祝大家有美好的一天。我有这个填充 Datagridview 的代码。我试图编辑它。但似乎我无法保存对数据库的任何更改。虽然我没有收到任何错误。任何帮助将非常感激。非常感谢!
private void FrmViewCustomer_Load(object sender, EventArgs e)
{
string query = "SELECT CONCAT(firstname,', ',lastname) AS NAME, orderedgood AS OrderedGood FROM customer c;";
using (MySqlConnection conn = new MySqlConnection(ConfigurationManager.ConnectionStrings["default"].ConnectionString))
{
conn.Open();
using (MySqlCommand command = new MySqlCommand(query, conn))
{
using (adapter = new MySqlDataAdapter(command))
{
dataGridView1.Rows.Clear();
dataGridView1.AllowUserToAddRows = false;
DataTable dt = new DataTable();
adapter.Fill(dt);
dataGridView1.DataSource = dt;
}
}
}
}
private void button1_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
this.adapter.Update(dt);
}