System.Data.SQLite

    /// <summary>
    /// Create a new parameter
    /// </summary>
    /// <returns></returns>
    public new SQLiteParameter CreateParameter()
    {
      CheckDisposed();
      return new SQLiteParameter(this);
    }

    /// <summary>
    /// The connection associated with this command
    /// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
    [DefaultValue((string)null), Editor("Microsoft.VSDesigner.Data.Design.DbConnectionEditor, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]

                {
                    command.CommandText = commandText;

                    if (args != null)
                    {
                        foreach (object arg in args)
                        {
                            SQLiteParameter parameter = arg as SQLiteParameter;

                            if (parameter == null)
                            {
                                parameter = command.CreateParameter();
                                parameter.DbType = DbType.Object;
                                parameter.Value = arg;
                            }

                            command.Parameters.Add(parameter);
                        }
                    }

                    switch (executeType)
                    {
                        case SQLiteExecuteType.None:
                            {

  public sealed class SQLiteParameter : DbParameter, ICloneable
  {
    /// <summary>
    /// This value represents an "unknown" <see cref="DbType" />.
    /// </summary>
    private const DbType UnknownDbType = (DbType)(-1);

    /// <summary>
    /// The command associated with this parameter.
    /// </summary>
    private IDbCommand     _command;
    /// <summary>
    /// The data type of the parameter
    /// </summary>
    internal DbType        _dbType;
    /// <summary>
    /// The version information for mapping the parameter
    /// </summary>

    /// <summary>
    /// The data size, unused by SQLite
    /// </summary>
    private int            _dataSize;

    private bool           _nullable;
    private bool           _nullMapping;

    /// <summary>
    /// Constructor used when creating for use with a specific command.
    /// </summary>
    /// <param name="command">
    /// The command associated with this parameter.
    /// </param>
    internal SQLiteParameter(
        IDbCommand command
        )
        : this()
    {
        _command = command;
    }

    /// <summary>
    /// Default constructor
    /// </summary>
    public SQLiteParameter() 
      : this(null, UnknownDbType, 0, null, DataRowVersion.Current)
    {

      _sourceColumn = sourceColumn;
      _rowVersion = rowVersion;
      _dataSize = parameterSize;
      _nullable = true;
    }

    private SQLiteParameter(SQLiteParameter source)
      : this(source.ParameterName, source._dbType, 0, source.Direction, source.IsNullable, 0, 0, source.SourceColumn, source.SourceVersion, source.Value)
    {
      _nullMapping = source._nullMapping;
    }

    /// <summary>
    /// Constructs a named parameter of the specified type, size, source column and row version
    /// </summary>

    /// <param name="parameterSize">The size of the parameter</param>
    /// <param name="sourceColumn">The source column</param>
    /// <param name="rowVersion">The row version information</param>
    public SQLiteParameter(DbType parameterType, int parameterSize, string sourceColumn, DataRowVersion rowVersion)
      : this(null, parameterType, parameterSize, sourceColumn, rowVersion)
    {
    }

    /// <summary>
    /// The command associated with this parameter.
    /// </summary>
    public IDbCommand Command
    {
      get
      {
        return _command;
      }
      set 
      {
        _command = value;
      }
    }

    /// <summary>
    /// Whether or not the parameter can contain a null value
    /// </summary>
    public override bool IsNullable
    {
      get

        {
          if (_objValue != null && _objValue != DBNull.Value)
          {
            return SQLiteConvert.TypeToDbType(_objValue.GetType());
          }
          return DbType.String; // Unassigned default value is String
        }
        return _dbType;
      }
      set
      {
        _dbType = value;
      }
    }