Hello I have downloaded your demo application from your site and trying to plot a real time chart. My aim is to plot a graph with values from the database in every two seconds (Data fetching query will be refreshed in each 2 seconds). Okay i can do this with the help of your application. But I can't see any example for SCROLL BAR ( horizontal). if I can set a scroll bar in chart, I can view the chart of previous one hour data at any time. is this possible? Secondly, can u provide the code to print the chart?
First, you should be posting in the Real-Time Graphics Tools for .Net (VB and C#) forum, not this one.
The Polygraph example program has a scrollbar that controls the horizontal position of a real-time graph. Just let the program run for a couple minutes, the select the stop button and then use the horizontal scrollbar.
See the example programs Dynamometer and Treadmill for printing examples. Chapter 22 in the QCChart2dManual.pdf documentation discusses printing.