need explanation C# below code

Question

Hi All,

 

can anyone explain why we use continuewith in C# 

 

 

return await Task.Run(() =>

{

using (sample d=new sample())

{

classa obj=new classa();

obj.name=a.name;

obj.address=a.address;

return d.create().continuewith((b)=>

return 'welcome'; 

) ;

} 

 

why we use create.continuewith and why we write inside Task.Run()

 

 

can anyone explain the above code