Convert the output (byte[ ]) of multiple template Report into a single xls sheet

Hi all,

 

I have multiple reports (.rpx file) created in Report Designer. I want all those reports combined into a single output file.

 

Things which i have done,

• Used TemplateReport  activity to generate byte[ ] output for each report file ,.rpx.

 

Query : How to merge all the byte [] outputs into a single output ?