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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 228001 to 229000 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