SQLite Wählen Sie, wo ID entspricht

Question

Ich versuche, eine Parent-Child-Hierarchie in einer SQLite-Datenbank zu machen.
Allerdings bin ich eine Ausnahme in der Zeile vor dem letzten

An unhandled exception of type 'System.Data.SQLite.SQLiteException' occurred in System.Data.SQLite.dll 
Additional information: SQL logic error or missing database 

Diese bekommen ist mein Code:

SQLiteDataReader reader; 
string main_subject = ""; 

lastParagraphHeading2 = false; 
sql = "SELECT last_insert_rowid() FROM Hilchot"; 
command = new SQLiteCommand(sql, m_dbConnection); 
long lastID = (long)command.ExecuteScalar(); 

sql = "select * from Hilchot where ID=" + lastID; 
command = new SQLiteCommand(sql, m_dbConnection); 
reader = command.ExecuteReader(); 
main_subject = reader["Title"].ToString(); 

Answer 1

using (var connection = new SQLiteConnection()) 
{ 
    connection.ConnectionString = connectionString;//your connection string here 

    using (var command = new SQLiteCommand()) 
    { 
     connection.Open(); 
     command.CommandType = CommandType.Text; 
     command.CommandText = sql; 
     command.Connection = connection; 

     using (SQLiteDataReader reader = command.ExecuteReader()) 
     { 
      if (reader.HasRows) 
      { 
       // Do something 
      } 
     } 
    } 
}