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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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