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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 194001 to 195000 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