Smrf.NodeXL.ExcelTemplate.AnalyzeEmailNetworkDialog.ValidateFilter C# (CSharp) Method

    ValidateFilter
    (
        String sString
    )
    {
        Debug.Assert(sString != null);
        AssertValid();

        // Windows Desktop Search throws an exception if you pass it nothing
        // but spaces and special characters.  Prevent this.
        //
        // Note: Don't use \w, because that includes the underscore character.
        //
        // TODO: This can't be the correct way to do this.  What if a non-
        // ASCII character set is in use?

        Regex oRegex = new Regex("[a-zA-Z0-9]");

        return ( oRegex.IsMatch(sString) );
    }