c# - 添加新项目时 DataGridView 的问题

Question

当我在 datagridview 上保存新项目时，该语句

MessageBox.Show(this.tb_aprovacao_admissaoDataGridView.CurrentRow.Cells[0].Value.ToString());

显示值 -1。我怎样才能改变它以显示真实的身份证号码？

谢谢大家。

Answer 1

Depends how you want to get the value.. Do you want to get the value after you click on the cell, or on the click of a button or?

If you want to do it on the cell click event, you can do it like this:

private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value != null)
            {
                 MessageBox.Show(dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString());
            }
        }

To get it with a button:

private void button1_Click(object sender, EventArgs e)
    {
        MessageBox.Show(dataGridView1.CurrentCell.Value.ToString());
    }