Copy Data From One Table To Another using SqlBulkCopy

Question

Hi Sir 

I Want to copy data from one table to another using mapping function. Suppose i have product Info Table having some fields ProductCode, name etc....

Now i want to copy this data to another table if i have same Product Code to another table then data should be update......

If any suggession then tell me . I Have to do it from SqlBulkCopy Method...

 

Thanks In Advance