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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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