dataGridView 移行

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        //下移一行
        private void button2_Click( object sender, EventArgs e )
        {

            DataGridViewRow dr = dataGridView1.CurrentRow;
            if ( dr.Index < dataGridView1.Rows.Count - 1 )
            {
                int index = dr.Index;
                dataGridView1.Rows.Remove( dr );
                dataGridView1.Rows.Insert( index + 1, dr );

                dr.Selected = true;
                dataGridView1.CurrentCell = dr.Cells[0];
            }
        }

        //上移一行
        private void button3_Click( object sender, EventArgs e )
        {

DataGridViewRow dr = dataGridView1.CurrentRow;

            if ( dr.Index > 0 )
            {
                int index = dr.Index;
                dataGridView1.Rows.Remove( dr );
                dataGridView1.Rows.Insert( index - 1, dr );

                dr.Selected = true;
                dataGridView1.CurrentCell = dr.Cells[0];
            }
        }

        //首行
        private void button4_Click( object sender, EventArgs e )
        {
            if ( dataGridView1.CurrentRow.Index != 0 )
            {
                DataGridViewRow dr = dataGridView1.CurrentRow;
                dataGridView1.Rows.Remove( dr );
                dataGridView1.Rows.Insert(0, dr );

                dr.Selected = true;
                dataGridView1.CurrentCell = dr.Cells[0];
            }
        }

        //末行
        private void button5_Click( object sender, EventArgs e )
        {
            if ( dataGridView1.CurrentRow.Index <dataGridView1.Rows.Count-1 )
            {
                DataGridViewRow dr = dataGridView1.CurrentRow;
                dataGridView1.Rows.Remove( dr );
                dataGridView1.Rows.Insert( dataGridView1.Rows.Count , dr );

                dr.Selected = true;
                dataGridView1.CurrentCell = dr.Cells[0];
            }
        }