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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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