c# - get SamAccountName from large AD groups with DirectorySearcher -

i using below approach query members large ad groups.

try {     directoryentry entry = new directoryentry("ldap://cn=my distribution list,ou=distribution lists,dc=fabrikam,dc=com");     directorysearcher searcher = new directorysearcher(entry);     searcher.filter = "(objectclass=*)";      uint rangestep = 1000;     uint rangelow = 0;     uint rangehigh = rangelow + (rangestep - 1);     bool lastquery = false;     bool quitloop = false;          {         string attributewithrange;         if(!lastquery)         {             attributewithrange = string.format("member;range={0}-{1}", rangelow, rangehigh);         }         else         {             attributewithrange = string.format("member;range={0}-*", rangelow);         }                    searcher.propertiestoload.clear();         searcher.propertiestoload.add(attributewithrange);         searchresult results = searcher.findone();         foreach(string res in results.properties.propertynames)         {             system.diagnostics.debug.writeline(res.tostring());         }         if(results.properties.contains(attributewithrange))         {             foreach(object obj in results.properties[attributewithrange])             {                 console.writeline(obj.gettype());                 if(obj.gettype().equals(typeof(system.string)))                 {                 }                 else if (obj.gettype().equals(typeof(system.int32)))                 {                 }                 console.writeline(obj.tostring());             }             if(lastquery)             {                 quitloop = true;             }         }         else         {             lastquery = true;         }         if(!lastquery)         {             rangelow = rangehigh + 1;             rangehigh = rangelow + (rangestep - 1);         }     }     while(!quitloop); } catch(exception ex) {     // handle exception ex. } 

here retrieve samaccountname of members along distinguishedname.also have groups contains cross domain members. please help.

to value of attribute typically need call directoryentry.properties[propertyname].value, e.g.

var x = results.properties["distinguishedname"].value 

for indexed values might required provide index properties[propertyname][x].value

if value not populated default in result, might need force load using directorysearcher.propertiestoload.add(propertyname);