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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 of 300000 Page: of 300 GoPage size:

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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>

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