How to decode unicode characters when using ReadAllText?

Question

Right now I'm trying to add ASCII art to my console project using these symbols:

┌─┬┐ ╔═╦╗ ╓─╥╖ ╒═╤╕
│░││ ║▒║║ ║▓║║ │ ││
├─┼┤ ╠═╬╣ ╟─╫╢ ╞═╪╡
└─┴┘ ╚═╩╝ ╙─╨╜ ╘═╧╛
▐ ▌ ▄ ▀ █

To extract images from a text file, I use a command like

Console.WriteLine(File.ReadAllText(@"C:\Users\ME\source\repos\sum\sum\ASCIIlj2.txt"));

but instead of the desired image, I get something like this:

I'm using windows 7 and VS 2019 if that matters. How can I print these characters to the console in the way I need?

UPD: In this case, if I insert characters into the code, the code directly (like this)

Console.WriteLine("┌─┬┐ ╔═╦╗ ╓─╥╖");

Everything is displayed correctly.