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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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