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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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