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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 133001 to 134000 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