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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 174001 to 175000 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