I want to store multiple values in single key like:
HashTable obj = new HashTable(); obj.Add(\"1\", \"test\"); obj.Add(\"1\", \"Test1\");
Right
JFYI, you can declare your dic this way:
Dictionary> dic = new { { 1, new List { "Test1", "test1" }, { 2, new List { "Test2", "test2" } };