CString's Find (no case sensitive)

CString TmpUpr_Var1 = Var1;

TmpUpr_Var1.MakeUpper();

if(TmpUpr_Var1.Find(Sub)!=-1)
{
    MessageBox("Found");
}

https://www.experts-exchange.com/questions/21287809/CString's-Find-no-case-sensitive.html