I am trying to take a single value from a database, but the cycle does not seem to start at all?
if (connection.State == ConnectionState.Open)
{
MySqlDataReader dataReader = cmd.ExecuteReader();
while (dataReader.Read())
{
value = dataReader["amount"].ToString();
}
dataReader.Close();
connection.Close();
}
These are the commands:
public string value;
public static string Konekcija = "Server=127.0.0.1; Database=CardIgrica; Uid=admin; Pwd=admin;";
public string komanda = "SELECT amount FROM CardIgrica.creaures WHERE id = '1';";
MySqlConnection connection = new MySqlConnection(Konekcija);
MySqlCommand cmd = new MySqlCommand(komanda, connection);
connection.Open();
try this for the select
public string value {get; set;}
string komanda ="SELECT amount FROM CardIgrica.creaures WHERE id = 1";
First open your sql connection then make object of MySqlCommand like below:
MySqlConnection connection = new MySqlConnection(Konekcija);
connection.Open();
MySqlCommand cmd = new MySqlCommand(komanda, connection);
Try this
using (SqlConnection conn = new SqlConnection(Konekcija))
{
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.Parameters.Clear();
cmd.CommandText = komanda ;
conn.Open();
var dataReader= cmd.ExecuteReader();
while (result.Read())
{
value = dataReader["amount"].ToString();
}
conn.Close();
}
If you need single value, you can use cmd.ExecuteScalar();
instead of cmd.ExecuteReader();
because ExecuteScalar()
will return single value.
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