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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 221001 to 222000 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