Timer interval in VB.NET

Question

Hi All,

iam having a timer in my application and want it to be enabled based on the time pollings that are read from config file like below :

 <appSettings>  <add key ="PollBetweenTime" value ="06:10-07:10;19:00-20:00"/>
  <add key ="PollInterval" value ="10000"/>
 </appSettings>
please send me the code for this. Iam new to VB.net