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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 31001 to 32000 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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