/// <summary>
/// executes command using Parameters
/// </summary>
/// <param name="command"></param>
/// <param name="parms"></param>
/// <returns>rows affected or -1 for error</returns>
public override int execute(string command, Parameters parms)
{
if (this.connection.State != ConnectionState.Open)
{
this.connection.Open();
}
int status;
SQLiteCommand sqliteCommand = new SQLiteCommand(command, this.connection);
sqliteCommand.Parameters.AddRange(parms.getParameters());
try
{
status = sqliteCommand.ExecuteNonQuery();
}
catch
{
return -1;
}
return status;
}
/// <summary>
/// Runs query command given using parameters
/// </summary>
/// <param name="command"></param>
/// <param name="parms"></param>
/// <returns>results of query</returns>
public override DbDataReader query(string command, Parameters parms)
{
if (this.connection.State == ConnectionState.Closed)
{
this.connection.Open();
}
SQLiteCommand sqliteCommand = new SQLiteCommand(command, this.connection);
sqliteCommand.Parameters.AddRange(parms.getParameters());
SQLiteDataReader results = sqliteCommand.ExecuteReader();
this.lastQuery = results;
return results;
}
/// <summary> /// executes command using Parameters /// </summary> /// <param name="command"></param> /// <param name="parms"></param> /// <returns>rows affected or -1 for error</returns> public abstract int execute(string command, Parameters parms);
/// <summary>
/// fills a data table using query given
/// </summary>
/// <param name="command"></param>
/// <param name="parms"></param>
/// <returns>datatable</returns>
public DataTable fill(string command, Parameters parms)
{
if (this.connection.State == ConnectionState.Closed)
{
this.connection.Open();
}
SQLiteCommand sqliteCommand = new SQLiteCommand(command, this.connection);
sqliteCommand.Parameters.AddRange(parms.getParameters());
SQLiteDataAdapter sqliteAd = new SQLiteDataAdapter(sqliteCommand);
DataTable dt = new DataTable();
sqliteAd.Fill(dt);
this.lastQuery = sqliteCommand.ExecuteReader();
return dt;
}
/// <summary> /// Runs query command given using parameters /// </summary> /// <param name="command"></param> /// <param name="parms"></param> /// <returns>results of query</returns> public abstract DbDataReader query(string command, Parameters parms);