ListView 上移下移、上调下调

行上移下移

#region 上移位置
/// <summary>
/// 选中行上移方法
/// </summary>
/// <param name="listView"></param>
private void ListViewUpMove(ListView listView)
{
if (listView.SelectedItems.Count == 0)
{
return;
}

listView.BeginUpdate();
if (listView.SelectedItems[0].Index > 0)
{
foreach (ListViewItem lvi in listView.SelectedItems)
{
ListViewItem lviSelectedItem = lvi;
int indexSelectedItem = lvi.Index;
listView.Items.RemoveAt(indexSelectedItem);
listView.Items.Insert(indexSelectedItem - 1, lviSelectedItem);
}
}
listView.EndUpdate();

if (listView.Items.Count > 0 && listView.SelectedItems.Count > 0)
{
listView.Focus();
listView.SelectedItems[0].Focused = true;
listView.SelectedItems[0].EnsureVisible();
}
}
#endregion

#region 下移位置
/// <summary>
/// 下移方法
/// </summary>
/// <param name="listView"></param>
private void ListViewDownMove(ListView listView)
{
if (listView.SelectedItems.Count == 0)
{
return;
}

listView.BeginUpdate();
int indexMaxSelectedItem = listView.SelectedItems[listView.SelectedItems.Count - 1].Index;

if (indexMaxSelectedItem < listView.Items.Count - 1)
{
for (int i = listView.SelectedItems.Count - 1; i >= 0; i--)
{
ListViewItem lviSelectedItem = listView.SelectedItems[i];
int indexSelectedItem = lviSelectedItem.Index;
listView.Items.RemoveAt(indexSelectedItem);
listView.Items.Insert(indexSelectedItem + 1, lviSelectedItem);
}
}
listView.EndUpdate();

if (listView.Items.Count > 0 && listView.SelectedItems.Count > 0)
{
listView.Focus();
listView.SelectedItems[listView.SelectedItems.Count - 1].Focused = true;
listView.SelectedItems[listView.SelectedItems.Count - 1].EnsureVisible();
}
}
#endregion

选中行上调下调

#region 上调位置
/// <summary>
/// 上调方法
/// </summary>
/// <param name="listView"></param>
private void ListViewUpMove(ListView listView)
{
if (listView.SelectedItems.Count == 0)
{
return;
}

if (listView.SelectedItems[0].Index > 0)
{
foreach (ListViewItem lvi in listView.SelectedItems)
{
ListViewItem lviSelectedItem = lvi;
int indexSelectedItem = lvi.Index;
//listView.Items.RemoveAt(indexSelectedItem);
//listView.Items.Insert(indexSelectedItem - 1, lviSelectedItem);
listView.Items[indexSelectedItem].Selected = false;
listView.Items[indexSelectedItem - 1].Selected = true;

listView.Items[indexSelectedItem - 1].EnsureVisible();//滚动条自动上滚
}
}
}
#endregion
#region 下调位置
/// <summary>
/// 下调方法
/// </summary>
/// <param name="listView"></param>
private void ListViewDownMove(ListView listView)
{
if (listView.SelectedItems.Count == 0)
{
return;
}

if (listView.SelectedItems[0].Index < listView.Items.Count - 1)
{
foreach (ListViewItem lvi in listView.SelectedItems)
{
ListViewItem lviSelectedItem = lvi;
int indexSelectedItem = lvi.Index;
listView.Items[indexSelectedItem].Selected = false;
listView.Items[indexSelectedItem + 1].Selected = true;

listView.Items[indexSelectedItem + 1].EnsureVisible();//滚动条自动下滚
}
}
}
#endregion