The techniques of multi-thread and applying the asynchronous delegate and callb ack method to the application are studied by the example of a Window s-based application that uses the Windows form to perform a Web pages search operation.

Through introducing asynchronous invocation mechanism and cache technology,this paper proposed a real-time Web GIS optimization model,resolving the contradiction between user experience and spatial analysis ability of the current Web GIS.

net framework programs to perform asynchronous transfer of Web service under network environment,and points out that when developing an application,different asynchronous transferring methods can be used in terms of different requirements,and tested,and gives the definite solutions through analyzing its performances.

AJAX introduced asynchronous transfer technology to promote local renewable pages, which saved the web bandwidth and enhanced useres experience.

By utilizing the technique of CORBA,the function of acquiring network management information in the SNMP protocol can be extended and the asynchronous invoking of network management information can be implemented.

This paper mainly introduces the asynchronous invoking technology of Web Services based on polling in.

This paper mainly introduces the asynchronous invoking technology of Web services based on waiting in .