SqliteDataReader.cs 提供用于读取针对 SQLite 数据库执行的命令结果的方法。 C# publicclassSqliteDataReader:System.Data.Common.DbDataReader 继承 DbDataReader SqliteDataReader 属性 展开表 方法 适用于 产品版本 Microsoft.Data.SQLite1.0, 1.1, 2.0, 2.1, 2.2, 3.0, 3.1, 5.0, 6.0, 7.0, 8.0, 9.0 ...
(ApplicationData.Current.LocalFolder.Path,"sqliteSample.db");using(vardb =newSqliteConnection($"Filename={dbpath}")) { db.Open();varselectCommand =newSqliteCommand ("SELECT Text_Entry from MyTable", db); SqliteDataReader query = selectCommand.ExecuteReader();while(query.Read()) { entries.Add...
static void NativeMain() { // Open the database--db is our "handle" to it IntPtr db; if (SQLiteNative.sqlite3_open(@"cities.sqlite", out db) == SQLiteNative.SQLITE_OK) { // Prepare a simple DDL "CREATE TABLE" statement string query = "CREATE TABLE City " + "(name TEXT, sta...
(SqliteConnection db =newSqliteConnection($"Filename={dbpath}")) { db.Open(); SqliteCommand selectCommand =newSqliteCommand ("SELECT Text_Entry from MyTable", db); SqliteDataReader query = selectCommand.ExecuteReader();while(query.Read()) { entries.Add(query.GetString(0)); } }returnentries...
string connectionString = $"Data Source={dbFilePath};Version=3;"; // 创建数据库连接 using (SQLiteConnection connection = new SQLiteConnection(connectionString)) { connection.Open(); // 创建表 CreateTable(connection); // 插入数据 InsertData(connection, "John Doe", 30); ...
using (var connection = new SqliteConnection("Data Source=hello.db")) { connection.Open(); var command = connection.CreateCommand(); command.CommandText = @" SELECT name FROM user WHERE id = $id "; command.Parameters.AddWithValue("$id", id); using (var reader = command.ExecuteReader())...
A one-to-many relationship is like that of a customer ordering items online. One customer can have many orders, but each order belongs to one customer. The author_book_publisher.db database has a one-to-many relationship in the form of authors and books. Each author can write many books...
services.AddScoped<IDbConnection>(sp => { stringconnStr ="Data Source=test.db"; varconn =newSqliteConnection(connStr); conn.Open(); returnconn; }); DI魅力渐显_依赖注入\UserDAO.cs privatereadonlyIDbConnection conn; usingvardt = SqlHelper.ExecuteQuery(conn,$"select * from T_Users where UserN...
case DbType.Oracle: strConnectionString = @"Data Source= (DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST =IP)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME =LABELING)));User ID=label;Password=label20221123;"; //strConnectionString = "Data Source= (DESCRIPTION =(ADDRESS ...
db = connection.Handle; sqlite3_trace( db, (_, statement) => Console.WriteLine(statement), null); 下列範例示範呼叫 sqlite3_stmt_status 以查看 SQL 陳述式編譯成的 SQLite 虛擬機器步驟數目:C# 複製 // Get the underlying sqlite3_stmt object var stmt = reader.Handle; var steps = sqlite3...