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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 147001 to 148000 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