how to convert the html tags to the msg bodg in mail function.

i.e i have

  Company Name: BPL

  Industry Type:  

i have got the string as

datatable dt=new datatable();

string msg= dt.rows[i]["Message"].tostring();

i need to convert this html tags to the exact message;

           if (boolcheck)
            {
                msg.Body = ????????? wat to use over here.... how to remove the html tags and get the exact message

            }

pls help??????????/