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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 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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