protected DbProviderFactory(); // // 摘要: // 指定特定的 System.Data.Common.DbProviderFactory...，也可以不一样）， 2、我们利用在该抽象类实现的子类中重写DbProviderFactory方法，并在子类的构造函数中为该属性赋值，该值就是已经实现了具体数据库类型的DbProviderFactory。...DbProviderFactory { get; } } 4、在DbHelper编写一些用于实现数据库相关操作的方法，这里就用到了DbProviderFactory类中的方法，以下方法仅供参考...= SqlClientFactory.Instance; } public override DbProviderFactory DbProviderFactory {...= SqlClientFactory.Instance; } public override DbProviderFactory DbProviderFactory {
// Create Date：2008-06-25 public DataSet GetDataSet(string strSql) { DbProviderFactory...strSql, DbParameter[] Parameters) { DataSet dataset = new DataSet(); DbProviderFactory... public int ExecuteNonQuery(string strSql) { int iCount = -1; DbProviderFactory...string ProcedureName, DbParameter[] Parameters) { int iCount = -1; DbProviderFactory...ExectueProcGetDS(string ProcedureName) { DataSet DS = new DataSet(); DbProviderFactory
private DbProviderFactory _dbProviderFactory; private string _connectionString; private..._dbProviderFactory; } set { this...._dbProviderFactory = value; } } /**//// /// The defaull..._dbProviderFactory.CreateDataAdapter(); this...._dbProviderFactory.CreateConnection(); this.
_dbProviderFactory; private DbDataAdapter _dbDataAdapter; #endregion Public..._dbDataAdapter = this.DbProviderFactory.CreateDataAdapter(); } return..._dbProviderFactory = DbProviderFactories.GetFactory(ConfigurationManager.ConnectionStrings[0].ProviderName...public DbProviderFactory DbProviderFactory { get { return..._connection = this.DbProviderFactory.CreateConnection(); this.
CreateConnection(connectionString); } public static DbConnection CreateConnection() { DbProviderFactory...dbconn; } public static DbConnection CreateConnection(string connectionString) { DbProviderFactory...} #endregion #region 执行 public DataSet ExecuteDataSet(DbCommand cmd) { DbProviderFactory...Trans t) { cmd.Connection = t.DbConnection; cmd.Transaction = t.DbTrans; DbProviderFactory...Trans t) { cmd.Connection = t.DbConnection; cmd.Transaction = t.DbTrans; DbProviderFactory
我们通过指定连接字符串名称、隔离级别以及用于创建DbProviderFactory的委托创建TransactionScope对象。...在TransactionScope的构造函数中，如果通过Artech.Transactions.Transaction.Current属性表示的当前事务不存在，则根据DbProviderFactory创建...connectionStringName, IsolationLevel isolationLevel = IsolationLevel.Unspecified, 9: Func DbHelper.GetFactory(cnnstringName); 16: } 17: DbProviderFactory...21: } 22: else 23: { 24: connection = this.DbProviderFactory.CreateConnection
connection.TryOpen(); using (var command = ServiceContext.Database.Provider.DbProviderFactory.CreateCommand...{ var column = table.Columns[i]; var parameter = database.Provider.DbProviderFactory.CreateParameter...connection.BeginTransaction(); using (var command = ServiceContext.Database.Provider.DbProviderFactory.CreateCommand...if (first) { parameter = ServiceContext.Database.Provider.DbProviderFactory.CreateParameter...name = string.Format("{0}p_{1}_{2}", parPrefix, row, col); var parameter = provider.DbProviderFactory.CreateParameter
providerName = ConfigurationManager.ConnectionStrings[connectionStringName].ProviderName; 9: DbProviderFactory...dbProviderFactory = DbProviderFactories.GetFactory(providerName); 10: using (DbConnection...connection = dbProviderFactory.CreateConnection()) 11: { 12: connection.ConnectionString...} 49: } 注：为了使上面一段代码能够同时用于不同的数据库类型，比如SQL Server和Oracle，我通过提取连接字符串配置中的数据库提供者（DbProvider）名称，借此创建相应的DbProviderFactory...所有ADO.NET对象，包括DbConnection、DbCommand、DbParameter以及DbTransaction均通过DbProviderFactory创建，所以并不和具体的数据库类型绑定在一起
System.Data.SQLite; // 创建数据库文件 File.Delete("test1.db3"); SQLiteConnection.CreateFile("test1.db3"); DbProviderFactory...System.Data.SQLite; // 创建数据库文件 File.Delete("test1.db3"); SQLiteConnection.CreateFile("test1.db3"); DbProviderFactory
另外，GenericDatabase 类允许使用应用程序块与任何配置的 ADO.NET 2.0 DbProviderFactory 对象一起使用。...ProviderName 属性必须是一个在 DbProviderFactory 类中指定的提供程序名称。 在 TypeName 属性节中。...providerName 名称必须是一个在 DBProviderFactory 类中指定的提供程序的名称。此属性是必须的。...必须提供连接字符串和 DbProviderFactory 对象。在这种情况下，DbProviderFactory 对象是 OdbcFactory 。...使用提示 DatabaseFactory 对象基于 ADO.NET 的 DbProviderFactory 对象决定哪种 Database 对象被创建，DbProviderFactory 与连接字符串相关联
MapperUtil(); } public void ExecuteCommand() { string strSql = (DB.DbProviderFactory.ToString...T : TModel { List list = new List(); string strSql = (DB.DbProviderFactory.ToString
connectionStringSection = ConfigurationManager.ConnectionStrings[connectionStringName]; DbProviderFactory... dbProviderFactory = DbProviderFactories.GetFactory(connectionStringSection.ProviderName); ...using (DbConnection connection = dbProviderFactory.CreateConnection()) { ...KeyValuePair param in parameters) { parameter = dbProviderFactory.CreateParameter
wrapperProviderInvariantNames) { foreach (string invariantName in wrapperProviderInvariantNames) { DbProviderFactory
_dbProviderFactory; 12: private string _connectionString; 13: private DbConnection..._dbProviderFactory.CreateConnection(); 16: connection.ConnectionString = this...._dbProviderFactory is SqlClientFactory) 28: { 29: SqlCommandBuilder.DeriveParameters..._dbProviderFactory is OracleClientFactory) 34: { 35: OracleCommandBuilder.DeriveParameters..._dbProviderFactory = DbProviderFactories.GetFactory(providerName); 67: } 68: 69:
File.Exists(_dbFile)) { File.Delete(_dbFile); } SQLiteConnection.CreateFile(_dbFile); DbProviderFactory
System.Data.Common.DbCommand System.Data.Common.DbTransaction System.Data.Common.DbParameterCollection System.Data.Common.DbProviderFactory
ID=SCOTT;Password=tiger"; string ProviderName = "Oracle.DataAccess.Client"; DbProviderFactory...ID=SCOTT;Password=tiger"; string ProviderName = "Oracle.DataAccess.Client"; DbProviderFactory
包括完整的 DbProviderFactory 支持, 自动的分布式事务调用, 广泛的模式支持, 此外所有的类都是从 ADO.NET 2.0 的基类继承下来的.
System.Data.Common.DbProviderFactory 还没有研究，好像可以利用它来实现，去掉switch。
DbProviderFactory赋值给创建的Database的DatabaseProviderFactory属性（DbProviderFactory是一个很有价值的Type，为我们创建一个泛型的ADO.NET
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