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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 183001 to 184000 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