How do I place a temporary combobox or textbox in listview?

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I was using a program called personal ancestry file and liked the setup they had for adding or updating information. They had one column (1st) with the name the columns of a database (full name, data of birth, date of death, ....etc) then the second column was where you entered the information, for instance,

column 1              column 2
Full name:            Smith, Steve
Date of birth:        12/12/2012
Date of death:        12/12/2017

the design is interesting and the flow is great. it only showed a textbox or combobox for which ever column I was in. I could tab over or use my mouse to go to whichever column I wanted to. once I left one column and went to the next then the textbox or combobox would disappear and be displayed in the new column.

I can add a textbox to the specific location of a listview, however, it permanently adds it to the listview instead of being displayed only when on that column or cell. that code is:

VB

Private Sub ListView1_MouseDoubleClick(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseClick

For i = 0 To ListView1.Items.Count - 1

            With txb
                .Name = ListView1.Items(i).Text.ToString.Replace(":", "")

            End With

        Next

        txb.Location = New Point(ListView1.SelectedItems.Item(0).SubItems.Item(1).Bounds.X, ListView1.SelectedItems.Item(0).SubItems.Item(1).Bounds.Y)
        ListView1.Controls.Add(txb)

        ListView1.SelectedItems.Item(0).SubItems.Item(1).Text = txb.Text

        If Not String.IsNullOrEmpty(ListView1.Items(0).SubItems(1).Text) Then
            txb.Hide()
        Else
            txb.Clear()
            txb.Show

        End If

 End Sub

What I have tried:

I have tried to use a listview.controls.remove(txb), but that did not work the way I wanted it to.

I have now tried the hide/show method. It semiworks. Problem is when I first move to another subitem the text gets added to it instead of the one I was trying to add text to. Another issue I am having is with the txb.clear, I was hoping that I could reuse the text in the subitem cell and clear text data in the textbox before going to the subitem.

Any suggestions?

Posted 19-Apr-18 13:15pm

Member 11856456

Updated 20-Apr-18 19:22pm

Wendelius

v5

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Wendelius · Accepted Answer · 2018-04-20T19:20:00

One thing is that if you have code that should remove the text box, you didn't show it. Have a try with something like

When a listview row is clicked (not double clicked), first check if there is a text box in the window level variable
If there is, hide it and get rid of the instance
After that create a new text box and store it into a window level variable

If not really needed, I wouldn't try to reuse the objects since it just introduces unnecessary complexity into the logic.

ADDITION

Consider the following example. It contains a lot of assumptions so modify it based on your requirements

VB

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Dim a As ListViewItem

    a = Me.ListView1.Items.Add("One")
    a.SubItems.Add("1")

    a = Me.ListView1.Items.Add("Two")
    a.SubItems.Add("2")

    a = Me.ListView1.Items.Add("Three")
    a.SubItems.Add("3")
End Sub

Private Sub ListView1_Click(sender As Object, e As EventArgs) Handles ListView1.Click

    If Not txb Is Nothing Then
        RemoveHandler txb.Leave, AddressOf txb_Leave
        ListView1.Controls.Remove(txb)
        txb.Hide()
        txb = Nothing
    End If

    txb = New TextBox()
    txb.Text = Me.ListView1.SelectedItems(0).SubItems(1).Text
    txb.Location = New Point(ListView1.SelectedItems.Item(0).SubItems.Item(1).Bounds.X, ListView1.SelectedItems.Item(0).SubItems.Item(1).Bounds.Y)
    txb.Tag = Me.ListView1.SelectedItems(0)
    AddHandler txb.Leave, AddressOf txb_Leave
    ListView1.Controls.Add(txb)

End Sub

Private Sub txb_Leave(sender As Object, e As EventArgs) Handles TextBox1.Leave
    Dim item As ListViewItem
    item = CType(txb.Tag, ListViewItem)

    item.SubItems(1).Text = txb.Text
End Sub