In the course of agricultural equipments reliability experiment，masses of experiment data and multimedia files were managed based on Web application and rich client built by Silverlight technology. Because of the change of data processing and the nonsupport of data binding by Silverlight technology, a data binding method was put forward by asynchronous transmission, the dynamic data was changed into static data in XML data sources, so the data in database could be dynamically bound by Silverlight application and managed in the form of database and file server. The load of file server could be effectively reduced. The storage security and processing efficiency of test data were enhanced.