Problems on class writing?

Question

Hello! I want to write a class that can get the System time, but why I can't call it from my next Windows Form class? using System; namespace ClassTester { ///

/// Summary description for TimeStamp. ///

public class TimeStamp { public TimeStamp() { // // TODO: Add constructor logic here // } public string TClock() { string TimeInString=""; int hour=DateTime.Now.Hour; int min=DateTime.Now.Minute; int sec=DateTime.Now.Second; TimeInString=(hour < 10)?"0" + hour.ToString() :hour.ToString(); TimeInString+=":" + ((min<10)?"0" + min.ToString() :min.ToString()); TimeInString+=":" + ((sec<10)?"0" + sec.ToString() :sec.ToString()); return TimeInString; } } } Please give me reply asap. Thanks!