CODEWITHSUNDEEP
c++-cli
Yaron Cohen Minz
Yaron Cohen Minz

Reputation: 137

Error on !String.IsNullOrEmpty(s))

This is the code in c++

List<String^> ^GetCodecs()
{
    List<String^> ^l = gcnew List<String^>;

    String ^s = gcnew String(Encoder_GetFirstCodecName());
    while (!String.IsNullOrEmpty(s))
    {
        l->Add(s);
        s = gcnew String(Encoder_GetNextCodecName());
    }

    return l;
 }

The error is on the line:

while (!String.IsNullOrEmpty(s))

On the String

The error/s are all about the String:

This is a warning:

Warning 1   warning C4832: token '.' is illegal after UDT 'System::String'

The errors:

Error   2   error C2275: 'System::String' : illegal use of this type as an expression
Error   3   error C2228: left of '.IsNullOrEmpty' must have class/struct/union
Error   4   error C1903: unable to recover from previous error(s); stopping compilation
Error   5   IntelliSense: type name is not allowed

How can I fix them ?

Upvotes: 0

Views: 1498

Answers (1)

Alex
Alex

Reputation: 7858

Since IsNullOrEmpty is a static function, you'd probably have to call it using the :: operator:

while (!String::IsNullOrEmpty(s))

Upvotes: 4

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