How to use executeReader() method to retrieve the value of just one cell

Question

I need to execute the following command and pass the result to a label. I don\'t know how can i do it using Reader. Someone can give me a hand?

String sql =          


        

Answer 1

using (var conn = new SqlConnection(SomeConnectionString))
using (var cmd = conn.CreateCommand())
{
    conn.Open();
    cmd.CommandText = "SELECT * FROM learer WHERE id = @id";
    cmd.Parameters.AddWithValue("@id", index);
    using (var reader = cmd.ExecuteReader())
    {
        if (reader.Read())
        {
            learerLabel.Text = reader.GetString(reader.GetOrdinal("somecolumn"))
        }
    }
}