when I have to put excel data to datase got error invalid column name but excel column name ane database column name are same. plz gives any suggeation.
The Database should have exact number of columns with exact names then only this will work.
Try using Bulk Insert
Thanks,
Ashok 
I gives the exact column name but did not work it.
solve the above problem but got the error only one connection can be use plz,
give any solution.
more details of the error please.
Are you establishing more than one connection? The error states that there are more than one connections.
Thanks,
Ashok