documetME ESTE CODIGO int x, resi,a; x = int.Parse(txtNum.Text); resi = x; string r; r = ""; for (a = 0; x > 0; a ++) { resi = x % 2; r = resi.ToString() + r; x = x / 2; } lblResul.Text = r;

You can use the following code to get the code of the selected text in the editor:
var editor = ace.edit("editor");
var selection = editor.getSelection();
var range = selection.getRange();
var start = range.start;
var end = range.end;
var code = editor.session.getTextRange(