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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 165001 to 166000 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