c# - Unreachable code detected by using const variables -

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i have following code:

private const flycapture2managed.pixelformat f7pf = flycapture2managed.pixelformat.pixelformatmono16;  public pgrcamera(examform input, bool red, int flags, int drawwidth, int drawheight) {    if (f7pf == flycapture2managed.pixelformat.pixelformatmono8) {       bpp = 8;  // unreachable warning    }    else if (f7pf == flycapture2managed.pixelformat.pixelformatmono16){       bpp = 16;    }    else {       messagebox.show("camera misconfigured");  // unreachable warning    } }

i understand code unreachable, don't want message appear, since it's configuration on compilation needs change in constant test different settings, , bits per pixel (bpp) change depending on pixel format. there way have 1 variable being constant, deriving other it, not resulting in unreachable code warning? note need both values, on start of camera needs configured proper pixel format, , image understanding code needs know how many bits image in.

so, there workaround, or live warning?

you can replace conditional dictionary lookup avoid warning:

private static idictionary<flycapture2managed.pixelformat,int> formattobpp =     new dictionary<flycapture2managed.pixelformat,int> {         {flycapture2managed.pixelformat.pixelformatmono8, 8}     ,   {flycapture2managed.pixelformat.pixelformatmono16, 16}     }; ... int bpp; if (!formattobpp.trygetvalue(f7pf, out bpp)) {     messagebox.show("camera misconfigured"); }

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