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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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