Thank you for reading my question.
thi is my xml file.
1: for the tag a, b, c, not always here, maybe missing.
2: for the tag pre, maybe many, but at least one.
3: modify, yes, contains, deleting, changing value.
how to read / modify this xml file in C#?
i tried somet solutions, but my C# is bad,,,i can't do it. could someone give me a sample code? thank you very much!