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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 125001 to 126000 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