我创建的变量公共静态List<>
(从MySQL
查询),但List
的Count
总是返回0
!我尝试了一切,但没有成功。这里是我的代码:List.Count总是返回0
public static List<string> GetHashedVars(string ID)
{
List<string> lst = new List<string>();
MySqlConnection conn;
MySqlCommand cmd;
MySqlDataReader reader;
string connString, queryStr = "";
connString = ConfigurationManager.ConnectionStrings["GameserverConnString"].ToString();
using (conn = new MySqlConnection(connString))
{
//The query for execution
queryStr = "SELECT * FROM account.account WHERE id_hashed=?hid LIMIT 1";
//Open the connection to the database
conn.Open();
//execute command
cmd = new MySqlCommand(queryStr, conn);
cmd.Parameters.AddWithValue("?hid", ID);
using (reader = cmd.ExecuteReader())
{
//Loop through results
while (reader.Read())
{
lst.Add(reader.GetString(reader.GetOrdinal("id_hashed")));
lst.Add(reader.GetString(reader.GetOrdinal("login_hashed")));
lst.Add(reader.GetString(reader.GetOrdinal("webcode_hashed")));
lst.Add(Encryption.CipherEncryption(reader.GetString(reader.GetOrdinal("status")).Trim()));
}
}
reader.Close();
conn.Close();
}
queryStr = "";
reader = null;
cmd = null;
conn = null;
connString = "";
return lst;
}
你有没有先调试过它?你是否连接到数据库? –
你有调试吗?在你阅读并添加到列表中的行可以看到它是否实际添加了任何内容? – JonE
查询是否返回任何行 – Saurav