Update!
To clarify the question. I would like to change the selected item in my listview by using the up and down arrow. I have tied keydown to a textbox. If a user presses the period key i make my listview visible. But it's not focused, that is why I have tied the keydown events to the textbox to be able to change the selecteditem in the listview.
the code that visuaö studio is complaining about is this
index = listView1.SelectedIndices[0];
the zero is somehow wrong?
I'm using a listview !
How do I change the listview selecteditem
programatically? I'm currently listening to to the keypress events of up arrow and down arrow.
As they are pressed I would like to change the selected items index. So that it would behave equally as when pressing up or down arrow having it focused!
I have been trying, but it gives me an ugly error message.
Argument out of range exception with the additional information that goes like this:
Value of 0 is not valid for index. Here's my code for down arrow.
IT really should work I'm totally clueless about this!
if (e.KeyCode == Keys.Down)
{
if (listView1.Visible)
{
index = listView1.SelectedIndices[0];
index = index - 1;
this.listView1.Items[index].Selected = true;
}
}
and for up arrow
if (e.KeyCode == Keys.Up)
{
if (this.listView1.Visible)
{
index = listView1.SelectedIndices[0];
index++;
this.listView1.Items[index].Selected = true;
}
}
Try this instead:
if (e.KeyCode == Keys.Down)
{
if (listView1.Visible && listView1.Items.Count > 0)
{
index = listView1.SelectedIndices[0];
index = index - 1;
this.listView1.Items[index].Selected = true;
}
}
I think you are getting an IndexOutOfBound
because you don't have any items in the list.
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