/// <summary>
/// Initializes a new instance of the UnQLite class.
/// </summary>
/// <remarks>
/// Opening a new database connection.
/// If fileName is ":mem:", then a private, in-memory database is created for the connection.
/// The in-memory database will vanish when the database connection is closed.Future versions
/// of UnQLite might make use of additional special filenames that begin with the ":" character.
/// It is recommended that when a database filename actually does begin with a ":" character
/// you should prefix the filename with a pathname such as "./" to avoid ambiguity.
/// Note: Transactions are not supported for in-memory databases.
/// Note: This routine does not open the target database file.
/// It merely initialize and prepare the database object handle for later usage.
/// </remarks>
/// <param name="fileName">The Operation file.</param>
/// <param name="model">Control the database access mode.</param>
/// <exception cref="System.ArgumentNullException">
/// fileName is null.
/// </exception>
/// <exception cref="UnQLiteException">
/// The UnQLiteException when open file.
/// </exception>
public UnQLite(string fileName, UnQLiteOpenModel model)
{
if (fileName == null)
{
throw new ArgumentNullException("fileName");
}
UnQLiteResultCode code = UnsafeNativeMethods.unqlite_open(out pDb_, fileName, model);
if (code != UnQLiteResultCode.Ok)
{
throw new UnQLiteException(code, GetDataBaseErrorLog());
}
}
/// <summary>
/// Initializes a new instance of the UnQLite class without UnQLiteException.
/// </summary>
/// <exception cref="System.ArgumentNullException">
/// fileName is null.
/// </exception>
public static UnQLiteResultCode TryOpen(string fileName, UnQLiteOpenModel model, out UnQLite unqlite)
{
if (fileName == null)
{
throw new ArgumentNullException("fileName");
}
unqlite = null;
IntPtr pDB;
UnQLiteResultCode code = UnsafeNativeMethods.unqlite_open(out pDB, fileName, model);
if (code == UnQLiteResultCode.Ok)
{
unqlite = new UnQLite(pDB);
}
return(code);
}
public static extern UnQLiteResultCode unqlite_open(out IntPtr ppDB, string zFilename, UnQLiteOpenModel iMode);
