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Thread: listview control with a checkbox in VS 2015

  1. #1

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    listview control with a checkbox in VS 2015

    I have a listview control on a form. The first column has been set to be a checkbox for the purpose of a user checking the item to be "flagged". I want to update a database when a user checks a record in the listview by checking the checkbox. I am trying to get the row number or index of the checkbox where that checkbox is that was checked but can't. In other words, I want to get the index of the row that that checkbox is on when it has been checked. Once I have that then I get a subitem text from that row to pass the database command. I can get the index when I select in the area right next to the checkbox in that same column on that row but cab't get it when just the checkbox has been checked. I don't want to loop thru all the items in the listview and check each one.

    Any help will be appreciated. TIA

    Bill

  2. #2
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    Re: listview control with a checkbox in VS 2015

    There are two events you can use ItemChecked and ItemCheck



  3. #3

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    Re: listview control with a checkbox in VS 2015

    Thanks. Can you be a little more specific and provide some sample code, I'd very much appreciate it?

  4. #4
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    Re: listview control with a checkbox in VS 2015

    Clicking the links should help... there's usually sample code on MSDN.

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  5. #5

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    Re: listview control with a checkbox in VS 2015

    tg
    Thank you. I did check the links but still am having a hard time with this. Tried applying some of the code in the links without success. MS's documentation is sometimes very confusing to me. If you don't want to post some sample code then I understand. Tried all of these without success and tried using the properties you referenced also with no success

    With lvwFromRepData
    Dim itemNoChecked As Integer = 0
    Dim ItemSelected As String = ""
    itemNoChecked = .Items(.SelectedIndices(0)).Index
    itemNoChecked = .FocusedItem.Index
    itemNoChecked = .SelectedIndices(0)
    itemNoChecked = .SelectedItems(0).Index
    'get vluae of a specific column in the listview once the row has been determined
    ItemSelected = .Items(itemNoChecked).SubItems(2).Text
    ItemSelected = .SelectedItems(1).SubItems(2).Text


    End With

  6. #6
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    Re: listview control with a checkbox in VS 2015

    e argument contains the item that fired the event, you can use it to gather data you want, e.g.

    Code:
        Private Sub ListView1_ItemChecked(sender As Object, e As ItemCheckedEventArgs) Handles ListView1.ItemChecked
            If e.Item.Checked Then
                MessageBox.Show(Me, "Item Checked Index is " & e.Item.Index & Environment.NewLine & "Item Checked SubItems(2) is " & e.Item.SubItems(2).Text, My.Application.Info.Title, MessageBoxButtons.OK, MessageBoxIcon.Information)
            Else
                MessageBox.Show(Me, "Item Un-Checked Index is " & e.Item.Index & Environment.NewLine & "Item Un-Checked SubItems(2) is " & e.Item.SubItems(2).Text, My.Application.Info.Title, MessageBoxButtons.OK, MessageBoxIcon.Information)
            End If
        End Sub



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