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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 171001 to 172000 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