Hi Yasin,
reading data from your global data type if described here: http://docs.composite.net/Data/AccessingDataWithCSharp/How-to-Query-Data-Using-LINQ#_How_to_Query
You then loop through the data and emit your HTML - to convert a media reference string into a URL in an asp.net control see http://docs.composite.net/Functions/User-Control-Functions/Rendering-URLs
reading data from your global data type if described here: http://docs.composite.net/Data/AccessingDataWithCSharp/How-to-Query-Data-Using-LINQ#_How_to_Query
You then loop through the data and emit your HTML - to convert a media reference string into a URL in an asp.net control see http://docs.composite.net/Functions/User-Control-Functions/Rendering-URLs