Question

String^ matchStr = "eu";
String^ tempHeader;

for (int i = 0; i < header.size(); i++)
{
    tempHeader = gcnew String(header[i].c_str());
    if (Regex::Match(tempHeader, matchStr, RegexOptions::IgnoreCase))
    {
        index = i;
    }
}

The above is the code I am trying to use for a Regular Expression, but regardless, it enters into the “IF” loop, and sets index = i.

Answer 1

This is because the call returns a Match object, and it is not NULL. You need to check the Success property:

if (Regex::Match(tempHeader, matchStr, RegexOptions::IgnoreCase)->Success)
{
    index = i;
}