public static void AlterDB(string fileName) { using (IDBHelpers dbHelpers = new DBHelpers(fileName)) { using (DataTable dt = dbHelpers.GetDataTable("pragma table_info(RecentBattles)")) { var rbGlobalAvgDefPoints_check = (from x in dt.AsEnumerable() where x.Field <string>("name") == "rbGlobalAvgDefPoints" select x).DefaultIfEmpty(null).FirstOrDefault(); if (rbGlobalAvgDefPoints_check == null) { string sql = "Alter table RecentBattles Add rbGlobalAvgDefPoints REAL default (0) NULL"; dbHelpers.ExecuteNonQuery(sql); } } using (DataTable dt = dbHelpers.GetDataTable("pragma table_info(RecentBattles_Session)")) { var fieldCheck = (from x in dt.AsEnumerable() where x.Field <string>("name") == "rsUEDateFrom" select x).DefaultIfEmpty(null).FirstOrDefault(); if (fieldCheck == null) { string sql = "Alter table RecentBattles_Session Add rsUEDateFrom real NULL"; dbHelpers.ExecuteNonQuery(sql); sql = "Alter table RecentBattles_Session Add rsUEDateTo real NULL"; dbHelpers.ExecuteNonQuery(sql); sql = @"UPDATE RecentBattles_Session SET rsUEDateFrom = (SELECT ifnull(min(RecentBattles.rbBattleTime), datetime('now', 'unixepoch')) FROM RecentBattles WHERE RecentBattles.rbSessionID = RecentBattles_Session.rsKey ) , rsUEDateTo = (SELECT ifnull(Max(RecentBattles.rbBattleTime), datetime('now', 'unixepoch')) FROM RecentBattles WHERE RecentBattles.rbSessionID = RecentBattles_Session.rsKey ) WHERE EXISTS ( SELECT * FROM RecentBattles WHERE RecentBattles.rbSessionID = RecentBattles_Session.rsKey )"; dbHelpers.ExecuteNonQuery(sql); sql = @"UPDATE RecentBattles_Session SET rsUEDateFrom = strftime('%s', '2000-01-01 00:00:00') , rsUEDateTo = strftime( '%s', '2000-01-01 00:00:01') WHERE rsUEDateFrom is null"; dbHelpers.ExecuteNonQuery(sql); dbHelpers.ExecuteNonQuery(sql); sql = @"update RecentBattles_Session set rsUEDateTo = strftime('%s', '2037-01-01 00:00:00') where rsID = (select max(rsID) from RecentBattles_Session)"; dbHelpers.ExecuteNonQuery(sql); } } } }
private void button1_Click(object sender, EventArgs e) { using (DBHelpers db = new DBHelpers(_dbPath)) { dataGridView1.DataSource = db.GetDataTable(textBox1.Text); } }
public static void ReIndexDB(string fileName) { using (IDBHelpers dbHelpers = new DBHelpers(fileName)) { string sql = @"SELECT name FROM sqlite_master WHERE type='table' AND name='RecentBattles';"; using (DataTable tableCheck = dbHelpers.GetDataTable(sql)) { foreach (DataRow row in tableCheck.Rows) { dbHelpers.ExecuteNonQuery(String.Format("reindex '{0}'", row["name"])); } } } }
public static void Create(string fileName) { using (IDBHelpers dbHelpers = new DBHelpers(fileName)) { dbHelpers.CreateDatabase(fileName); string sql = @"SELECT name FROM sqlite_master WHERE type='table' AND name='RecentBattles';"; using (DataTable tableCheck = dbHelpers.GetDataTable(sql, true)) { if (tableCheck.Rows.Count <= 0) { dbHelpers.ExecuteNonQuery(CreateRecentBattlesTable(), true); } } sql = @"SELECT name FROM sqlite_master WHERE type='table' AND name='RecentBattles_Session';"; using (DataTable tableCheck = dbHelpers.GetDataTable(sql, true)) { if (tableCheck.Rows.Count <= 0) { dbHelpers.ExecuteNonQuery(CreateRecentBattlesSessionTable(), true); } } } }