Excel empty values with null while import Excel to SQL in SSIS

Hi ,

While importing excel(100 columns) to SQL server table:

Empty cell data parsed as NULL in SQL, but I need Same like empty->empty  .., NULL-->NULL

I dont want use with ISNULL(exp) in Derived column in Data flow ??--(because of lot of columns)

Is possible with Script component ??

So How can I do ?

Thanks