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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 68001 to 69000 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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