Mongodb for C # Group query

#regionSort gets collection static list<bsondocument> Getpagerwithgroup (String connectionString, String databaseName, string collect Ionname, imongoquery param, Groupbybuilder groupbybuilder, PageInfo info, out int pagecount)/// <summary>        ///group Query Get collection/// </summary>        /// <param name= "connectionString" >Database connection String</param>        /// <param name= "DatabaseName" >Database name</param>        /// <param name= "CollectionName" >Collection Name</param>        /// <param name= "param" >conditions</param>        /// <param name= "Groupbybuilder" >Grouping conditions</param>        /// <param name= "info" >Paging Information</param>        /// <param name= "PageCount" >Total Pages</param>        /// <returns>List</returns>         Public StaticList<bsondocument> Getpagerwithgroup (stringConnectionString,stringDatabaseName,stringCollectionName, imongoquery param, Groupbybuilder groupbybuilder, PageInfo info, out intPageCount) {            varCollection = Getmongocollection<bsondocument>(connectionString, DatabaseName, CollectionName); varDictionary =Newdictionary<string,int>(); dictionary["Num"] =0; List<BsonDocument> list =NULL; varQ =collection. Group (param, Groupbybuilder, bsondocument.create (dictionary), Bsonjavascript.create ("function (Doc,prev) {prev.num++;}"), Bsonjavascript.create ("function (doc) {Doc.count=doc.num;delete doc.num;}")); PageCount=0; if(Info = =NULL) {List=q.tolist (); }            Else{List=Q. Skip (info. PageIndex-1) *info. PageSize). Take (info. PageSize).                ToList (); varCount =Q.count (); if(Count <=0) {PageCount=0; return NULL; } PageCount= (int) (count% info.) PageSize = =0? Count/info. PageSize: (Count/info. PageSize) +1); }            returnlist; }        #endregion

Mongodb for C # Group query