MD5 encryption with the ASP.net class in the

In fact, in asp.net programming, you don't have to call md5.asp to encrypt your data. Classes in dotnet: System.Web.Security.HashPasswordForStoringInConfigFile ()

The following is a quote fragment:
Public string md5(string str, int code)
{
If(code==16) //16-bit MD5 encryption (take 9-25 characters for 32-bit encryption)
{
Return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower().Substring(8,16) ;
}
If(code==32) //32-bit encryption
{
Return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower();
}
Return "00000000000000000000000000000000";
}