UniDAC不能显示access中的olE对象（放图片，格式是bmp，jpg）！

cookblack 2009-11-25 09:51:57

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cookblack 2009-11-25

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原来是 UniDAC 对Access的支持不是很好，mssql的就没问题。开来显示图片还得用ADO

Universal Data Access Components (UniDAC) is a powerful library of nonvisual cross-database data access components for Delphi, Delphi for .NET, C++Builder, and Free Pascal. The UniDAC library is designed to help programmers develop faster and cleaner cross-database applications. UniDAC is a complete replacement for standard database connectivity solutions and presents an efficient native alternative to the Borland Database Engine and dbExpress for access to Oracle, SQL Server, MySQL, InterBase, Firebird, SQLite, DB2, Microsoft Access, Advantage Database Server, Adaptive Server Enterprise, and other databases (using ODBC provider). UniDAC is based on the well-known Data Access Components from Devart such as ODAC, SDAC, MyDAC, IBDAC, and PgDAC. We have joined the experience of long-term successful development into one great product which provides unified access to popular databases such as Oracle, Microsoft SQL Server, MySQL, InterBase, Firebird, SQLite, DB2, Microsoft Access, Advantage Database Server, Adaptive Server Enterprise, and other databases (using ODBC provider). The UniDAC library is actively developed and supported by Devart Team. If you have questions about UniDAC, email the developers at unidac@devart.com or visit UniDAC online at http://www.devart.com/unidac/. Advantages of UniDAC Technology UniDAC is very convenient in setup and usage. It provides transparent server-independent interface for working with different databases. Selected database provider ensures the best way to perform operations on the server. Universal Data Access UniDAC provides transparent server-independent interfaces for working with different databases, and lets you change the client engine for specific server type just by changing single connection option. It means that you can easily switch between database servers in your cross-database UniDAC-based application. Server-Aware Providers UniDAC chooses the best way specific to the server to perform most operations. Every UniDAC data provider uses server-specific native connectivity. All operations with data are performed by providers automatically considering peculiarities of the selected database server. Optimized Code The goal of UniDAC is to enable developers to write efficient and flexible database applications. The UniDAC library is implemented using advanced data access algorithms and optimization techniques. Classes and components undergo comprehensive performance tests and are designed to help you write high-performance, lightweight data access layers. Compatibility with Other Connectivity Methods The UniDAC interface retains compatibility with standard VCL data access components like BDE. Existing BDE-based applications can be easily migrated to UniDAC and enhanced to take advantage of server-specific features. Development and Support UniDAC is a cross-database connectivity solution that has been actively developed and supported. UniDAC comes with full documentation, demo projects, and fast (usually within one business day) technical support by the UniDAC development team. Find out more about how to get help or submit feedback and suggestions to the UniDAC development team in the Getting Support topic. A description of the UniDAC components is provided in the Component List.

Universal Data Access Components (UniDAC) is a powerful library of nonvisual cross-database data access components for Delphi, Delphi for .NET, C++Builder, and Free Pascal. The UniDAC library is designed to help programmers develop faster and cleaner cross-database applications. UniDAC is a complete replacement for standard database connectivity solutions and presents an efficient native alternative to the Borland Database Engine and dbExpress for access to Oracle, SQL Server, MySQL, InterBase, Firebird, SQLite, DB2, Microsoft Access, Advantage Database Server, Adaptive Server Enterprise, and other databases (using ODBC provider).

Universal Data Access Components(UniDAC) 是一个功能强大的支持多数据库的引擎，可以安装在Delphi, Delphi for .NET, C++Builder。UniDAC 的目的是帮助程序员更快的开发跨数据库应用软件。 UniDAC 是一个完整的标准数据库连接解决方案，可以支持 Oracle, SQL Server, MySQL, InterBase, 和 Firebird。 Universal Data Access Components (UniDAC) is a library of components that provides direct access to most popular database servers from Delphi, Delphi for .NET and, C++Builder. UniDAC can work with such servers as Oracle, Microsoft SQL Server, MySQL, Interbase, Firebird. The UniDAC library is designed to help programmers develop faster and cleaner cross-database applications. UniDAC is a complete replacement for such standard universal technology as dbExpress. UniDAC is a handy in use and efficient data access solution bringing into play many features specific to each server.

Universal Data Access Components (UniDAC) is a library of components that provides direct access to most popular database servers from Delphi, Delphi for .NET and, C++Builder. UniDAC can work with such servers as Oracle, Microsoft SQL Server, MySQL, Interbase, Firebird. The UniDAC library is designed to help programmers develop faster and cleaner cross-database applications. UniDAC is a complete replacement for such standard universal technology as dbExpress. UniDAC is a handy in use and efficient data access solution bringing into play many features specific to each server.

Universal Data Access Components(UniDAC) 是一个功能强大的支持多数据库的引擎，可以安装在Delphi, Delphi for .NET, C++Builder。UniDAC 的目的是帮助程序员更快的开发跨数据库应用软件。 UniDAC是一个完整的标准数据库连接解决方案，可以支持 Oracle, SQL Server, MySQL, InterBase, 和 Firebird。本版本支持以下 IDE： Lazarus1 Delphi 6,7,2005 C++Builder 6 BDS 2006 (Delphi 2006, C++Builder 2006) RAD Studio 2007 (Delphi 2007, C++Builder 2007) RAD Studio 2009 (Delphi 2009, C++Builder 2009) RAD Studio 2010 (Delphi 2010, C++Builder 2010) 3.00.0.2 10-Sep-09 Embarcadero RAD Studio 2010 suppored DB2, Microsoft Access, Advantage Database Server, Adaptive Server Enterprise, and other databases (using ODBC provider) support added Now the subdetail is refreshed before the AfterRefresh event of the detail is called ConnectionTimeout is now used when resolving the host name --------------------------- 该资源是从盒子载到的，点了好几次才载到，所以蛮传一个，方便点。

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