C# Sqlite.SqliteParameter类代码示例

        /// <summary>
        /// Clears all items from the database where their PublishDate is before the date provided.
        /// </summary>
        /// <param name="date"></param>
        public void ClearItemsBeforeDate(DateTime date)
        {
            try
            {
                using (SqliteConnection connection = new SqliteConnection(ItemsConnectionString))
                {
                    connection.Open();
                    using (SqliteCommand command = new SqliteCommand(connection))
                    {
                        string sql = @"DELETE FROM items WHERE DATETIME(publishdate) <= DATETIME(@date)";
                        command.CommandText = sql;

                        SqliteParameter parameter = new SqliteParameter("@date", DbType.String);
                        parameter.Value = date.ToString("yyyy-MM-dd HH:mm:ss");
                        command.Parameters.Add(parameter);

                        int rows = command.ExecuteNonQuery();
                        Logger.Info("ClearItemsBeforeDate before {0} cleared {1} rows.", date.ToString("yyyy-MM-dd HH:mm:ss"), rows);
                    }
                }
            }
            catch (SqliteException e)
            {
                Logger.Warn("SqliteException occured while clearing items before {0}: \n{1}", date, e);
            }
        }

        public DataStructure FindByName(string username)
        {
            lock (singelton)
            {
                try
                {
                    string sql = "select * from users where username=:USERNAME limit 1";
                    this.command = (IDbCommand)this.connection.CreateCommand ();
                    this.command.CommandText = sql;

                    SqliteParameter param = new SqliteParameter ();
                    param.ParameterName = ":USERNAME";
                    param.Value = username;
                    param.DbType = DbType.String;

                    this.command.Parameters.Add (param);
                    IDataReader dr = (IDataReader)this.command.ExecuteReader ();

                    if (dr.Read ())
                    {
                        return new DataStructure () { id = int.Parse((string)dr["id"].ToString()), username = dr["username"].ToString(), password = (string)dr["password"].ToString(), admin = bool.Parse(dr["admin"].ToString()) };
                    }
                    return null;
                }
                catch(SqliteException e)
                {
                    return null;
                }
            }
        }

        public static bool AccountClearLockout(Guid userGuid)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("UPDATE mp_Users ");
            sqlCommand.Append("SET IsLockedOut = 0,  ");
            sqlCommand.Append("FailedPasswordAttemptCount = 0, ");
            sqlCommand.Append("FailedPwdAnswerAttemptCount = 0 ");

            sqlCommand.Append("WHERE UserGuid = :UserGuid  ;");

            SqliteParameter[] arParams = new SqliteParameter[1];

            arParams[0] = new SqliteParameter(":UserGuid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = userGuid.ToString();

            int rowsAffected = 0;

            rowsAffected = SqliteHelper.ExecuteNonQuery(
                GetConnectionString(),
                sqlCommand.ToString(),
                arParams);

            return (rowsAffected > 0);
        }

        public bool SetAdmin(int userId)
        {
            lock (singelton)
            {
                try
                {
                    string sql = "update users set admin=:ADMIN where id=:USERID";

                    this.command = (IDbCommand)this.connection.CreateCommand ();
                    this.command.CommandText = sql;
                    this.command.CommandType = CommandType.Text;

                    SqliteParameter param1 = new SqliteParameter () { ParameterName = ":ADMIN", Value = true, DbType = DbType.Boolean };
                    SqliteParameter param2 = new SqliteParameter () { ParameterName = ":USERID", Value = userId, DbType = DbType.Int16 };

                    this.command.Parameters.Add (param1);
                    this.command.Parameters.Add (param2);

                    return (bool)(this.command.ExecuteNonQuery () == 0);
                }
                catch(SqliteException e)
                {
                    return false;
                }
            }
        }

        /// <summary>
        /// Inserts a row in the mp_TaxClass table. Returns rows affected count.
        /// </summary>
        /// <param name="guid"> guid </param>
        /// <param name="siteGuid"> siteGuid </param>
        /// <param name="title"> title </param>
        /// <param name="description"> description </param>
        /// <param name="lastModified"> lastModified </param>
        /// <param name="created"> created </param>
        /// <returns>int</returns>
        public static int Create(
            Guid guid,
            Guid siteGuid,
            string title,
            string description,
            DateTime lastModified,
            DateTime created)
        {
            #region Bit Conversion

