Hello,

I translated that in English and you asked :

"Hello, please help me, selecting multiple rows in the grid does not work.
In the settings I set all the values ​​\u200b\u200bas it should, but the selection still does not work, what could I have missed? ("

So selecting multiple rows by holding the shift key is the default behavior of the grid. So you don't have to do anything to turn this on. If it's not working, then something in your application is turning it off - so you should check for someplace where you are setting the SelectTypeRow property.

You can refer to this link expaling about the property and its enum:

https://ko.infragistics.com/help/winforms/infragistics.win.ultrawingrid~infragistics.win.ultrawingrid.ultragridoverride~selecttyperow

1. здесь мои формы ,в которых мне нужно выделение нескольких строк,что я могу упускать ,что не даёт мне выделять