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

If the string never changes and is never used outside your assembly, then const is a good idea. If it never changes but is used outside your assembly, static readonly might be a better idea -- consts are "burned in" at the site of the call, not stored in one location, so recompiling the assembly that contains the const does not update the dependent assemblies -- they have to be recompiled too. static readonly variables on the other hand do get updated in dependent assemblies.