Fron DataSet to SQL

I have a web service that pass me a DataSet, I get all data correctly, I
can 
even load it on a DataGridView, buyt I want to pass tha dataset to a 
Internal SQL Server, exact data structure , with no modification. What is 
the best wat you pass the Dataset to a table on the Internal SQL Server?

Any online Examples ? I did not dinf a good one in google. in C#

thanks