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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 169001 to 170000 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