使用不同的编码在SQL服务器中搜索波斯语字符和单词

I have a text file that contains Persian words and the file is saved using ANSI encoding. when I try to read the Persian words from the text file, I get some characters like '?'. In order to solve the problem, I wrote a method that change the file encoding to UTF8 and re-write the text file. the method:I have a text file that contains Persian words