我想用c#登錄程序,用我的用戶名和密碼存儲到phpmyadmin中的SQL數據庫中。 這是我到目前爲止。在C#中選擇MySQL數據
private void button1_Click(object sender, EventArgs e)
{
MySqlConnection connection;
string server = "localhost";
string database = "login";
string uid = "root";
string password = "";
string connectionString;
connectionString = "SERVER=" + server + ";" + "DATABASE=" +
database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";
connection = new MySqlConnection(connectionString);
try
{
connection.Open();
if (connection.State == ConnectionState.Open)
{
connection.Close();
Form1 frm = new Form1(this);
frm.Show();
Hide();
}
else
{
MessageBox.Show("Database Connection Failed", "Epic Fail", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk);
}
}
catch (Exception ex)
{
MessageBox.Show("An Error Occured, Try again later.", "Epic Fail", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk);
}
}
它連接到數據庫,但我不希望它顯示form1直到輸入了有效的用戶名和密碼。 我猜我需要使用SELECT * FROM,但我不確定如何去做。
的連接將失敗。 – user3185569