Pretvorba treeview to datatable

int onceMore = 0;
            for (int i = 0; i < Nodes.Nodes.Count; i++)
            {
                var activeNode = Nodes.Nodes[i];
                var numberOfColumns = activeNode.Nodes.Count * 2 + 1;
                //var row = new Object[activeNode.Nodes.Count];
                dataGridView1.ColumnCount = numberOfColumns;
                dataGridView1.RowCount = activeNode.Nodes.Count;
            OnceAgain:
                onceMore++;
                for (int j = 0; j < activeNode.Nodes.Count; j++)
                {
                    if (onceMore == 1)
                    {
                        dataGridView1.Columns[j].Name = activeNode.Nodes[j].Text;
                        dataGridView1.Rows[j].HeaderCell.Value = activeNode.Nodes[j].Text;
                    }
                    else
                    {
                        var index = j + (activeNode.Nodes.Count - j) + j;
                        dataGridView1.Columns[index].Name = activeNode.Nodes[j].Text + " Koristnost";
                    }
                    if (onceMore < 2 && j == activeNode.Nodes.Count - 1)
                    {
                        goto OnceAgain;
                    }

                    if (j == activeNode.Nodes.Count - 1)
                    {
                        dataGridView1.Columns[numberOfColumns - 1].Name = "Weights";
                    }
                }

                for(int row=0; row < dataGridView1.RowCount; row++)
                {
                    for(int column = 0; column < dataGridView1.ColumnCount; column++)
                    {
                        if(row == column)
                        {
                            dataGridView1[row, column].Value = 1;
                            dataGridView1[row, column].ReadOnly = true;
                        }
                    }
                }
            }