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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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