Dynamics NAV 的 Classic Client 和 RoleTailored Client是两种Dynamics NAV的客户端类型。
其中的RoleTailored是sp1中新添加的客户端类型。拥有更好的外观和可定制化功能，并且可以使用Add-in来做扩展开发。
Classic Client和RoleTailored是可同时存在，共同运行的。但新版本中的某些组件不支持Classic Client。如下：
Forms and Pages: Forms are used in the Classic client, and pages are used in the RoleTailored client.
Reports: From the Classic client, you can view reports in the Classic report layout. From the RoleTailored client, you can view reports in either the Classic report layout or the client report definition (RDLC) report layout.
Dataports and XMLports: Dataports are not supported in the RoleTailored client. You use XMLports in the RoleTailored client to import and export data.
ISSERVICETIER System Function: You can use the ISSERVICETIER function to execute different code based on the client that you are running.
C/AL Behavior: Some C/AL functions behave differently in the Classic client and the RoleTailored client.
Using File Data Type Functions: From the Classic client, local files are accessed on the client. From the RoleTailored client, local files are accessed on Microsoft Dynamics NAV Server.
Automation Objects: In the Classic client, Automation objects run on the client. In the RoleTailored client, when you create an object, you can specify whether it runs on Microsoft Dynamics NAV Server or on the RoleTailored client.
Source Expression Evaluation: Source expressions are evaluated at different times on the Classic client and the RoleTailored client.
System Tables: Several System tables are not supported in a three-tier environment.
Supported C/AL Data Types, Functions, Properties, and Triggers Some C/AL functions and properties are not supported in the Classic client, and some functions and properties are not supported in the RoleTailored client.
以上内容摘抄自帮助手册。清晰的写明了各种组件的位置和区别。
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