c# - Code is unreachable -


relatively new programming can't work out why if statement unreachable. best way return calculation can send back? 

while (reader.read()) {         if (reader.nodetype == xmlnodetype.element)         {             if (reader.name == "amount")             {                 if ("amount" == "gold" || value > 4999)                 {                     credit = 300;                     discountpercent = .20f;                      }                 else if ("amount" == "silver" || value > 4999)                 {                     discountpercent = .15f;                     }                 else if ("amount" == "regular")                 {                     credit = 200;                    }              }             else if (reader.name == "member")             {                 if ("member" == "gold" || value > 4999)                 {                     credit = 300;                     discountpercent = .20f;                 }                 else if ("member" == "silver" || value > 4999)                 {                     discountpercent = .15f;                 }                 else if ("member" == "regular")                 {                     credit = 200;                 }              }         }     } }

could because i'm not including break statement?

"amount" == "gold" never evaluate true, because strings different. same goes other string comparisons. compiler reduces false out of ||, "sees" following:

if (value > 4999) {     credit = 300;     discountpercent = .20f; } else if (value > 4999) {     discountpercent = .15f; } else if (false) {     credit = 200; }

the compiler reasonably concludes middle , bottom ifs unreachable.

to fix code, read value, , use in comparisons:

if (reader.name == "amount") {     var amount = reader.value;     if (amount == "gold" || value > 4999) {         credit = 300;         discountpercent = .20f;          } else if (amount == "silver" || value > 4999) {         discountpercent = .15f;         } else if (amount == "regular") {         credit = 200;        } }

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