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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 276001 to 277000 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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