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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 206001 to 207000 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