New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 214001 to 215000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
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>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance