IO::FileStream^ file; String^ buffer;

try
{
file = gcnew IO::FileStream("test.txt", IO::FileMode::Open);
buffer = gcnew String((gcnew IO::BinaryReader(file))->ReadChars(file->Length));
}

using namespace System;

int main()
{
IO::FileStream^ file; String^ buffer;

try
{
file = gcnew IO::FileStream("test.txt", IO::FileMode::Open);
buffer = gcnew String((gcnew IO::BinaryReader(file))->ReadChars(file->Length));
}

catch(IO::FileNotFoundException^ e) { Console::WriteLine("FNF"); }
catch(IO::IOException^ e) { Console::WriteLine("IOE"); }
catch(Exception^ e) { Console::WriteLine("E"); }

finally { file->Close(); }
}

IO::StreamReader^ stream; String^ buffer;

try
{
stream = gcnew IO::StreamReader("test.txt");
buffer = stream->ReadToEnd();
}

using namespace System;

int main()
{
IO::StreamReader^ stream; String^ buffer;

try
{
stream = gcnew IO::StreamReader("test.txt");
buffer = stream->ReadToEnd();
}

catch(IO::FileNotFoundException^ e) { Console::WriteLine("FNF"); }
catch(IO::IOException^ e) { Console::WriteLine("IOE"); }
catch(Exception^ e) { Console::WriteLine("E"); }

finally { stream->Close(); }
}

String^ buffer = IO::File::ReadAllText("test.txt");

using namespace System;

int main()
{
String^ buffer = IO::File::ReadAllText("test.txt");

Console::Write("{0}", buffer);
}