string header(crossWordHeader_Type type, int i, out string value) {
value = null;
if (type == crossWordHeader_Type.no) return null;
if (type == crossWordHeader_Type.number) value = "@" + (i + 1).ToString();
else {
char ch = Convert.ToChar(Convert.ToInt32('A') + i);
value = "@" + Convert.ToString(ch);
}
return value;
}
public cross_word() {
this.row_headerField = crossWordHeader_Type.no;
this.col_headerField = crossWordHeader_Type.no;
}