c# - Using linq within a ForEach statement -

i trying use linq foreach statement display output in groups.

my code looks this:

rooms.tolist()      .foreach(room => room.roomcontents.tolist()          .foreach(roomcontents => roomcontents.supportedcommands.tolist()              .foreach(command => console.write("\nthe commands {0} are: {1} ", roomcontents.name, command))));            console.readline(); 

current output:

the command tap use command key drop command key command key use command bucket drop command bucket command bucket use 

my aim display output in more friendly way, i.e. grouping commands based on room content. output display this.

desired output:

the commands tap  use commands key  drop use commands bucket drop use 

this cleaner traditional foreach loops:

foreach(var room in rooms) {     foreach(var roomcontents in room.roomcontents)     {         console.writeline("the commands {0} are:",roomcontents.name);         foreach(command in roomcontents.supportedcommands)             console.writeline(command);     } } 

or slightly simplified:

foreach(var roomcontents in rooms.selectmany(room => room.roomcontents)) {     console.writeline("the commands {0} are:",roomcontents.name);     foreach(command in roomcontents.supportedcommands)         console.writeline(command); } 

you flatten , group entire collection of contents in rooms.

other benefits:

• you can debug foreach loops more embedded lambda.
• you don't need call tolist on each collection in order access foreach method (it's intentionally not linq extension method)