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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
2	Sales Associate	Paul Henriot	Argentina	1 2 3 4 5
3	Accountant	Hanna Moos	Spain	1 2 3 4 5
4	Sales Agent	Pascale Cartrain	Brazil	1 2 3 4 5
5	Sales Agent	Howard Snyder	Brazil	1 2 3 4 5
6	Marketing Assistant	Patricio Simpson	England	1 2 3 4 5
7	Sales Agent	Howard Snyder	England	1 2 3 4 5
8	Sales Representative	Antonio Moreno	Argentina	1 2 3 4 5
9	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
10	Owner	Hanna Moos	Spain	1 2 3 4 5
11	Accountant	Hanna Moos	Bulgaria	1 2 3 4 5
12	Accounting Manager	Antonio Moreno	France	1 2 3 4 5
13	Owner	Jaime Yorres	USA	1 2 3 4 5
14	Owner	Jaime Yorres	Argentina	1 2 3 4 5
15	Accountant	Paul Henriot	Argentina	1 2 3 4 5
16	Accountant	Pascale Cartrain	Bulgaria	1 2 3 4 5
17	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
18	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
19	Sales Consultant	Hanna Moos	Spain	1 2 3 4 5
20	Sales Consultant	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
21	Owner	Georg Pipps	Brazil	1 2 3 4 5
22	Sales Associate	Hanna Moos	France	1 2 3 4 5
23	Sales Associate	Paul Henriot	Germany	1 2 3 4 5
24	Accountant	Hanna Moos	Brazil	1 2 3 4 5
25	Sales Associate	Matti Karttunen	France	1 2 3 4 5
26	Accountant	Pascale Cartrain	England	1 2 3 4 5
27	Sales Agent	Pascale Cartrain	Argentina	1 2 3 4 5
28	Accounting Manager	Georg Pipps	England	1 2 3 4 5
29	Accountant	Howard Snyder	England	1 2 3 4 5
30	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
31	Sales Manager	Howard Snyder	Spain	1 2 3 4 5
32	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
33	Sales Manager	Matti Karttunen	Germany	1 2 3 4 5
34	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
35	Sales Associate	Elizabeth Lincoln	France	1 2 3 4 5
36	Sales Representative	Howard Snyder	Brazil	1 2 3 4 5
37	Sales Consultant	Matti Karttunen	Brazil	1 2 3 4 5
38	Marketing Assistant	Hanna Moos	Argentina	1 2 3 4 5
39	Owner	Paul Henriot	Bulgaria	1 2 3 4 5
40	Accountant	Matti Karttunen	England	1 2 3 4 5
41	Accountant	Pascale Cartrain	Spain	1 2 3 4 5
42	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
43	Sales Agent	Georg Pipps	Brazil	1 2 3 4 5
44	Accounting Manager	Hanna Moos	Bulgaria	1 2 3 4 5
45	Sales Associate	Jaime Yorres	Bulgaria	1 2 3 4 5
46	Sales Consultant	Pascale Cartrain	Spain	1 2 3 4 5
47	Sales Agent	Antonio Moreno	France	1 2 3 4 5
48	Accountant	Paul Henriot	England	1 2 3 4 5
49	Accountant	Jaime Yorres	USA	1 2 3 4 5
50	Owner	Pascale Cartrain	USA	1 2 3 4 5
51	Accountant	Patricio Simpson	Italy	1 2 3 4 5
52	Sales Agent	Pascale Cartrain	USA	1 2 3 4 5
53	Sales Manager	Pascale Cartrain	France	1 2 3 4 5
54	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
55	Sales Manager	Paul Henriot	France	1 2 3 4 5
56	Sales Associate	Georg Pipps	Argentina	1 2 3 4 5
57	Accountant	Paul Henriot	Brazil	1 2 3 4 5
58	Accounting Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
59	Accounting Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
60	Accounting Manager	Antonio Moreno	USA	1 2 3 4 5
61	Owner	Hanna Moos	Argentina	1 2 3 4 5
62	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
63	Sales Consultant	Paul Henriot	Spain	1 2 3 4 5
64	Accounting Manager	Hanna Moos	Austria	1 2 3 4 5
65	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
66	Accountant	Elizabeth Lincoln	Austria	1 2 3 4 5
67	Sales Agent	Howard Snyder	Spain	1 2 3 4 5
68	Sales Consultant	Patricio Simpson	Spain	1 2 3 4 5
69	Accounting Manager	Jaime Yorres	Austria	1 2 3 4 5
70	Marketing Manager	Jaime Yorres	Italy	1 2 3 4 5
71	Accountant	Matti Karttunen	France	1 2 3 4 5
72	Sales Consultant	Pascale Cartrain	Brazil	1 2 3 4 5
73	Accountant	Jaime Yorres	England	1 2 3 4 5
74	Marketing Assistant	Elizabeth Lincoln	USA	1 2 3 4 5
75	Accountant	Patricio Simpson	Argentina	1 2 3 4 5
76	Sales Representative	Georg Pipps	Spain	1 2 3 4 5
77	Accountant	Patricio Simpson	Germany	1 2 3 4 5
78	Sales Manager	Paul Henriot	USA	1 2 3 4 5
79	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
80	Marketing Manager	Matti Karttunen	Austria	1 2 3 4 5
81	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
82	Marketing Assistant	Paul Henriot	Austria	1 2 3 4 5
83	Sales Agent	Jaime Yorres	France	1 2 3 4 5
84	Accountant	Jaime Yorres	Brazil	1 2 3 4 5
85	Accountant	Georg Pipps	England	1 2 3 4 5
86	Marketing Assistant	Elizabeth Lincoln	Argentina	1 2 3 4 5
87	Accountant	Antonio Moreno	Spain	1 2 3 4 5
88	Sales Representative	Howard Snyder	Germany	1 2 3 4 5
89	Accountant	Howard Snyder	Argentina	1 2 3 4 5
90	Sales Manager	Howard Snyder	France	1 2 3 4 5
91	Accounting Manager	Matti Karttunen	Germany	1 2 3 4 5
92	Accountant	Elizabeth Lincoln	Austria	1 2 3 4 5
93	Marketing Assistant	Patricio Simpson	Bulgaria	1 2 3 4 5
94	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
95	Accountant	Patricio Simpson	France	1 2 3 4 5
96	Marketing Manager	Pascale Cartrain	Brazil	1 2 3 4 5
97	Marketing Manager	Hanna Moos	Brazil	1 2 3 4 5
98	Sales Associate	Jaime Yorres	Brazil	1 2 3 4 5
99	Sales Associate	Pascale Cartrain	Bulgaria	1 2 3 4 5
100	Owner	Elizabeth Lincoln	Bulgaria	1 2 3 4 5


...171 172 173 174 175 176 177 178 179 180 ... Item 173001 to 174000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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