C#里System.Data.SQLite中对GUID的处理

 string sqlstring = "select * from endpoint_policy where HEX([UserGuid]) ='" + CommonHelper.ConvertGuid(uguid) + "'";
 var query = db.Database.SqlQuery<endpoint_policy>(sqlstring).AsQueryable();
 var endpoint_policy = new PagedList<endpoint_policy>(query.OrderByDescending(c => c.CreatedOnUtc), pageIndex, pageSize);

public static string ConvertGuid(Guid gd)
{
            string sgd = gd.ToString().ToUpper();
            string sVar = "";
            int i;
            foreach (string sv in new string[] { sgd.Substring(, ), sgd.Substring(, ), sgd.Substring(, ) })
            {
                for (i = sv.Length - ; i >= ; i -= )
                {
                    sVar += sv.Substring(i, );
                }
            }
            sgd = sgd.Substring().Replace("-", "");
            for (i = ; i < ; i++)
            {
                sVar += sgd.Substring( * i, );
            }
            return sVar;
 }