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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 182001 to 183000 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