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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 193001 to 194000 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