xml - C# Calling list from Class -


this question has answer here:

i pulling httpwebrequest warranty information. have tested each section information , worked. once put class failed.

my question is, how can call device class ?

    dell computerrequest = new dell(apikey);             xdocument xltest = new xdocument();             xltest = computerrequest.xmlresponse(txttag.text.trim());              xnamespace getassetwarrantya = "http://schemas.datacontract.org/2004/07/dell.awr.domain.asset";             xnamespace getassetwarrantyi = "http://www.w3.org/2001/xmlschema-instance";              list<device> xlasset = (from asset in xltest.descendants(getassetwarrantya + "response")                           select new device()                           {                               deviceinfo = (from defaultinfo in asset.descendants(getassetwarrantya + "dellasset")                                             select new devicebase()                                             {                                                 product = (string)asset.descendants(getassetwarrantya + "machinedescription").firstordefault(),                                                 ordernumber = (string)asset.descendants(getassetwarrantya + "ordernumber").firstordefault(),                                                 servicetag = (string)asset.descendants(getassetwarrantya + "servicetag").firstordefault(),                                                 shipdate = (string)asset.descendants(getassetwarrantya + "shipdate").firstordefault()                                             }).tolist(),                                warrantyinfo = (from warranty in asset.descendants(getassetwarrantya + "warranty")                                                select new warranty()                                                {                                                    service = (string)warranty.descendants(getassetwarrantya + "serviceleveldescription").firstordefault(),                                                    provider = (string)warranty.descendants(getassetwarrantya + "serviceprovider").firstordefault(),                                                    startdate = (string)warranty.descendants(getassetwarrantya + "startdate").firstordefault(),                                                    enddate = (string)warranty.descendants(getassetwarrantya + "enddate").firstordefault(),                                                    typeofwarranty = (string)warranty.descendants(getassetwarrantya + "entitlementtype").firstordefault()                                                }).tolist(),                           }).tolist();    **//fails -- no object set reference**             device testdevice = new device();             messagebox.show(testdevice.warrantyinfo.count.tostring());              dtgrdwar.datasource = xlasset.toarray();                    }          public class device         {             public list<devicebase> deviceinfo{ get; set; }                         public list<warranty> warrantyinfo { get; set; }         }         public class devicebase         {             public string product { get; set; }             public string ordernumber { get; set; }             public string servicetag { get; set; }             public string shipdate { get; set; }          }         public class warranty         {             public string service { get; set; }             public string provider { get; set; }             public string startdate { get; set; }             public string enddate { get; set; }             public string typeofwarranty { get; set; }         }

xml:

<getassetwarrantyresponse xmlns="http://tempuri.org/" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <getassetwarrantyresult xmlns:i="http://www.w3.org/2001/xmlschema-instance" xmlns:a="http://schemas.datacontract.org/2004/07/dell.awr.domain.asset"> <a:faults/> <a:response> <a:dellasset> <a:assetparts i:nil="true"/> <a:countrylookupcode>11</a:countrylookupcode> <a:customernumber>117731304</a:customernumber> <a:isduplicate>false</a:isduplicate> <a:itemclasscode>oc002</a:itemclasscode> <a:localchannel>66</a:localchannel> <a:machinedescription>compellent sc8000,1st,2nd,upg</a:machinedescription> <a:ordernumber>nanananan</a:ordernumber> <a:parentservicetag i:nil="true"/> <a:servicetag>xxxxxxx</a:servicetag> <a:shipdate>2014-02-07t00:00:00</a:shipdate> <a:warranties> <a:warranty> <a:enddate>2016-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>933-5366</a:itemnumber> <a:servicelevelcode>s9</a:servicelevelcode> <a:serviceleveldescription>4 hour on-site service</a:serviceleveldescription> <a:servicelevelgroup>5</a:servicelevelgroup> <a:serviceprovider>uny</a:serviceprovider> <a:startdate>2015-07-31t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2016-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>974-9929</a:itemnumber> <a:servicelevelcode>zl</a:servicelevelcode> <a:serviceleveldescription>cml - storage center core base</a:serviceleveldescription> <a:servicelevelgroup>11</a:servicelevelgroup> <a:serviceprovider>dell</a:serviceprovider> <a:startdate>2015-07-31t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2016-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>933-5406</a:itemnumber> <a:servicelevelcode>sv</a:servicelevelcode> <a:serviceleveldescription>silver premium support</a:serviceleveldescription> <a:servicelevelgroup>8</a:servicelevelgroup> <a:serviceprovider>dell</a:serviceprovider> <a:startdate>2015-07-31t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2015-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>933-5416</a:itemnumber> <a:servicelevelcode>sv</a:servicelevelcode> <a:serviceleveldescription>silver premium support</a:serviceleveldescription> <a:servicelevelgroup>8</a:servicelevelgroup> <a:serviceprovider>dell</a:serviceprovider> <a:startdate>2014-08-01t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2015-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>933-5376</a:itemnumber> <a:servicelevelcode>s9</a:servicelevelcode> <a:serviceleveldescription>4 hour on-site service</a:serviceleveldescription> <a:servicelevelgroup>5</a:servicelevelgroup> <a:serviceprovider>uny</a:serviceprovider> <a:startdate>2014-08-01t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2015-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>975-0042</a:itemnumber> <a:servicelevelcode>zl</a:servicelevelcode> <a:serviceleveldescription>cml - storage center core base</a:serviceleveldescription> <a:servicelevelgroup>11</a:servicelevelgroup> <a:serviceprovider>dell</a:serviceprovider> <a:startdate>2014-08-01t00:00:00</a:startdate></a:warranty> <a:warranty> <a:enddate>2014-07-31t23:59:59</a:enddate> <a:entitlementtype>extended</a:entitlementtype> <a:itemnumber>933-5376</a:itemnumber> <a:servicelevelcode>s9</a:servicelevelcode> <a:serviceleveldescription>4 hour on-site service</a:serviceleveldescription> <a:servicelevelgroup>5</a:servicelevelgroup> <a:serviceprovider>uny</a:serviceprovider> <a:startdate>2014-02-07t00:00:00</a:startdate></a:warranty></a:warranties></a:dellasset></a:response></getassetwarrantyresult></getassetwarrantyresponse>

the issue class being created correctly. here correction curious:

public class device         {             private list<devicebase> _deviceinfo = new list<devicebase>();             private list<warranty> _warrantyinfo = new list<warranty>();              public list<devicebase> deviceinfo             {                                 { return _deviceinfo; }                 set                 { _deviceinfo = value; }             }                         public list<warranty> warrantyinfo             {                                 { return _warrantyinfo; }                 set                 { _warrantyinfo = value; }             }         }          public class devicebase         {             public string product { get; set; }             public string ordernumber { get; set; }             public string servicetag { get; set; }             public string shipdate { get; set; }          }         public class warranty         {             public string service { get; set; }             public string provider { get; set; }             public string startdate { get; set; }             public string enddate { get; set; }             public string typeofwarranty { get; set; }         }

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