https://www.php1.cn/detail/-CSharpTips-C-_D_cd072edb.html 它的核心原理是,SQLiteDataReader将字符转成utf-8之前,在执行sql的时候,抢先一步将数据库里面的内容(byte)转换为16进制格式的字符串。 读取出来之后再经过两步还原,就得到了原来的字符内容了。 因为原贴的是别的地方从园子里盗贴的,所以,它有...
ExecuteReader(); while (reader.Read()) { Console.WriteLine(reader["ColumnName"]); } 6、关闭连接。当完成对SQLite数据库的操作时,应该关闭连接。以下是一个关闭SQLite连接的示例代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 connection.Close(); 结语 使用就这么简单。本文把使用sqlite步骤列...
SQLite Reader is an extension that helps you easily browse, edit and render SQLite databases. You can execute any SQLite command that you would like (SQL and SQLite have many differences but SQLite has most of the SQL standard). This add-on uses SQLite library which is compiled from C lang...
(sql, connection); SQLiteDataReader reader = command.ExecuteReader(); List<string> results = new List<string>(); while (reader.Read()) { string[] row = new string[reader.FieldCount]; for (int i = 0; i < reader.FieldCount; i++) { row[i] = reader[i].ToString(); } results.Add...
using (SQLiteConnection connection = new SQLiteConnection(connectionString)) { connection.Open(); using (SQLiteCommand command = connection.CreateCommand()) { // 设置SQL语句和参数 command.CommandText = "SELECT * FROM TableName"; // 执行查询操作 using (SQLiteDataReader reader = command.ExecuteRead...
SQLiteDataReader dr = cmd.ExecuteReader(); StringBuilder sb = new StringBuilder(); while (dr.Read()) { sb.Append(dr.GetInt32(0)).Append(""n").Append(dr.GetString(1)); } Console.WriteLine(sb); 只要用过ADO.NET的看懂上面的代码都没问题吧,行,我们运行一下吧!
SQLiteDataReader reader =command.ExecuteReader(CommandBehavior.CloseConnection); returnreader; } catch{ connection.Close(); command.Dispose(); throw; } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18.
csharpCopy code if (reader.HasRows) { Console.WriteLine("数据已经存在。"); } else { ...
assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); assert( pPager->errCode==SQLITE_OK ); if( !pagerUseWal(pPager) && pPager->eState==PAGER_OPEN ){ int bHotJournal = 1; /* True if there exists a hot journal-file */ ...
This DB file reader can differentiate the data type using the color scheme. Deleted data, secured deleted data, normal data, & unallocated space can be categorized based on various color schemes using this advanced utility. Index SQLite Database ...