Hi, guys

I've got a problem.

I have a store like below:

            <ext:Store ID="Store2" runat="server" AutoLoad="true" OnRefreshData="Store2_Refresh">
                <Reader>
                    <ext:JsonReader>
                        <Fields>
                            <ext:RecordField Name="Id" Type="Int" />
                            <ext:RecordField Name="Manufacture" />
                            <ext:RecordField Name="PartNo" />
                            <ext:RecordField Name="Quantity" Type="Int" />
                            <ext:RecordField Name="Desc" />
                        </Fields>
                    </ext:JsonReader>
                </Reader>
            </ext:Store>
now I want to convert the data in Store2 to a jason string and then send it to server end as a parameter.

Does anybody know how?