CODEWITHSUNDEEP
c#managed-c++
Ashish Kasma
Ashish Kasma

Reputation: 3652

Equivalent to C# null in managed c++

i have one Managed C++ object 

bool Test::TestStringNumber(String^ testData)
{
   int len = testData->Length;
   if(len > 0) return true;
}

am using same function in C#

void Main()
{
    Test t = new Test()
    t.TestStringNumber(null);
}

but application crash. during debugging i observed in C++ it comes as 'undefined value'

ALso i tried to test testData with nullptr in c++ code, and used following code, but still same crash

if( testData == nullptr && String::IsNullOrEmpty( testData ))

*One way is to catch exception in C++ managed code and return ;

Upvotes: 1

Views: 4872

Answers (1)

Cine
Cine

Reputation: 4402

bool Test::TestStringNumber(String^ testData)
{
  return !String::IsNullOrEmpty( testData );
}

Should work just fine? Not that I see the point in your code?

Upvotes: 6

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