C # code review

string xml = "<root><book>8899</book><age></age></root>";

XElement root = Xelement.parse (XML);

String strbook = root. Element ("book"). Value;

string strage = root. Element ("Age"). Value; return as "" instead of NULL

DataTable dt = new DataTable ();

Dt. Columns.Add ("AA");

Dt. Rows.Add (New Object[]{dbnull.value});

string aa = dt. Rows[0][0]. ToString ();//returns to "" instead of NULL

byte[] buf = new byte[1024*1024];

MemoryStream m = new MemoryStream (); Test it out, MemoryStream will automatically release it.

for (int i = 0; i < 1024x768; i++)

{

M.write (buf, 0, buf. Length);

}

C # code review