判断两个DataGridView单元格内容

Question

            for (int n = 1; n < dataGridView1.Columns.Count; n++)
            {
                if (dataGridView.Rows[0].Cells[6].Value == dataGridView1.Rows[0].Cells[n].Value)
                {
                    MessageBox.Show(Convert.ToString(n));
                }
            }这段代码该如何修改？

Answer 1

 for (int n = 0; n < dataGridView1.Columns.Count-1; n++)
            {
                if (dataGridView.Rows[0].Cells[6].Value == dataGridView1.Rows[0].Cells[n].Value)
                {
                    MessageBox.Show(Convert.ToString(n));
                }
            }

Answer 2

在n=3时 两值相等
但是还是不执行MessageBox.Show(Convert.ToString(n));

Answer 3

if (dataGridView.Rows[0].Cells[6].Value.ToString() == dataGridView1.Rows[0].Cells[n].Value.ToString())
                {
                    MessageBox.Show(Convert.ToString(n));
                }

Answer 4

for (int n = 0; n < dataGridView1.Columns.Count-1; n++)
            {
                if (dataGridView.Rows[0].Cells[6].Value.ToString() == dataGridView1.Rows[0].Cells[n].Value.ToString())                {
                    MessageBox.Show(Convert.ToString(n));
                }
            }