C#查询数据库表数据并赋值textTBook

dt = (DataTable)SqlHelper.ExcuteQuery("select * from youtable", ExcuteType.ExcuteDataDataTable);dataGridView1.DataSource = dt;textBox1.Text = dataGridView1.Rows[0].Cells[0].Value.ToString();textBox2.Text = dataGridView1.Rows[0].Cells[1].Value.ToString();textBox3.Text = d...