            #endregion

            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("INSERT INTO mp_TaxClass (");
            sqlCommand.Append("Guid, ");
            sqlCommand.Append("SiteGuid, ");
            sqlCommand.Append("Title, ");
            sqlCommand.Append("Description, ");
            sqlCommand.Append("LastModified, ");
            sqlCommand.Append("Created )");

            sqlCommand.Append(" VALUES (");
            sqlCommand.Append(":Guid, ");
            sqlCommand.Append(":SiteGuid, ");
            sqlCommand.Append(":Title, ");
            sqlCommand.Append(":Description, ");
            sqlCommand.Append(":LastModified, ");
            sqlCommand.Append(":Created )");
            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[6];

            arParams[0] = new SqliteParameter(":Guid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = guid.ToString();

            arParams[1] = new SqliteParameter(":SiteGuid", DbType.String, 36);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = siteGuid.ToString();

            arParams[2] = new SqliteParameter(":Title", DbType.String, 255);
            arParams[2].Direction = ParameterDirection.Input;
            arParams[2].Value = title;

            arParams[3] = new SqliteParameter(":Description", DbType.Object);
            arParams[3].Direction = ParameterDirection.Input;
            arParams[3].Value = description;

            arParams[4] = new SqliteParameter(":LastModified", DbType.DateTime);
            arParams[4].Direction = ParameterDirection.Input;
            arParams[4].Value = lastModified;

            arParams[5] = new SqliteParameter(":Created", DbType.DateTime);
            arParams[5].Direction = ParameterDirection.Input;
            arParams[5].Value = created;

            int rowsAffected = 0;
            rowsAffected = SqliteHelper.ExecuteNonQuery(GetConnectionString(), sqlCommand.ToString(), arParams);
            return rowsAffected;
        }

        /// <summary>
        /// Updates the TrackOrder values for the tracks that remain for the PlayerID by incrementing any Tracks that have a TrackOrder value
        /// greater than the provided trackOrder.
        /// </summary>
        /// <param name="playerID">The ID of the Player.</param>
        /// <param name="trackOrder">The TrackOrder value.</param>
        /// <returns>The number of rows affected by the update.</returns>
        public static int AdjustTrackOrdersForDelete(int playerId, int trackOrder)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("UPDATE mp_MediaTrack ");
            sqlCommand.Append("SET TrackOrder = TrackOrder - 1 ");
            sqlCommand.Append("WHERE ");
            sqlCommand.Append("PlayerID = :PlayerID ");
            sqlCommand.Append("AND TrackOrder > :TrackOrder ");
            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[2];

            arParams[0] = new SqliteParameter(":PlayerID", DbType.Int32);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = playerId;

            arParams[1] = new SqliteParameter(":TrackOrder", DbType.Int32);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = trackOrder;

            int rowsAffected = SqliteHelper.ExecuteNonQuery(
                ConnectionString.GetConnectionString(),
                sqlCommand.ToString(),
                arParams);

            return rowsAffected;
        }

        public static bool Delete(
			string loginProvider, 
			string providerKey, 
			string userId)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("DELETE FROM mp_UserLogins ");
            sqlCommand.Append("WHERE ");
            sqlCommand.Append("LoginProvider = :LoginProvider AND ");
            sqlCommand.Append("ProviderKey = :ProviderKey AND ");
            sqlCommand.Append("UserId = :UserId ");
            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[3];

            arParams[0] = new SqliteParameter(":LoginProvider", DbType.String, 128);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = loginProvider;

            arParams[1] = new SqliteParameter(":ProviderKey", DbType.String, 128);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = providerKey;

            arParams[2] = new SqliteParameter(":UserId", DbType.String, 128);
            arParams[2].Direction = ParameterDirection.Input;
            arParams[2].Value = userId;

            int rowsAffected = SqliteHelper.ExecuteNonQuery(
                ConnectionString.GetConnectionString(),
                sqlCommand.ToString(),
                arParams);

            return (rowsAffected > 0);
        }

 public override IDataParameter CreateParameter(string name, DbType dbType, object value)
 {
     SqliteParameter p = new SqliteParameter(name);
     p.DbType = dbType;
     p.Value = value;
     return p;
 }

        public static bool DeleteByModule(int moduleId)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("DELETE FROM mp_MediaFile ");
            sqlCommand.Append("WHERE ");
            sqlCommand.Append("FileID  ");
            sqlCommand.Append("IN (");
            sqlCommand.Append("SELECT FileID FROM mp_MediaFile WHERE TrackID IN (");
            sqlCommand.Append("SELECT TrackID FROM mp_MediaTrack WHERE PlayerID IN (");
            sqlCommand.Append("SELECT PlayerID FROM mp_MediaPlayer WHERE ModuleID = :ModuleID");
            sqlCommand.Append(")");
            sqlCommand.Append(")");
            sqlCommand.Append(")");
            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[1];

