在datagridview中要选中一行数据修改或删除或添加的代码怎么写！

Question

datagridview.Remove(object);
datagridview.RemoveAt(索引);datagridview.Add();

Answer 1

 private void toolStripButton3_Click(object sender, EventArgs e)
        {
            try
            {
                if (dataGridView1.Focus())
                {
                    if (MessageBox.Show("确定删除吗？", "提示", MessageBoxButtons.OKCancel) == DialogResult.OK)
                    {
                        int i = dataGridView1.CurrentCell.RowIndex;
                        string uname = dataGridView1.Rows[i].Cells[0].Value.ToString();
                        string upnumber = dataGridView1.Rows[i].Cells[1].Value.ToString();
                        SqlConnection con = new SqlConnection(conString);
                        con.Open();
                        string sql = "delete from suser where uname= '" + uname + "' and upnumber='" + upnumber + "'";
                        SqlCommand cmd = new SqlCommand(sql, con);
                        cmd.ExecuteNonQuery();
                        string sql1 = "select uname,upnumber from suser";
                        DataSet ds = new DataSet();
                        SqlDataAdapter mydadapter = new SqlDataAdapter(sql1, con);
                        mydadapter.Fill(ds, "list");                        this.dataGridView1.DataSource = ds.Tables["list"];                        con.Close();
                    }
                }
                else
                {
                    MessageBox.Show("请选择数据");
                }
            }
            catch { MessageBox.Show("请选择数据"); }
        }