you will get the ListView's selectedIndex, add 1 to it and set that item as selected. Refer the following code.
private void btnNext_Click(object sender, EventArgs e)
{
// Get the currently selected items index
int index = listView1.SelectedIndices[0] + 1;
// If you are in the last record, don't do anything.
if (index >= listView1.Items.Count)
return;
// Set the Selected property to true for the item at the index.
listView1.Items[index].Selected = true;
}
Hope this helps