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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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