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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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