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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 226001 to 227000 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