try
{
Connections.con.Open();
string str = "INSERT INTO `Employee` (`FirstName`, `LastName`, `DOB`, `ContactNumber`, `Username`, `Password`) VALUES (?, ?, ?, ?, ?, ?)";
OleDbCommand cmd = new OleDbCommand(str, Connections.con);
cmd.Parameters.AddWithValue("@?", txtFirst.Text.ToString());
cmd.Parameters.AddWithValue("@?", txtLast.Text.ToString());
cmd.Parameters.AddWithValue("@?", txtDOB.Text.ToString());
cmd.Parameters.AddWithValue("@?", txtCon.Text.ToString());
cmd.Parameters.AddWithValue("@?", txtUser.Text.ToString());
cmd.Parameters.AddWithValue("@?", txtPass.Text.ToString());
cmd.ExecuteNonQuery();
MessageBox.Show("Registration Successful");
}
catch (Exception ex)
{
MessageBox.Show("Username Exists.");
}
finally
{
Connections.con.Close();
this.Dispose();
this.Close();
f1.Show();
}
我不能找到一種方法,該表單會提示一個消息,說請填寫空字段.. 每當用戶忘記填寫文本框必填字段驗證