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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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