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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 193001 to 194000 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