private void OnLayerGrid_DragDrop(object sender, DragEventArgs e)
{
int layerHandle = 0;
// The mouse locations are relative to the screen, so they must be
// converted to client coordinates.
System.Drawing.Point clientPoint = layerGrid.PointToClient(new System.Drawing.Point(e.X, e.Y));
// Get the row index of the item the mouse is below.
_rowIndexOfItemUnderMouseToDrop = layerGrid.HitTest(clientPoint.X, clientPoint.Y).RowIndex;
if (_rowIndexOfItemUnderMouseToDrop < 0)
{
e.Effect = DragDropEffects.None;
}
else
{
// If the drag operation was a move then remove and insert the row.
if (e.Effect == DragDropEffects.Move)
{
DataGridViewRow rowToMove = e.Data.GetData(typeof(DataGridViewRow)) as DataGridViewRow;
layerGrid.Rows.RemoveAt(_rowIndexFromMouseDown);
layerGrid.Rows.Insert(_rowIndexOfItemUnderMouseToDrop, rowToMove);
for (int row = 0; row < layerGrid.RowCount; row++)
{
if (row > 0)
{
layerHandle = (int)layerGrid[0, row].Tag;
var pos = _mapLayersHandler.get_LayerPosition(layerHandle);
_mapLayersHandler.MoveLayerBottom(pos);
}
}
_mapLayersHandler.RefreshMap();
}
}
}