CODEWITHSUNDEEP
c#.netwinforms
panjo
panjo

Reputation: 3515

select row from winforms listview

I have listview which is populated with list of data. Now I want to select desired row and on click button to recognize that item to delete from a collection.

Question is how to recognize selected row from the listview?

private void buttonDelete_Click(object sender, EventArgs e)
{
    //selected data is of custom type MyData
    var selected = (MyData)....?
}

Thanks

Upvotes: 3

Views: 1829

Answers (5)

King King
King King

Reputation: 63387

I don't think you have to use casting for a deleting operation, just remove all the selected indices like this:

private void buttonDelete_Click(object sender, EventArgs e){
    for (int i = listView1.SelectedIndices.Count - 1; i >= 0; i--)                
         listView1.Items.RemoveAt(listView1.SelectedIndices[i]);
}

or more simply:

private void buttonDelete_Click(object sender, EventArgs e){
    foreach(ListViewItem item in listView1.SelectedItems)                
         listView1.Items.Remove(item);
}

As you can see the item which is selected is of type ListViewItem, you can bind your data to this item via Text property (if the data is string) or Tag property. I don't understand what your CustomData is, is it a type inheriting ListViewItem?

Upvotes: 1

Vladimir Gondarev
Vladimir Gondarev

Reputation: 1243

Old School answer :) without any LINQ statements

if(yourListView.SelectedItems.Count > 0)
{
  var item = yourListView.SelectedItems[0];
}

Upvotes: 1

Ehsan
Ehsan

Reputation: 32729

YOu should do this

  private void buttonDelete_Click(object sender, EventArgs e)
  {        

    if (yourListView.SelectedItems.Any())
   {
     //selected data is of custom type MyData
     var selected = (MyData)yourListView.SelectedItems[0];
    YourCollection.Remove(selected);
   }
  }

Upvotes: 0

David Osborne
David Osborne

Reputation: 6821

To add to @Zaphod's answer and make a little more robust:

private void buttonDelete_Click(object sender, EventArgs e)
{
    if (yourListView.SelectedItems.Any())
    {
         //selected data is of custom type MyData
         var selected = yourListView.SelectedItems.First();
    }
}

You could use .Count > 0 instead of .Any() and .SelectedItems[0] instead of .First(). Whatever you find more readable/maintainable.

Upvotes: 3

provençal le breton
provençal le breton

Reputation: 1438

This should works

  private void buttonDelete_Click(object sender, EventArgs e)
    {
        //selected data is of custom type MyData
        var selected = yourListView.SelectedItems.First();
    }

Upvotes: 4

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