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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 36001 to 37000 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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