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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 194001 to 195000 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