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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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