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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 127001 to 128000 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