Wrap long line that has a string

Question

Hello:
 
I have a long line that has a string in it. How can I wrap the line to multiple lines? The line I have is below. I tried the '_' but it will not take it for the string.
string querystring = "Driver={Microsoft Text Driver (*.txt; *.csv)};defaultdir=C:\\IceCorp;driverid=27;fil=text;filedsn=C:\\IceCorp\\IP_Login.csv;maxbuffersize=2048;maxscanrows=8;pagetimeout=5;safetransactions=0;threads=3;uid=admin;usercommitsync=Yes";