ntarDev ProgressBar is a progress bar for asp.net. In the daily asp.net development process, we often encounter situations where a progress bar is needed to represent real-time progress, such as a long-term background task. But Microsoft does not provide an official progress bar control. Usually we think of using AJAX, that is, XMLHTTP to access a page on the server in the background of the browser to obtain real-time progress. This is also the basic principle of this progress bar control. On the basis of realizing the basic functions, in order to facilitate user use, AntarDev ProgressBar is encapsulated as a DLL, which can be used as an asp.net server control and directly added to the toolbar of the VS development tool. At the same time, AntarDev ProgressBar has the following characteristics, which can effectively display the progress of asp.net tasks.