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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 142001 to 143000 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