What's the ereg() equivalent [closed]

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What's the PHP ereg() equivalent in Visual Basic .NET?

I'm trying to translate this tripcode encoder from PHP to VB.NET

function tripcode($name)
{
    if(ereg("(#|!)(.*)", $name, $matches))
    {
        $cap  = $matches[2];
        $cap  = strtr($cap,"&", "&");
        $cap  = strtr($cap,",", ",");
        $salt = substr($cap."H.",1,2);
        $salt = ereg_replace("[^\.-z]",".",$salt);
        $salt = strtr($salt,":;<=>?@[\\]^_`","ABCDEFGabcdef"); 
        return "!".substr(crypt($cap,$salt),-10)."";
    }
}

Answer 1

        $Str = "#your_tripcode_password"
        Dim Reg As New Regex("(#|!)(.*)")
        If Reg.IsMatch(Str) Then
            Dim Cap$ = Reg.Matches(Str)(0).Groups(2).Value

        End If