How to pass list as arguement to WCF

Question

hi friends 

i have to pass list as arguement to WCF  

my code:

  

public string sendData(String details)

{

List<string>Students=new List<string>(); 

Students.Add("Name1");

Students.Add("Name2");

return insert(Students); ///error in this part show cannot poss list as arguement

} 

 

my WCF service is

 

public string insert(List<string> details)

{

..........

............ 

}