            arParams[0] = new SqliteParameter(":ModuleID", DbType.Int32);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = moduleId;

            int rowsAffected = SqliteHelper.ExecuteNonQuery(
                ConnectionString.GetConnectionString(),
                sqlCommand.ToString(),
                arParams);

            return (rowsAffected > 0);
        }

        public static int Add(
            Guid guid,
            Guid siteGuid,
            string folderName)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("INSERT INTO mp_SiteFolders (");
            sqlCommand.Append("Guid, ");
            sqlCommand.Append("SiteGuid, ");
            sqlCommand.Append("FolderName )");

            sqlCommand.Append(" VALUES (");
            sqlCommand.Append(":Guid, ");
            sqlCommand.Append(":SiteGuid, ");
            sqlCommand.Append(":FolderName );");

            SqliteParameter[] arParams = new SqliteParameter[3];

            arParams[0] = new SqliteParameter(":Guid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = guid.ToString();

            arParams[1] = new SqliteParameter(":SiteGuid", DbType.String, 36);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = siteGuid.ToString();

            arParams[2] = new SqliteParameter(":FolderName", DbType.String, 255);
            arParams[2].Direction = ParameterDirection.Input;
            arParams[2].Value = folderName;

            int rowsAffected = 0;
            rowsAffected = SqliteHelper.ExecuteNonQuery(GetConnectionString(), sqlCommand.ToString(), arParams);
            return rowsAffected;
        }

        public static bool AccountLockout(Guid userGuid, DateTime lockoutTime)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("UPDATE mp_Users ");
            sqlCommand.Append("SET IsLockedOut = 1,  ");
            sqlCommand.Append("LastLockoutDate = :LockoutTime  ");
            sqlCommand.Append("WHERE UserGuid = :UserGuid  ;");

            SqliteParameter[] arParams = new SqliteParameter[2];

            arParams[0] = new SqliteParameter(":UserGuid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = userGuid.ToString();

            arParams[1] = new SqliteParameter(":LockoutTime", DbType.DateTime);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = lockoutTime;

            int rowsAffected = 0;

            rowsAffected = SqliteHelper.ExecuteNonQuery(
                GetConnectionString(),
                sqlCommand.ToString(),
                arParams);

            return (rowsAffected > 0);
        }

        public Bill LoadFavoriteBill(int id)
        {
            Bill favBill;

            using (var connection = new SqliteConnection (connectionString)) {
                using (var cmd = connection.CreateCommand ()) {
                    connection.Open ();

                    cmd.CommandText = "SELECT * FROM FavoriteBills WHERE id = @id";
                    var idParam = new SqliteParameter ("@id", id);
                    cmd.Parameters.Add (idParam);

                    using (var reader = cmd.ExecuteReader ()) {
                        reader.Read ();
                        favBill = new Bill {
                            Id = Convert.ToInt32 (reader ["id"]),
                            Title = (string)reader ["title"],
                            ThomasLink = (string)reader ["thomas_link"],
                            Notes = reader["notes"] == DBNull.Value ? "" : (string)reader["notes"]
                        };
                    }
                }
            }

            return favBill;
        }

 private static SqliteParameter CreateParameter(string paramName, DbType paramType, object paramValue)
 {
     var param = new SqliteParameter();
     param.DbType = paramType;
     param.ParameterName = paramName;
     param.Value = paramValue;
     return param;
 }

        /// <summary>
        /// Inserts a row in the mp_Surveys table. Returns rows affected count.
        /// </summary>
        /// <param name="surveyGuid"> surveyGuid </param>
        /// <param name="siteGuid"> siteGuid </param>
        /// <param name="surveyName"> surveyName </param>
        /// <param name="creationDate"> creationDate </param>
        /// <param name="startPageText"> startPageText </param>
        /// <param name="endPageText"> endPageText </param>
        /// <returns>int</returns>
        public static int Add(
            Guid surveyGuid,
            Guid siteGuid,
            string surveyName,
            DateTime creationDate,
            string startPageText,
            string endPageText)
        {
            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("INSERT INTO mp_Surveys (");
            sqlCommand.Append("SurveyGuid, ");
            sqlCommand.Append("SiteGuid, ");
            sqlCommand.Append("SurveyName, ");
            sqlCommand.Append("CreationDate, ");
            sqlCommand.Append("StartPageText, ");
            sqlCommand.Append("EndPageText )");

