buffalo has already been added to the listview then it should not be added again.

thanks for the solution, Jim.
As I have tried before, the methods that you given didn't work.

Whatever Jim has given it works...add few more lines of code

Private Sub Button7_Click(sender As System.Object, e As System.EventArgs) Handles Button7.Click 'checked on button click
    Dim found As Boolean = InListView(ListView1, ComboBox1.Text)
    If found = True Then
        MsgBox("Exists")
    Else
        'MsgBox("No")
        ListView1.Items.Add(ComboBox1.Text)
    End If
End Sub

Private Function InListView(lvw, text) As Boolean
    For Each item As ListViewItem In lvw.items
        If item.Text = text Then Return True
    Next
    Return False
End Function

Thank you, it's worked.

I place the Jim code in wrong place, :).

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