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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 246001 to 247000 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