How Do I Add Items and SubItems to a Selected ListView Row?

[Gary108]

Hello,

In my application I have a form with a ListView control. I have three columns and I add text to each of those columns from three text boxes using a single Click Event.

This works fine as long as I want to append the new items and subitems to the last line of my listView control. However, what I need sometimes is to edit the items and subitems at a specific row in the list.

For example, I would like to select a certain row, add the items and subitems from the text boxes and have it add those items to that line, not the last line.

My guess is that it could be done by identifying the index of a particular row and sending the items and subitems to that row based on the index. I expect that if there is already some item or subitem at that location, adding a new one will overwrite the existing one.

I know how to select a row and determine the index but I cannot figure out how to add the items to a row of that particular index.

Can anyone help me?


This is my code:

Public Class Form1
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddItems.Click
 
        Dim strItem As String
        strItem = TextBox.Text
 
        Dim strItem1 As String
        strItem1 = TextBox1.Text
 
        Dim strItem2 As String
        strItem2 = TextBox2.Text
 
 
     Dim item1 As New ListViewItem(strItem)
     ListView1.Items.AddRange(New ListViewItem() {item1})
     item1.SubItems.Add(strItem1)
     item1.SubItems.Add(strItem2)
 
 
        TextBox.Clear()
        TextBox1.Clear()
        TextBox2.Clear()
 
    End Sub
 
 
 
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ListView1.GridLines = True
        ListView1.View = View.Details
 
 
        ListView1.Columns.Add("Item Column", 150)
        ListView1.Columns.Add("Column 2", 100)
        ListView1.Columns.Add("Column 3", 100)
        ListView1.Font = New Font("times", 14)
        ListView1.FullRowSelect = True
 
    End Sub
    Private Sub ListView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged
        'Inserts selected ListView Item to the designated text box when the listview item is selected
        If ListView1.SelectedItems.Count > 0 Then
 
            Dim selectedItem As String
            selectedItem = ListView1.SelectedItems(0).Text
            TextBox.Text = selectedItem
        End If
 
        Dim subitem1 As String
        subitem1 = ListView1.SelectedItems(0).SubItems(1).Text()
        TextBox1.Text = subitem1
 
        Dim subitem2 As String
        subitem2 = ListView1.SelectedItems(0).SubItems(2).Text()
        TextBox2.Text = subitem2
 
        End Sub
 
 
 
 
 
    Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 
        Dim index As Integer = ListView1.SelectedIndices(0)
        txtIndex.text = index
 
    End Sub
End Class
 

[PsychoCoder]

This is VB.NET so I'll go a head and move this to the VB.NET forum for you so it can be seen by the proper experts :)

[CyberSoftHari]

Dim tmpListItem As ListItem ' Declaration should be out of add list function
Set tmpListItem  = UIlstItem.ListItems.Add(intIndex,strKey ,strDisplayText)
tmpListItem.SubItems(fieldIndex) = strDisplayString2 
 

Above code format is an vb6 code and you can try this for VB.Net

[Gary108]

@CyberSoftHari
Hello. Thank you for replying. I do not fully follow your code. Please explain the meaning of intIndex, strKey, and strDisplayText.

Also, could you explain "fieldIndex and strDisplayString2? Thank you.

[CyberSoftHari]

UiListitems-> user interface listitems
strDisplayText-> text to display in list items.
intInex->row index(number)
intFieldIndex->column index(number)
strKEY->key value for row