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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 162001 to 163000 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