Help server testing with script C#

Question

Hi,
Ok i start :)
I have one server that i want to test - S1.This server(S1) is connected with other server - S2.After i make some request to S1 he check DB on S2 for my ID and return data to S1 and S1 return to me if my ID is there. I need some script that read from one file(txt) data about 10.000 rows(like numbers ... from 1 to 10.000).Reading whole 10k rows one after one...
I want to test S1 to check if will crash or no, how many requests can handle at once .. etc. May be also some option how to make this querys like how many rows per second 10,20,30 ...
Can someone help me with this one ?
Server 1 (S1) is Tomcat.