Back to Basic: Fundamental Data Structure in C#

OldMoverBoxSlowWithDevExpress

int[] sourceIndex = new int[this._sourceGridView.SelectedRowsCount];
for (int row = this._sourceGridView.SelectedRowsCount - 1; row >= 0; row--){
    if (_sourceGridView.GetSelectedRows()[row] >= 0){
        sourceIndex[row] = this._sourceGridView.GetDataSourceRowIndex(this._sourceGridView.GetSelectedRows()[row]);
    }
    else{
        sourceIndex[row] = this._sourceGridView.GetSelectedRows()[row];
    }
}