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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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