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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 189001 to 190000 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