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I have a process which reads text from a text file. Overall, it works fine, but in one file, the imported char shows as a triangle with a question mark.

What is this, and what do I do about it?

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  • Which char is it? The first, or a later one? Commented Sep 6, 2013 at 13:55
  • Look at neoistheone's answer. You probably need to switch to a different encoding. If you provide code, somebody might give concrete hints. Commented Sep 6, 2013 at 14:15
  • I did some code to see the actual character code, and it comes out to 65533 Commented Sep 6, 2013 at 14:51
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    U+FFFD is the Unicode substitution character. A diamond, not a triangle. The text file is not encoded in utf-8, Encoding.Default is the usual next guess. Commented Sep 6, 2013 at 15:01
  • @Hans Thank you. I did not know it is the Unicode substitution character. The file I am reading is a plan text file. But it came across the wire, and I think the char got corrupted. All the rest can be read just fine. Commented Sep 6, 2013 at 15:17

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You're using the wrong encoding. You probably need to use UTF8 vs. ASCII. Now, I have no idea how to help with your code, well because there is no code in the question, but the encoding is your problem.

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