c# list pointlatlng to string with separator code example

Example 1: c# convert list to string

string combindedString = string.Join( ",", myList.ToArray() );

Example 2: c# array.join

String Array...
AB
BC
CD
DE
EF
FG
GH
IJ
Result (after joining) = AB*BC*CD*DE*EF*FG*GH*IJ