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


...241 242 243 244 245 246 247 248 249 250 ... Item 246001 to 247000 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