Project Euler #4 in C# -

i'm attempting project euler problem #4 in c#. problem i'm having when code runs console window briefly appears , goes away. don't know problem i'm relatively new programming.

using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks;  namespace consoleapplication1 {     class program     {         static void main(string[] args)         {             (int = 1000; > 100; i--)                 (int j = 1000; j > 100; j--)                     palcheck(i * j);         }          static void palcheck(int original)         {             var reversed = new string(convert.tostring(original).tochararray().reverse().toarray());              if (convert.tostring(original) == reversed)                 console.writeline(original);              console.readkey();         }     } } 

the code seems stuck @ line console.readkey() @ line of code, program waiting input key. since have not used message before readkey(), don't realize program waiting input , not stuck.

move console.readkey() after palcheck(i * j) , should see output on console screen.