problem with Toolbar Paging Extjs 4&Json - json

Question

I'm using ExtJS4 to develop some rich interfaces. I'm a beginner with ExtJS and I i have some problems. I have 100 records and I want to show 20 records per page. I have done this code, but its only showing 20 recording in all pages. I have verified in firebug if I have all my data: I have only 20 and my Total is equal to 100. I need help please.
Webservice page:
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[ScriptService]
public class Service : System.Web.Services.WebService
{
public class DataGridSource
{
public List<MyDvpt> maListe = new List<MyDvpt>();
private int _total;
public int Total
{
get { return _total; }
set { _total = value; }
}
}
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json, UseHttpGet = true, XmlSerializeString = false)]
public DataGridSource GetMyDvpt3(int pageSize, int pageNumber)
{
string connectionString = "Data source=DARWIN;Initial Catalog=AGREO_DVPT;User ID=temp;Password=pmet";
SqlConnection connection = new SqlConnection(connectionString);
SqlCommand command = new SqlCommand("SELECT TOP 100 E.NOM_EXP,ESP.NOM_ESP,V.NOM_VAR,P.SURF_PG,P.DD_CYCLE_PROD from gc.PG P inner join ADM.EXP E on E.ID_EXP = P.ID_EXP inner join GC.VAR V on V.ID_VAR = P.ID_VAR inner join GC.ESP ESP on ESP.ID_ESP = V.ID_ESP", connection);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
List<MyDvpt> list1 = new List<MyDvpt>();
while (reader.Read())
{
MyDvpt dev = new MyDvpt();
dev.NOM_EXP = reader[0].ToString();
dev.NOM_ESP = reader[1].ToString();
dev.NOM_VAR = reader[2].ToString();
dev.SURF_PG = reader[3].ToString();
dev.DD_CYCLE_PROD = reader[4].ToString();
list1.Add(dev);
}
return new DataGridSource { maListe = list1.Skip(pageSize * pageNumber).Take(pageSize).ToList<MyDvpt>(), Total = list1.Count };
}
public class MyDvpt
{
public string NOM_EXP { get; set; }
public string NOM_ESP { get; set; }
public string NOM_VAR { get; set; }
public string SURF_PG { get; set; }
public string DD_CYCLE_PROD { get; set; }
private string _total;
public string Total
{
get { return _total; }
set { _total = value; }
}
}
}
JS page:
function onReady() {
store = new Ext.data.JsonStore({
autoLoad: true,
pageSize: 20,
pageNumber: 1,
groupField: 'NOM_VAR',
proxy: ({
type: 'ajax',
url: '../Service.asmx/GetMyDvpt3?pageSize=20 &pageNumber=1',
reader: {
type: 'json',
root: 'd.maListe',
totalProperty: 'd.Total'
},
headers: {
'Content-type': 'application/json'
}
}),
fields: ['NOM_EXP', 'NOM_ESP', 'NOM_VAR', 'SURF_PG', 'DD_CYCLE_PROD']
});
store.loadPage(1);
var groupingFeature = Ext.create('Ext.grid.feature.Grouping', {
groupHeaderTpl: 'NOM_VAR: {NOM_ESP} ({rows.length} enregistrement{[values.rows.length > 1 ? "s" : ""]})'
});
Ext.create('Ext.grid.Panel', {
store: store,
id:'grid',
collapsible: true,
frame: true,
iconCls: 'icon-grid',
features: [groupingFeature],
columnLines: true,
columns: [
{ dataIndex: 'NOM_EXP', header: 'NOM_EXP', flex: 1 },
{ dataIndex: 'NOM_ESP', header: 'NOM_ESP', flex: 1 },
{ dataIndex: 'NOM_VAR', header: 'NOM_VAR', flex: 1 },
{ dataIndex: 'SURF_PG', header: 'SURF_PG', flex: 1 },
{ dataIndex: 'DD_CYCLE_PROD', header: 'DD_CYCLE_PROD', flex: 1 }
],
fbar: ['->', {
text: 'Clear Grouping',
iconCls: 'icon-clear-group',
handler: function () {
groupingFeature.disable();
}
}],
renderTo: 'panel',
viewConfig: {
stripeRows: true
},
title: 'Dvpt Grid',
width: 1220,
height: 500,
dockedItems: [{
xtype: 'pagingtoolbar',
store: store,
dock: 'bottom',
displayInfo: true
}]
});
}
store.load() response in firebug:
GET http://localhost:1508/Service.asmx/GetMyDvpt3?pa...22NOM_VAR%22%2C%22direction%22%3A%22ASC%22%7D%5D
{"d":{"_type":"MaquetteExtJs.Service+DataGridSource","maListe":[{"_type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"AMBRAL","SURF_PG":"30000","DD_CYCLE_PROD":"26/02/2003 00:00:00","Total":null},
...
{"__type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"SOLDUR","SURF_PG":"25000","DD_CYCLE_PROD":"06/03/2002 00:00:00","Total":null}],"Total":"100"}}
d Object { __type="MaquetteExtJs.Service+DataGridSource", maListe=[20], Total="100"}

Answer 1

Currently your response is like this...
{"d":{"_type":"MaquetteExtJs.Service+DataGridSource","maListe":[{"_type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"AMBRAL","SURF_PG":"30000","DD_CYCLE_PROD":"26/02/2003 00:00:00","Total":null}, ... {"__type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"SOLDUR","SURF_PG":"25000","DD_CYCLE_PROD":"06/03/2002 00:00:00","Total":null}],"Total":"100"}}
But it should be like this...
{"_type":"MaquetteExtJs.Service+DataGridSource","maListe":[{"_type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"AMBRAL","SURF_PG":"30000","DD_CYCLE_PROD":"26/02/2003 00:00:00","Total":null}, ... {"__type":"MaquetteExtJs.Service+MyDvpt","NOM_EXP":"DECKERT","NOM_ESP":"Blé Dur Hiver","NOM_VAR":"SOLDUR","SURF_PG":"25000","DD_CYCLE_PROD":"06/03/2002 00:00:00","Total":null}],"Total":"100"}
Also you need to update your JsonReader config in your JsonStore..
proxy: ({
type: 'ajax',
url: '../Service.asmx/GetMyDvpt3?pageSize=20 &pageNumber=1',
reader: {
type: 'json',
root: 'maListe',
totalProperty: 'Total'
}
}),

Answer 2

Try keeping old json response and store root property (root: 'd.maListe') and modify the totalProperty : 'Total'