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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 172001 to 173000 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