            sqlCommand.Append(" VALUES (");
            sqlCommand.Append(":SurveyGuid, ");
            sqlCommand.Append(":SiteGuid, ");
            sqlCommand.Append(":SurveyName, ");
            sqlCommand.Append(":CreationDate, ");
            sqlCommand.Append(":StartPageText, ");
            sqlCommand.Append(":EndPageText )");
            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[6];

            arParams[0] = new SqliteParameter(":SurveyGuid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = surveyGuid.ToString();

            arParams[1] = new SqliteParameter(":SiteGuid", DbType.String, 36);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = siteGuid.ToString();

            arParams[2] = new SqliteParameter(":SurveyName", DbType.String, 255);
            arParams[2].Direction = ParameterDirection.Input;
            arParams[2].Value = surveyName;

            arParams[3] = new SqliteParameter(":CreationDate", DbType.DateTime);
            arParams[3].Direction = ParameterDirection.Input;
            arParams[3].Value = creationDate;

            arParams[4] = new SqliteParameter(":StartPageText", DbType.Object);
            arParams[4].Direction = ParameterDirection.Input;
            arParams[4].Value = startPageText;

            arParams[5] = new SqliteParameter(":EndPageText", DbType.Object);
            arParams[5].Direction = ParameterDirection.Input;
            arParams[5].Value = endPageText;

            int rowsAffected = 0;
            rowsAffected = SqliteHelper.ExecuteNonQuery(GetConnectionString(), sqlCommand.ToString(), arParams);
            return rowsAffected;
        }

        public static int CountUsersNotSubscribedByLetter(Guid siteGuid, Guid letterInfoGuid, bool excludeIfAnyUnsubscribeHx)
        {
            int intExcludeIfAnyUnsubscribeHx = 0;
            if (excludeIfAnyUnsubscribeHx)
            {
                intExcludeIfAnyUnsubscribeHx = 1;
            }

            StringBuilder sqlCommand = new StringBuilder();
            sqlCommand.Append("SELECT COUNT(*)  ");

            sqlCommand.Append("FROM mp_Users u ");

            sqlCommand.Append("WHERE ");
            sqlCommand.Append("u.SiteGuid = :SiteGuid ");
            sqlCommand.Append("AND u.IsDeleted = 0 ");
            sqlCommand.Append("AND u.ProfileApproved = 1 ");
            sqlCommand.Append("AND u.IsLockedOut = 0 ");
            sqlCommand.Append("AND (u.RegisterConfirmGuid IS NULL OR u.RegisterConfirmGuid = '00000000-0000-0000-0000-000000000000') ");

            sqlCommand.Append("AND u.UserGuid NOT IN ");
            sqlCommand.Append("(SELECT ls.UserGuid ");
            sqlCommand.Append("FROM mp_LetterSubscribe ls ");
            sqlCommand.Append("WHERE ls.LetterInfoGuid = :LetterInfoGuid ");
            sqlCommand.Append(") ");

            sqlCommand.Append("AND u.UserGuid NOT IN ");
            sqlCommand.Append("(SELECT lsx.UserGuid ");
            sqlCommand.Append("FROM mp_LetterSubscribeHx lsx ");
            sqlCommand.Append("WHERE ((:ExcludeIfAnyUnsubscribeHx = 1) OR (lsx.LetterInfoGuid = :LetterInfoGuid)) ");
            sqlCommand.Append(") ");

            sqlCommand.Append(";");

            SqliteParameter[] arParams = new SqliteParameter[3];

            arParams[0] = new SqliteParameter(":SiteGuid", DbType.String, 36);
            arParams[0].Direction = ParameterDirection.Input;
            arParams[0].Value = siteGuid.ToString();

            arParams[1] = new SqliteParameter(":LetterInfoGuid", DbType.String, 36);
            arParams[1].Direction = ParameterDirection.Input;
            arParams[1].Value = letterInfoGuid.ToString();

            arParams[2] = new SqliteParameter(":ExcludeIfAnyUnsubscribeHx", DbType.Int32);
            arParams[2].Direction = ParameterDirection.Input;
            arParams[2].Value = intExcludeIfAnyUnsubscribeHx;

            int count = Convert.ToInt32(SqliteHelper.ExecuteScalar(
                GetConnectionString(),
                sqlCommand.ToString(),
                arParams));

            return count;
        }