Hello, I have this excel format 
but why after i upload the file, and i use this code:
var temp = sheet.Range["B2"].Cells[0].Value; //this contain null or ""
but
sheet.Range["A2"].Cells[0].Value; //contain /tOrigindoc.
then
sheet.Range["A2"].Cells[0].Value; //contain /tItem/tGI Date/t
B2 become A2, and it become /tOriginDoc.
and the header column become merged in one column with /t/t/t/t/t
as image below
its like everything is merged into one column and there is \t on it,, this is hard for me to manipulate data,, any correction from you guys? please help thanks