There is a variety of values you can set on the gauge, ranging from needle values to scale ranges. Perhaps you can include a screenshot of the type of value you would like to set. In the meantime, I suggest looking at online help and samples to get better acquainted with the gauge control.

http://help.infragistics.com/NetAdvantage/ASPNET/2010.3/CLR4.0/?page=WebGauge_Creating_a_WebGauge_Using_Code.html

https://ko.infragistics.com/samples/aspnet/gauge/overview