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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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