{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 祖国的老花朵 的问题《How to paint notebook-like lines as TextBox backgr》','https://www.manongdao.com/q-1092457.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
A bit similar to this question.
My aim is to evocate a notebook-like look of the textbox.
OneNote does something similar, by setting background image of the editing surface. Of course it is not possible to align the lines in OneNote because the text can be freely formatted.
I would like to do this with constant font (no formatting) in WPF. How to paint lines in textbox background that will match the lines of text?
I asked the same question here: Repeat a background brush in WPF
It would be easy to convert to a TextBox.
Best of luck!