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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 223001 to 224000 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