private void buttonDown_Click(object sender, EventArgs e)
{
ColumnsListView colList = CurrentList;
if (colList == null)
{
return;
}
ColParams colParams = ColumnsLists[colList];
if (colParams == null)
{
return;
}
if (colList.SelectedRows.Count == 1)
{
colList.SuspendLayout();
int row = colList.SelectedRows[0].Index;
if (row < colList.Rows.Count - 1)
{
int col = colList.Columns["OrderIndex"].Index;
object a = colList[col, row].Value;
object b = colList[col, row + 1].Value;
colList[col, row].Value = b;
colList[col, row + 1].Value = a;
}
colList.Sort(colList.Columns["OrderIndex"], ListSortDirection.Ascending);
colList.ResumeLayout();
}
UpdateButtons(colList, e);
}
private void UpdateButtons(object sender, EventArgs e)
{
bool up = false;
bool down = false;
ColumnsListView colList = sender as ColumnsListView;
if (colList == null)
{
return;
}
colList.SuspendLayout();
if (colList.SelectedRows.Count == 1)
{
DataGridViewRow item = colList.SelectedRows[0];
if (item.Index > 0)
{
up = true;
}
if (item.Index < colList.Rows.Count - 1)
{
down = true;
}
}
colList.ResumeLayout();
if (buttonUp.Enabled != up)
{
buttonUp.Enabled = up;
}
if (buttonDown.Enabled != down)
{
buttonDown.Enabled = down;
}
}