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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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