Resharper always suggesting me to make const string instead of string

Question

which one is good:

string sQuery = \"SELECT * FROM table\";

or

const string sQuery = \"SELECT * FROM table\";

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Answer 1

It does this because if you accidentally assign a new value to sQuery in your code, if it's a const you'll get a compile error, so it will catch a bug at compile time. Same with its suggestion to make member variables which are set in the ctor only to be readonly