Diagonal Lines Pattern

Hello,

I would like to ask you a question. How I can make a pattern with diagonal lines?

I tried in so many ways but when I'm inserting the pattern, the line are not continous (one line is not continued with another one).

I don't want to use any hatch macros , I just want to make a full color pattern.

I know that maybe it's a very simple thing but till now I didn't figure it out how to do it.

Thank's a lot for all your work on this forum!